|
|
Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 1742 - 010 | |||||
| (Last updated 14.mar.2024) | |||||
Name of Deposit Area : Skiftesmyr |
| (Object Id : 1742,010,00,00) |
| Location |
| County : | Nord-Trøndelag (17) | Municipality : | Grong (1742) |
| Map 1:50000: | Grong (1823-4) | Map 1:250000: | Grong |
| Marking point: | Longitude: | 12.6066880 | Latitude: | 64.4797110 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 384970 m. | Y-coord: | 7152639 m. |
|
|
| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Copper | |
| Element(s): | Cu Zn Kis |
| Production |
| Activity: | Pitting | Reserves: | 4080 thousand tons | |
| Prod. method: | Production: | |||
| Prod. status: | Not yet active | Volume of dump: | 30 m3 | |
| Resource estimat. standard: | CIM/NI 43-101 |
| Importance |
| Public: | National Importance (reg. 25.07.2018) |
| Economical: | Could be significant , (Confirmed 23.nov.2001 by Jan Sverre Sandstad) |
Products |
| Element/product | Crude ore grade or quality | |
| AG | 2.5 ppm | |
| CU | 1.0 % | |
| ZN | 1.5 % |
Operations |
| From - To | Activity | Comments | |
| 1910 - 1912 | Pitting | Company/Institution :Unknown | |
| 1970 - 1970 | Geology | Company/Institution :NGU | |
| 1970 - 1970 | Geochemistry | Company/Institution :NGU | |
| 1970 - 1970 | Geophysics | Company/Institution :NGU | |
| 1973 - 1975 | Geophysics | Company/Institution :NGU | |
| 1973 - 1975 | Core drilling | Company/Institution :Grong Gruber A/S | |
| 1974 - 1974 | Geology | Company/Institution :Grong Gruber A/S | |
| 1978 - 1979 | Core drilling | Company/Institution :Grong Gruber A/S | |
| 1990 - 1991 | Sampling | Company/Institution :NTH/NGU | |
| 1990 - 1993 | Core drilling | Company/Institution :Norsulfid A/S | |
| 1991 - 1992 | Geophysics | Company/Institution :Norsulfid A/S | |
| 1991 - 1992 | Geology | Company/Institution :Norsulfid A/S | |
| 1996 - 1996 | Geochemistry | Company/Institution :Geologiske Tjenester A/S | |
| 1996 - 1996 | Geology | Company/Institution :Geologiske Tjenester A/S | |
| 1996 - 1996 | Sampling | Company/Institution :NGU |
Mineralization |
| Era: | Paleozoic | Period: | Ordovician | |
| Dating: | Method: | |||
| Genesis: | Volcex | Form: | Plate | |
| Main texture: | Banded | Min. distribution: | Massive (>50 % ore minerals) |
| Main grain size: | Medium grained (1-3 mm) | Main alteration: | Chloritisation |
| Strike/Dip: | 230 / 80 | Direction: | 310 | |
| Plunge: | 60 |
| Stratigraphic classification of host rock |
| Era: | Paleozoic | Period: | Ordovician |
| Province: | Caledonides | |
| Geotec.unit: | Køli Nappe Complex | |
| Tectonic complex: | Gjersvik Nappe | |
| Igneous complex: | Skorovass Complex |
| Group: | Gjersvik | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Calcite | Major mineral (>10%) | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Chlorite | Subordinate mineral (1-10%) | |
| Gangue mineral | Sericite | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrite | Major mineral (>10%) | |
| Ore mineral | Pyrrhotite | Subordinate mineral (1-10%) | |
| Ore mineral | Chalcopyrite | Subordinate mineral (1-10%) | |
| Ore mineral | Sphalerite | Subordinate mineral (1-10%) | |
| Ore mineral | Magnetite | Subordinate mineral (1-10%) | |
| Ore mineral | Galena | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Wall rock | Greenstone | Extrusive Original rock :Basalt |
|
| Metamorphic facies :Greenschist | |||
| Wall rock | Magnetite bearing quartzite | Sedimentary Original rock :Exhalite |
|
| Metamorphic facies :Greenschist | |||
| Wall rock | Quartz-sericite(-albite) rock | Extrusive Original rock :Basalt |
|
| Metamorphic facies :Greenschist | |||
| Wall rock | Keratophyre | Extrusive Original rock :Rhyodacite |
|
| Metamorphic facies :Greenschist |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Wall rock | Crenulation cleavage | Strike/Dip :20 / 60 | Post-mineralisation ;...Effect :Modifies | |
| Wall rock | Fold axis | Dir./Plunge :310 / 60 | Post-mineralisation ;...Effect :Modifies | |
| Wall rock | Mineral lineation | Dir./Plunge :310 / 60 | Post-mineralisation ;...Effect :Modifies |
Information(s) in free text format |
| Abstract |
| Massive sulphides at Skiftesmyr consists mainly of pyritic Zn-Cu ore which occurs as layers or a continuous series of ore lenses forming a 2–20 m thick, plate-like orebody overlain by lenses of magnetite-bearing metachert. The main gangue minerals are quartz, chlorite and calcite. Both foot-wall and hanging-wall rocks are strongly affected by quartz-sericitic, albitic or chloritic alteration with variable amounts of sulphide veins and dissemination. The orebody shows a marked lateral zonation, with Cu-dominated ore concentrated to the eastern and upper levels of the orebody and Zn-rich ore to the western parts and at depth. Skiftesmyr holds a NI 43-101 compliant indicated resource of 3.51 Mt @ 1.0% Cu, 1.5% Zn, 0.1 g/t Au and 2.5 g/t Ag at a 0.5% lower block Cu cut-off and a inferred resource of 0.57 Mt @ 1% Cu, 1.6% Zn, 0.1 g/t Au and 2.7 g/t Ag at the same lower block Cu cut-off of 0.5% (METPRO 2013). |
| Free text |
| The Skiftesmyr deposit occur in the Møklevatnet area at the SW corner of the Grong District, c. 20-30 km east of the Grong community centre. The Skiftesmyr deposit occurs at roughly the same stratigraphic level as the Skorovass and Gjersvik deposits to the north. These two deposits are overlain by a pronounced layer of felsic volcanites. The Skiftesmyr deposit occurs in a slightly different environment and is overlain by a thicker sequence of mixed felsic/mafic tuffs and/or volcaniclastics which grades upwards into more mafic dominated tuffs and massive to pillowed lava flows. These rocks are metamorphosed under upper greenschist to lower amphibolite facies conditions. Regionally, the rocks show varying degrees of shearing being for the most part moderately foliated, and in some areas volcanic structures and textures are preserved. On approaching the massive ore zone, however, the country rocks become extremly sheared. The orebody The orebody at Skiftesmyr consists mainly of Zn-Cu rich massive pyritic ore that occurs as thin layers or as a continuous series of ore lenses forming a relatively thin, plate-like orebody. The thickness of the ore zone is typically 4-6m, but varies between 2-20m. The massive ore contains many fragments of country rock near its contact with the host rock, especially within the upper and eastern parts of the orebody. These fragments appear to be remnants of fold hinges that have been ripped apart and now occur as loose fragments, floating within the strongly sheared orebody. The orebody consists dominantly of massive sulphide layers and lenses enclosed within a quartz-sericite, albite and chlorite rich schistose country rocks that contain variable quantities of disseminated and veined sulphides, dominantly pyrite. Minor quantities of chalcopyrite (cpy) and sphalerite (sl) are also present within these altered and sheared rocks, cpy being mostly confined to the darker chlorite rich rocks and sl in the pale, quartz-sericite and albite rich rocks. The massive ore is dominantly pyritic with varying subordinate quantities of cpy and sl and minor amounts of pyrrhotite (po). The Ag and Au mineralogy at Skiftesmyr has to date not been studied and the distribution of these precious metals within the orebody is little known because of the sparse amount of analytical data presently available. The main gangue minerals are quartz, chlorite and calcite. Copper and zinc show a clear zonal distribution within the massive pyrite orebody. The Cu rich ore dominates within the eastern and upper levels of the orebody and Zn rich ore is consentrated in the western part and at depth in the orebody. The deposit is open at depth and towards the west, where the orebody also becomes distinctly thinner. The massive pyritic ore at Skiftesmyr is a compact, homogeneous ore type of medium-grained size, generally in the range of 1-5mm. Although no detailed mineralogical study has been done here, the individual pyrite grains appear to be granular in nature having well developed grain boundaries and are relatively clean with few sulphide inclusions. Chalcopyrite and sphalerite usually form grains at the boundaries between the larger pyrite grains. Pyrrhotite occurs only as a minor constituent within the massive ore and is found mainly along shear planes and late fractures that cut across the pyrite grain boundaries. Thus, mineral separation of the Skiftesmyr ore should give relatively clean products and should not cause great problems. Host rocks The massive orebody is enclosed in intensely altered rocks that adjacent to the orebody are strongly sheared and schistose. On the south side of the orebody, the footwall rocks are dominated by pale coloured, quartz-sericite and albite rich rock carrying large quantities of disseminated pyrite and quartz-pyrite veins. These grade into darker, chlorite rich rocks that contain minor quantities of pyrrhotite. The altered rocks are arranged in a zonal pattern around the orebody. Quartz-sericite rich rocks occur adjacent to the orebody and grade outwards away from the massive orebody into albite- and chlorite-rick rocks. Further into the footwall, the chlorite-rich rocks grade into more normal chloritic greenstones rich in epidote and carbonate and with minor disseminations of po and py. Volcanic structures such as pillows are present in these rocks. Near the surface, within the immediate hanging wall to the orebody, the country rocks are visibly paler in colour, harder and are richer in quartz-albite with less quartz-sericite and chlorite. Deeper within the orebody, along the hanging wall, the rocks are more schistose and become richer in quartz-sericite and chlorite. Along the western edges of the Storedalen valley, to the NE of the main showing, pale coloured quartz-sericite and albite rich rocks occur that contain zones rich in pyrite disseminations and quartz-pyrite veining surrounded by darker chlorite rich rocks with only minor pyrite. These intensly altered and strongly sulphide impregnated rocks are thought to represent the feeder zone to the massive sulphide ores at Skiftesmyr. This N-NE trending zone of strong pyrite disseminated rocks corresponds with a strong EM anomaly found in the overburden covered lowland area to the N of the main showing. This anomaly can be traced for several km to the NE. North of the surface expression to the massive ore horizons, the hanging wall rocks to the orebody consists of a of sequence of variably layered, massive felsic volcanites and/or intrusive sills (?) that are interlayered with fine-laminated felsic to mafic tuffs or tuffites? Some of these felsic layers show clearly turbiditic/ volcaniclastic textures (fine- to coarse-grained beds) and soft sediment slumping folds are observed. The quartz and albite rich felsic layers are generally variably magnetic in nature. Some extremely magnetic layers have been observed in drill core. The high magnetite contents in certain quartz rich layers may be derived from reworking of earlier magnetite bearing felsic volcanic rocks. This layered felsic tuff/ volcaniclastic sequense grades upwards into mafic dominated tuffs with minor felsic layers, which in turn grades stratigraphically upwards into a mafic massive and pillowed flow sequence. The layered felsic-mafic tuffite/volcaniclastic and overlying mafic lava unit that lies to the north of the orezone is interpreted to be younger than the massive sulphide mineralization and associated altered hanging wall and footwall mafic volcanic rocks that host the massive orebody at Skiftesmyr. On surface, near the main showing, massive sulphide ore is in contact with irregular lenses (overlain by), bands and fragments of magnetite bearing quartzites (recrystallized chert), which are interpreted as silica rich exhalites. Magnetite-bearing chert, with minor amounts of po and py, occur as layers and lenses of varying thickness and extent, at the contact between the two main rock units at Skiftesmyr. In simplest terms, the altered mafic volcanic complex forms the stratigraphic footwall and the mixed felsic/mafic tuff-volcaniclastic complex forms the hanging wall to the massive orebody. Late, feldspar-phyric felsic and pale green gabbroid dykes are found cutting the ore zone and the overlying tuff/volcaniclastic complex. Structures The orebody occurs partially within a major shear zone. The massive pyritic ore, containing numerous fragments of folded country rocks, occurs as parallel ore layers and lenses within what appears to be a major shear zone along the hanging wall side, throughout the whole length of the orebody. This is well demonstrated in most vertical sections. The shear zone appears to be an early structure and the ore zone plunges steeply to the NW within this structure. The distribution of Cu- and Zn-rich zones within the orebody and the ore thickness also appears to plunge in a NW direction, suggesting that they also may be related to later folding and shearing deformation. The surface geological map over Skiftesmyr shows that the area has been folded into a major open flexure. The rocks to the NE and E of the main showing trend to the north and dip steeply to the west and rocks within the ore zone and to the west, trend roughly E-W and dip steeply (60-65°) to the north. This is a late crenulation type fold having NE steeply plunging fold axes. Ore reserves and production plans The earliest ore reserve calculation quoted for the Skiftesmyr deposit was carried out in 1977 by Grong Gruber A/S and gave a geological ore reserve of 3.5M tonnes grading 1.16% Cu and 1.79% Zn (Grong Gruber A/S company files). Later drilling has not changed to any degree this figure from 1977. In 1992, Norsulfid A/S presented an ore reserve calculations for the Skiftesmyr deposit which included all drilling done on the deposit up to 1992 ( Norsulfid A/S company report to the Mining Commission, BV 2882). Plans for both underground and an open pit mining was also presented in 1992 (Norsulfid A/S company report to the Mining Commission, BV 2883 and 2885): 1) cut-off 1% Cu equivalent: total 2 746 470 tonnes grading 1.23% Cu, 1.86% Zn, 11.37 ppm Ag, 0.35 ppm Au and 37.52% S. The calculated ore zone has a strike length of 400m and a vertical length of 400m. The thickness of the ore zone varies between 2-21m. 2) cut-off 2% Cu equivalent: total 1 759 417 tonnes grading 1.38% Cu, 2.13% Zn, 12.99 ppm Ag and 0.37 ppm Au. 3) According to underground mining plans reported in 1992 by Norsulfid A/S (report BV 2883), a total of 2 684 000 tonnes of ore was planned to be taken out (cut off 1% Cu equivalents), grading 1.08% Cu, 1.63% Zn, 8.65 ppm Ag, 0.31 ppm Au and 34.6% S. The reduced tonnage and grades quoted here results from ore being tied up in pillars and from waste rock dilution. History The original discovery was made around the turn of the century about the same time as the rest of the discoveries in the Grong district. Early activities in the area (1910-12) included trenching and sampling of the Main (Hoved), Middle (Midtre), Western (Vestre) and Southwest showing along the main ore zone at Skiftesmyr, and on the three showings referred to as the Stordalen showings (Stordalen vest, Stordalen øst and Stordalen nord, respectively). The first mention of the Skiftesmyr showings in the literature dates back to Henriksen (1914) and Bryn (1917). Modern exploration started first in 1970 and continued until present in two periods of increased activity, 1970-79 by Grong Gruber A/S and 1991-93 by Norsulfid A/S. Norwegian Gold Exploration (Braddick Resources, Toronto, Canada) took over the claims to the Skiftesmyr deposit in 1996 and did some limited exploration in the area which included a large soil sampling survey (analysed for Cu, Zn, Ag, Au and As) over the Skiftesmyr and Stordalen showings. Braddick Resources is currently doing a feasibility survey (1996) of the Skiftesmyr and Godejord deposits to see if it is possible to start production on these two deposits simultaneously. Godejord is situated approximately 3-4 km to the south-west of Skiftesmyr. Geology: The following geological mapping has been done on the Skiftesmyr deposit. 1) K. Langley mapped the surface exposures at Skiftesmyr for Grong Gruber A/S in 1974 (outcrop rock type map, with little geological interpretation). 2) M. Heim (1993) regional map and interpretation of the southwest Grong District, including detailed regional interpretation over the Skiftesmyr area. Mapped was done for NGU on a contract from Norsulfid A/S. 3) Detailed surface geological map (Reinsbakken 1991-92) and interpretation of the drill-hole data in eight N-S vertical sections for construction of a 3-D model of the Skiftesmyr deposit (Reinsbakken, 1992) for Norsulfid A/S in connection with ore reserve calculation by Norsulfid in 1992 (Lideman, 1992) and for a feasibility study in 1996 done for Geologiske Tjenester A/S, Oslo, by Braddick Resources, Toronto, Canada. Geophysics: 1) TURAM EM measurements over the Skiftesmyr showings done in 1973-74 for Grong Gruber A/S by NGU (Sakshaug, 1974, 1975 and 1977). TURAM-EM measurements in 1991 over the eastern part of Skiftesmyr, the Stordalen and to the area east of Stordalen for Norsulfid A/S by H. Elvebakk, PTS-NTH. 2) IP (Eidsvik, 1975) and CP (Eidsvik, 1975 and Kihle, 1976 and 1978) measurements done on the Skiftesmyr and Stordalen north showings for Grong Gruber A/S and in 1991 on some drill holes along western Stordalen (Elvebakk, 1991) for NorsulfidA/S. 3) Modern helicopter measurements (mag., EM, VLF and radiometrics) were flown over the area, on E-W 200m line spacings, by NGU in 1990 (Rønning, Kihle, Blokkum and Håbrekke, 1990) and again in 1995 on N-S lines (Smethhurst and Skilbrei, 1992). 4) In 1992, Outokumpu OY, Finland did a detailed, digital Slingram-EM and mag. survey over the Skiftesmyr deposit and a CP survey on the most central diamonnd drill holes for Norsulfid A/S. The results are presented in company reports to the mining ministry commission, BV report 3977. Geochemistry: The showings were sampled and analysed for major and trace elements (AAS and wet chemical methods) during reconnaissance studies of object 48, 49 and 50 under early Grong Project (Logn, 1973). H. Karlstrøm (1990 and 1991) analysed the Skiftesmyr and Storedalen showings for 34 elements, including precious and ore metals using ICP and fire assay methods. Soil survey was carried out in 1996 (Geologiske Tjenester A/S) over Skiftesmyr and Stordalen and Stordalen East areas. Mineral Dressing: In 1977, on contract to Grong Gruber A/S, O. Eidsmo carried out an ore mineral flotation test and T. Malvik fine-grinding oremineral liberation tests of ore samples from drill hole material central to the orebody at Skiftesmyr. Diamond Drilling: Exploration diamond drilling started in 1973 by Grong Gruber A/S at Skiftesmyr and western Stordalen continued until 1979, in two periods 1973-75 and 1978-79. Norsulfid continued drilling in period 1990-93 to extend minable tonnage of deposit. 1) Grong Gruber A/S, in period 1973-79 drilled 22 holes ( = 4794m) on the Skiftesmyr orebody, including 4 holes (= 569m) on West Stordalen disseminated zone. 2) Norsulfid A/S, 1990-93, Skiftesmyr and West Stordalen zone, 38 holes (= 6807m), including 6 holes (= 1355m) drilled on Stordalen disseminated mineralization zone. Main showing (Hovedskjerp) Consists of a 12 m long, N-S trending trench which runs roughly perpendicular to geological trend in rocks. The rocks are strongly foliated to SSW and dips steeply to the NW (ca. 230°/80°). The trench was re-excavated, mapped and sampled in 1996. A 5m wide massive to semi-massive and disseminated ore zone crosses the trench is in sharp contact to a dark, magnetite-bearing quartzite (recrystallized chert) to the south and a pale coloured quartz-albite-sericite rich rock, interpreted as a hydrothermally altered felsic volcanite, to the north. The ore zone is divided into two parts, a 3 m section on the south, consisting mainly of a dark chlorite and quartz rich rock that is strongly disseminated with chalcopyrite (cp) and pyrrhotite (po). Much of this Cu rich mineralisation consists of patches and veins of remobilized cp and po. The north side of the ore zone consists of ca. 2m of medium- to coarse-grained massive pyrite with minor bands and patches of sphalerite (sl). Quartz and albite rich fragments and folded country rocks are common, found floating within the massive pyritic ore layer. The ore zone in this location is not representative of the orebody as a whole compared to what is registered in the drill holes. |
Bibliography: |
| From NGU's Reference Archive: |
| Henriksen, G. , 1914 |
| Befaring av ertsforekomster mellom Sanddøla og Møklevann i Grong. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 3034;3 pages |
| Abstract: | |
| Flere skjerp mellom Sandøla og Møklevann. Generellt innholder mineraliseringene for lite kobber eller for mye magnetkis i svovelkisrike knopper. Følgende gruver og skjerp er besøkt. Damhaugen, Skiftesmyren, mutning no. 183, Rossetplass ved Myklevann, Godejordskjerpet og Finbuforekomsten. Videre arbeider anbefales ved enkelte av disse. |
| Bryn, E. (Myklevann) , 1917 |
| Rapport over: Myklevannsfeltet befart 5 og 6 juli 1917. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;Bergarkivet; No.BA 2211;3 pages |
| Abstract: | |
| Rapporten er en befaringsrapport og kommenterer kort de forskjellige forekomster. Det konkluderes med at feltet kan ha sine muligheter men at disse er små. |
| Oftedahl, Christoffer , 1958 |
| Oversikt over Grongfeltets skjerp og malmforekomster. |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.202;1-75 + fo pages |
| Abstract: | |
| Ore occurences of the Grong area: In the period 1910-1918 a great number of ore occurences were discovered in the Grong area. The late state geologist Steinar Foslie mapped the area in the years 1922-1931. Foslie also mapped all claims and occurences and made special field investigations in a few cases. This book presents a survey of all occurences chiefly based on the field observations of Foslie. In addition the present author has done some field work in connection with the three large deposits, Joma, Skorovass, and Gjersvik. The map, Plate 1, shows the areal geology and the location of the occurrences, numbered from 1 to 131. the ore of the occurrences is chiefly pyrite. The larger occurrences also contain some chalcopyrite and sphalerite etc. and the smaller occurrences contain ither pure pyrite with some magnetite. The Joma deposit (No. 1), contains about 15.5 mill. tons of ore. The ore zone forms an arc and is situated within a thick series of greenstones (Fig. 1). The Skorovass mine (No. 2), contains about 7,5 mill. tons of ore. The deposit is situated in a greenstone complex (Fig. 7), and is immediately surrounded by asid tuffs of quartz keratophyric composition (Table 1). |
| Logn, Ø. , 1973 |
| Geologiske, geofysiske og geokjemiske undersøkelser Grongfeltet/Grongprojektet. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.974 |
| Abstract: | |
| Objekt 48: Sandtjern skjerp Objekt 49: Skiftesmyra skjerp Objekt 50: Stordalen-anomaliene |
| Sakshaug, G.F. , 1974 |
| Elektromagnetisk undersøkelse Grongundersøkelsens objekter 48-51 Skiftesmyr - Møkkelvassås Skjerp |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.1190A;15 pages |
| Sakshaug, G.F. , 1975 |
| Elektromagnetisk undersøkelse Grongundersøkelsens objekt 48-51 1. Møkkelvann - Brusvann 2. Skiftesmyr Vest 3. Finnbu |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.1263;15 pages |
| Eidsvig, Per , 1975 |
| Ip- og CP-målinger Godejord og Skiftesmyr. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.1287;13 pages |
| Abstract: | |
| Det er tidligere utført undersøkelser i de to områder og de publikasjoner/rapporter i NGU's arkiv som er aktuelle er listet opp i nærværende rapport. De nye målingene foregikk på vanlig måte og på basis av stikningsnett brukt ved tidligere undersøkelser. Målingene viser at den kjente mineralisering ved Godejord har en utstrekning langs fallet på minst 130 - 150 meter. Ved Skiftesmyr har hovedmalmen en strøklengde på ca. 500 meter og en sannsynlig utstrekning mot dypet på 400 - 500 meter. Ved Skiftesmyr opptrer en rekke andre ledere av betydelige dimmensjoner. |
| Kihle, Ola , 1976 |
| CP-målinger Skiftesmyr, Rosset "grube" og Borvasselvas skjerp. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.1346;18 pages |
| Sakshaug, G.F. , 1977 |
| Revurdering av Turammålinger 1973 Grongundersøkelsens objekter 48-51 Skiftesmyr - Møkkelvassås Skjerp |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.1190B/til;6 pages |
| Kihle, Ola , 1978 |
| CP-målinger, Skiftesmyr, Nord. |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.1599;8 pages |
| Karlstrøm, Harald , 1994 |
| Edelmetaller i kisforekomster i Nord-Trøndelag |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.93.111;58 pages |
| Abstract: | |
| De fleste kjente kismalmer (lagbundne massive sulfider) i Nord-Trøndelag er befart og analysert på edelmetaller og en serie andre elementer for å peke ut eventuelle provinser/subprovinser hvor edelmetaller eller andre økonomiske bestanddeler kan ha stor betydning. De undersøkte provinsene er Stjørdal-Selbu- området, Meråkerfeltet, Levanger-Verdal-Snåsa-området og Grongfeltet. Gull-anrikede kismalmer er påvist i den sydlige delen av Grongfeltet (Godejord- Skiftesmyr-Rosset) og i visse deler av Fundsjøgruppen i det vestlige Meråker- feltet. Deler av det østlige Meråkerfeltet (Lillefjell-Storhusmannsberget) inneholder forekomster med høye basemetall-innhold. |
| Heim, Michael , 1993 |
| Berggrunnsgeologiske undersøkelser i det sørvestlige Grongfeltet (Rosset - Godejord - Skiftesmyr - Finnbu) |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.92.311;36 pages |
| Abstract: | |
| Berggrunnsgeologisk kartlegging er utført i et ca. 60 kvkm stort område sørvest i Grongfeltet, nord for Sanddøldalen. Det meste av området er del av Gjersvikdekket som dannes av flere dekkeflak med varierende intern petrografi og struktur. Dominerende er grønnstenskomplekset med overliggende vulkanoklastiske/sedimentære bergarter samt i hovedsak trondhjemittiske til gabbroide, subvulkanske intrusjoner. De fleste dekkeflak har invertert stratigrafi. Tektoniseringen under dekketransporten var penetra- tiv i de laveste, sørligste delene. I de nordligste delene kuttes eldre struk- turer av flakgrensene. Senkaledonske skjærsoner og forkastninger påvirker og reaktiverer tidligere strukturer i deler av området. En sen- til postkaledonsk forkastning (Sanddøla- Sandnes-Elstad "detachment") skjærer den kaledonske tektonostratigrafien og danner Gjersvikdekkets grense i sør og vest. Rossetforekomsten ligger i amfibolgneiser tilhørende en lavere tektonostrati- grafisk enhet (Skjøtingsdekket?) vestenfor Gjersvikdekket. Skiftesmyrområdet er del av Gjersvikdekkets hovedmasse og er rikt på sulfid- disseminasjoner. De fleste ligger omtrent konkordant i laminerte, basiske, dels andesittiske til dacittiske vulkanitter. Mulige stratabundne sulfider blir påvirket av en tidlig foldefase, mens mulige yngre mineraliseringssoner har dels gjennomsettende karakter. Godejord- og Finnbumineraliseringen har karakter av små, stratabundne forekom- ster i en sterkt og penetrativt deformert og metamorfosert vulkansk/vulkano- sedimentær lagpakke med stedvis rytmisk utvikling i lagrekken. Deler av prosjektområdet bør undersøkes nærmere i et oppfølgingsprogram. |
| References not to be found in NGU's Reference Archive.: |
| Elvebakk, H. 1991: TURAM og CP målinger Stordalen, Skiftesmyr. PTS-NTH rapport |
| Lindeman, E. 1992: Malmberegning av Skiftesmyr og Godejord. Bergvesenet rapport BV2882. |
| Lindeman, E. 1992: Underjordisk drift i Skiftesmyr. Bergvesenet Rapport BV2883 |
| Lindeman, E. 1992: Skiftesmyr dagbrudd vurdering. Bergvesenet Rapport BV2885. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| JS96006 | Dump |
|
||||
| JS96007 | Dump |
|
||||
| JS96008 | Bedrock |
|
||||
| 1055 | Bedrock |
|
||||
| 1056 | Bedrock |
|
||||
| 1057 | Bedrock |
|
||||
| 1058 | Bedrock |
|
||||
| 1059 | Bedrock |
|
||||
| 1060 | Bedrock |
|
||||
| 1061 | Bedrock |
|
| NB! All analyse values are shown at the end of the printout.: |
Name of Locality : Vestre skjerp |
| (Object Id : 1742,010,01,00) |
| Location |
| County : | Nord-Trøndelag (17) | Municipality : | Grong (1742) |
| Map 1:50000: | Grong (1823-4) | Map 1:250000: | Grong |
| Marking point: | Longitude: | 12.6002860 | Latitude: | 64.4796020 |
| EU89-UTM Zone 33 | (Coordinates NOT confirmed) |
| X-coord: | 384661 m. | Y-coord: | 7152639 m. |
|
|
| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Copper | |
| Element(s): | Cu Zn Kis |
| Production |
| Activity: | Pitting | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
Information(s) in free text format |
| Free text |
| Not found in 1996. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||
| 1069 | Bedrock |
|
||
| 1070 | Bedrock |
|
||
| 1071 | Bedrock |
|
||
| 1072 | Bedrock |
|
||
| 1073 | Bedrock |
|
| NB! All analyse values are shown at the end of the printout.: |
Name of Locality : Midtre skjerp |
| (Object Id : 1742,010,02,00) |
| Location |
| County : | Nord-Trøndelag (17) | Municipality : | Grong (1742) |
| Map 1:50000: | Grong (1823-4) | Map 1:250000: | Grong |
| Marking point: | Longitude: | 12.6037150 | Latitude: | 64.4796580 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 384826 m. | Y-coord: | 7152639 m. |
|
|
| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Copper | |
| Element(s): | Cu Zn Kis |
| Production |
| Activity: | Pitting | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
Information(s) in free text format |
| Free text |
| A 3-4 m long, N-S trending trench, lies along a major TURAM-EM anomaly. This trench is strongly covered by vegetation. The ore zone here appears to be represented by ca. 2 m (?) of massive pyritic ore and strongly pyrite disseminated dark chlorite rock. A magnetite-bearing recrystallized chert is found immediately to the north of the ore zone. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||
| 1074 | Bedrock |
|
||
| 1075 | Bedrock |
|
||
| 1076 | Bedrock |
|
||
| 1077 | Bedrock |
|
||
| 1078 | Bedrock |
|
| NB! All analyse values are shown at the end of the printout.: |
Name of Locality : Sørvestre skjerp |
| (Object Id : 1742,010,03,00) |
| Location |
| County : | Nord-Trøndelag (17) | Municipality : | Grong (1742) |
| Map 1:50000: | Grong (1823-4) | Map 1:250000: | Grong |
| Marking point: | Longitude: | 12.5869430 | Latitude: | 64.6580070 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 384777 m. | Y-coord: | 7172534 m. |
|
|
| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Copper | |
| Element(s): | Cu Zn Kis |
| Production |
| Activity: | Pitting | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
Information(s) in free text format |
| Free text |
| This showing lies along a major EM anomaly that can be traced directly NE to the main showing at Skiftesmyr. It consists of a 10 m long N-S trending trench. A 3 m thick massive pyrite zone occurs at the south end of the trench, in sharp contact to the south with a pale coloured, medium-grained gabbroic rock. The pyritic ore appears to be devoid of copper and zinc and is somewhat layered having thin layers and zones of dark chlorite rich bands and fragments that trend 310°/75°. The northern contact is more diffuse in nature, grading over to a dark chloritic rock with strong veining and disseminations of pyrite near the contact to the massive pyrite. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| JS96016 | Bedrock |
|
| NB! All analyse values are shown at the end of the printout.: |
Name of Locality : Stordalen vest |
| (Object Id : 1742,010,04,00) |
| Location |
| County : | Nord-Trøndelag (17) | Municipality : | Grong (1742) |
| Map 1:50000: | Grong (1823-4) | Map 1:250000: | Grong |
| Marking point: | Longitude: | 12.6106370 | Latitude: | 64.4790520 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 385156 m. | Y-coord: | 7152559 m. |
|
|
| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Copper | |
| Element(s): | Cu Zn Kis |
| Production |
| Activity: | Pitting | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
Information(s) in free text format |
| Free text |
| This showing lies c. 200 m to the ESE of the Main Skiftesmyr showing at the south-western edge of Stordalen. The showing consists of a 5 m long N-S trending trench that is partly overgrown by moss and low shrubs. The trench cuts through dark, chlorite and amphibole rich layered and schistose rocks that trend to the south-west and dip steeply to the NW (260/75N). Several 10-50 cm wide zones of pale, quartz-albite-sericite rich rock, with minor amphibole and strongly disseminated and veined with quartz and pyrite + chalcopyrite-sphalerite. At the south end of the trench, numerous 1 to maximum 5 cm thick veins rich in coarse grained pyrite and quartz are found in a dark coloured chlorite rich strongly foliated rock. The mineralisation in this trench is associated with an isolated, shallow EM anomaly and appears to be separated from the larger, thick disseminated zone that stretches to the north along the western side of Stordalen. Immediately south of the trench, the rocks are finely layered felsic and mafic tuffs (?) that are in places tightly folded. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| JS96009 | Dump |
|
||||
| JS96010 | Dump |
|
||||
| 1079 | Bedrock |
|
||||
| 1080 | Bedrock |
|
||||
| 1081 | Bedrock |
|
||||
| 1082 | Bedrock |
|
||||
| 1083 | Bedrock |
|
||||
| 1084 | Bedrock |
|
||||
| 1085 | Bedrock |
|
| NB! All analyse values are shown at the end of the printout.: |
Name of Locality : Stordalen nord |
| (Object Id : 1742,010,05,00) |
| Location |
| County : | Nord-Trøndelag (17) | Municipality : | Grong (1742) |
| Map 1:50000: | Grong (1823-4) | Map 1:250000: | Grong |
| Marking point: | Longitude: | 12.6123100 | Latitude: | 64.4849150 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 385261 m. | Y-coord: | 7153209 m. |
|
|
| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Copper | |
| Element(s): | Cu Zn Kis |
| Production |
| Activity: | Pitting | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
Information(s) in free text format |
| Free text |
| This showing consists of a 6 m long, E-W trending trench that cuts roughly perpendicular through strongly foliated, roughly N-S trending, steeply east-dipping (160°/85°) rocks dominated by pale, quartz-albite-sericite schists that carry variable disseminations and cm thick veins of quartz and pyrite + sphalerite. Some dm thick, dark zones rich in chlorite and strongly disseminated in coarse-grained pyrite + chalcopyrite are found at even ca. 1 m intervals in the paler rock. The mineralised zone in this trench lies along a strong, N-S trending EM anomaly that is associated with a thick, continuous disseminated zone that runs N-S along the western edge of Stordalen. This strongly disseminated zone, associated with quartz-albite, quartz-sericite and quartz-chlorite rich hydrothermally altered rock types, has been followed north through drill holes, trending directly into the main massive sulphide orebody at Skiftesmyr and has been interpreted as being part of the main feeder zone to the massive sulphides at Skiftesmyr. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||
| 1110 | Bedrock |
|
||
| 1111 | Bedrock |
|
||
| 1112 | Bedrock |
|
| NB! All analyse values are shown at the end of the printout.: |
Name of Locality : Stordalen øst |
| (Object Id : 1742,010,06,00) |
| Location |
| County : | Nord-Trøndelag (17) | Municipality : | Grong (1742) |
| Map 1:50000: | Grong (1823-4) | Map 1:250000: | Grong |
| Marking point: | Longitude: | 12.6178100 | Latitude: | 64.4803350 |
| EU89-UTM Zone 33 | (Coordinates NOT confirmed) |
| X-coord: | 385506 m. | Y-coord: | 7152689 m. |
|
|
| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Copper | |
| Element(s): | Cu Zn Kis |
Information(s) in free text format |
| Free text |
| Not found in 1996. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||
| 1104 | Bedrock |
|
||
| 1105 | Bedrock |
|
||
| 1106 | Bedrock |
|
||
| 1107 | Bedrock |
|
||
| 1108 | Bedrock |
|
||
| 1109 | Bedrock |
|
| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 1742 - 010 Skiftesmyr |
Element analyses |
( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.) |
| Sample No. | Sample Type | Cu* | Zn* | Pb* | Co* | Ni* | Ag* | Au# |
| JS96006 | Dump | 8514 | 1775 | 1158 | 21 | 161 | 15.9 | 1054.0 |
| JS96007 | Dump | 3620 | 57550 | 269 | 22 | 67 | 6.0 | 414.0 |
| JS96008 | Bedrock | 8490 | 1034 | 349 | 13 | 43 | 7.3 | 809.0 |
| JS96009 | Dump | 4628 | 5203 | 864 | 15 | 24 | 14.3 | 173.0 |
| JS96010 | Dump | 4957 | 21644 | 421 | 19 | 31 | 13.3 | 198.0 |
| JS96016 | Bedrock | 2264 | 102 | 10 | 19 | 15 | 6.1 | 265.0 |
| 1055 | Bedrock | 1091 | 3694 | 196 | 14 | 24 | 104.5 | 223.0 |
| 1056 | Bedrock | 2479 | 3264 | 281 | 9 | 73 | 5.9 | 202.0 |
| 1057 | Bedrock | 6664 | 913 | 741 | 26 | 65 | 10.6 | 532.0 |
| 1058 | Bedrock | 8051 | 1690 | 578 | 5 | 69 | 8.2 | 163.0 |
| 1059 | Bedrock | 4355 | 18897 | 191 | 8 | 58 | 5.4 | 149.0 |
| 1060 | Bedrock | 30062 | 2453 | 1272 | 18 | 37 | 43.7 | 9874.0 |
| 1061 | Bedrock | 6365 | 890 | 2917 | 13 | 45 | 43.7 | 3914.0 |
| 1069 | Bedrock | 186 | 720 | 16 | 17 | 54 | .6 | 22.0 |
| 1070 | Bedrock | 153 | 76 | 4 | 26 | 37 | .2 | 10.0 |
| 1071 | Bedrock | 230 | 1637 | 8 | 22 | 71 | .6 | 29.0 |
| 1072 | Bedrock | 468 | 773 | 7 | 15 | 159 | 1.1 | 10.0 |
| 1073 | Bedrock | 1029 | 478 | 7 | 15 | 113 | .5 | 7.0 |
| 1074 | Bedrock | 1298 | 537 | 9 | 25 | 112 | 1.2 | 15.0 |
| 1075 | Bedrock | 690 | 29 | 2 | 23 | 43 | .3 | 5.0 |
| 1076 | Bedrock | 5566 | 831 | 13 | 25 | 106 | 3.2 | 16.0 |
| 1077 | Bedrock | 544 | 1557 | 5 | 24 | 99 | .4 | 6.0 |
| 1078 | Bedrock | 1302 | 1114 | 23 | 28 | 114 | 1.7 | 18.0 |
| 1079 | Bedrock | 3620 | 718 | 479 | 49 | 49 | 11.3 | 1232.0 |
| 1080 | Bedrock | 526 | 120 | 19 | 18 | 43 | 2.2 | 383.0 |
| 1081 | Bedrock | 1289 | 2781 | 7 | 15 | 31 | 11.2 | 323.0 |
| 1082 | Bedrock | 2903 | 767 | 226 | 5 | 9 | 10.6 | 268.0 |
| 1083 | Bedrock | 8527 | 1036 | 28 | 35 | 43 | 17.1 | 1426.0 |
| 1084 | Bedrock | 5656 | 36527 | 27 | 14 | 27 | 12.9 | 425.0 |
| 1085 | Bedrock | 8624 | 25032 | 53 | 11 | 21 | 15.3 | 435.0 |
| 1104 | Bedrock | 24961 | 12738 | 5 | 22 | 10 | 33.9 | 206.0 |
| 1105 | Bedrock | 15186 | 5905 | 2 | 16 | 8 | 22.4 | 148.0 |
| 1106 | Bedrock | 2541 | 801 | 2 | 33 | 10 | 3.4 | 105.0 |
| 1107 | Bedrock | 2122 | 10280 | 2 | 23 | 10 | 5.2 | 94.0 |
| 1108 | Bedrock | 389 | 412 | 7 | 8 | 5 | 14.6 | 1223.0 |
| 1109 | Bedrock | 4064 | 20907 | 19 | 23 | 5 | 4.5 | 30.0 |
| 1110 | Bedrock | 11 | 168 | 6 | 86 | 2 | .1 | 8.0 |
| 1111 | Bedrock | 4 | 229 | 2 | 8 | 13 | 2.5 | 124.0 |
| 1112 | Bedrock | 79 | 19 | 5 | 7 | 1 | 1.0 | 51.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | Rh# | As* | Cd* | Ba* | Mo* | Sb* | Bi* |
| JS96006 | 5.0 | 5.0 | 1.0 | 759 | 3.5 | 13 | 25.00 | 20 | 14 |
| JS96007 | 4.0 | 4.0 | 1.0 | 150 | 155.2 | 10 | 4.00 | 2 | -2 |
| JS96008 | -1.0 | 1.0 | -1.0 | 321 | 3.0 | 7 | 4.00 | 10 | 12 |
| JS96009 | -1.0 | -1.0 | -1.0 | 62 | 17.0 | 19 | 8.00 | 2 | 8 |
| JS96010 | -1.0 | 1.0 | -1.0 | 58 | 82.0 | 13 | 2.00 | -2 | 6 |
| JS96016 | -1.0 | -1.0 | -1.0 | 26 | -.2 | 5 | 1.00 | -2 | 2 |
| 1055 | 4.0 | 3.0 | 201 | 11.9 | 11 | 14.00 | 2 | 5 | |
| 1056 | 2.0 | 3.0 | 71 | 8.6 | 9 | 18.00 | 3 | 6 | |
| 1057 | 7.0 | 4.0 | 408 | 3.2 | 10 | 26.00 | 6 | 14 | |
| 1058 | 5.0 | 2.0 | 252 | 6.1 | 6 | 16.00 | 11 | 15 | |
| 1059 | 3.0 | 4.0 | 133 | 59.9 | 3 | 3.00 | 2 | 5 | |
| 1060 | 6.0 | 13.0 | 836 | 9.9 | 8 | 24.00 | 14 | 52 | |
| 1061 | 3.0 | 14.0 | 958 | 3.3 | 6 | 32.00 | 32 | 64 | |
| 1069 | 4.0 | 11.0 | 1218 | 2.4 | 6 | 7.00 | 2 | 4 | |
| 1070 | 4.0 | 4.0 | 1131 | .5 | 12 | 7.00 | 2 | 2 | |
| 1071 | 4.0 | 15.0 | 2729 | 6.5 | 7 | 15.00 | 2 | 3 | |
| 1072 | 6.0 | 10.0 | 136 | 3.6 | 7 | 12.00 | 2 | 2 | |
| 1073 | 5.0 | 2.0 | 2 | 2.3 | 15 | 9.00 | 2 | 4 | |
| 1074 | 1.0 | 2.0 | 8 | 2.0 | 12 | 43.00 | 2 | 13 | |
| 1075 | 8.0 | 3.0 | 2 | .7 | 10 | 116.00 | 2 | 5 | |
| 1076 | 4.0 | 7.0 | 97 | 3.3 | 7 | 22.00 | 2 | 2 | |
| 1077 | 1.0 | 2.0 | 2 | 4.4 | 16 | 34.00 | 2 | 15 | |
| 1078 | 2.0 | 8.0 | 85 | 2.9 | 8 | 16.00 | 2 | 7 | |
| 1079 | 3.0 | 4.0 | 82 | 2.7 | 27 | 3.00 | 2 | 13 | |
| 1080 | 5.0 | 3.0 | 61 | .2 | 14 | 2.00 | 2 | 2 | |
| 1081 | 3.0 | 3.0 | 65 | 8.6 | 6 | 5.00 | 2 | 13 | |
| 1082 | 1.0 | 2.0 | 35 | 2.1 | 10 | 2.00 | 5 | 2 | |
| 1083 | 7.0 | 6.0 | 132 | 3.8 | 13 | 8.00 | 2 | 8 | |
| 1084 | 1.0 | 3.0 | 86 | 133.2 | 11 | 7.00 | 2 | 2 | |
| 1085 | 1.0 | 2.0 | 78 | 95.1 | 13 | 12.00 | 2 | 3 | |
| 1104 | 3.0 | 3.0 | 10 | 20.7 | 5 | 2.00 | 2 | 2 | |
| 1105 | 1.0 | 3.0 | 10 | 9.2 | 5 | 5.00 | 2 | 7 | |
| 1106 | 1.0 | 2.0 | 17 | 2.1 | 12 | 1.00 | 2 | 8 | |
| 1107 | 1.0 | 2.0 | 19 | 16.2 | 10 | 2.00 | 2 | 9 | |
| 1108 | 2.0 | 2.0 | 21 | 1.4 | 19 | 12.00 | 2 | 2 | |
| 1109 | 1.0 | 3.0 | 11 | 32.2 | 5 | 9.00 | 2 | 17 | |
| 1110 | 1.0 | 3.0 | 17 | .2 | 10 | 6.00 | 2 | 8 | |
| 1111 | 1.0 | 2.0 | 2 | .2 | 2 | 1.00 | 2 | 2 | |
| 1112 | 1.0 | 2.0 | 10 | .2 | 23 | 2.00 | 2 | 3 |
| ------------------ |
| Sample No. | S% | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* |
| JS96006 | 21.26 | 22 | 3 | 122 | 37.21 | -2.00 | 6.00 | -2 | 9.0 |
| JS96007 | 34.06 | 14 | 8 | 385 | 26.48 | -2.00 | -5.00 | -2 | 8.0 |
| JS96008 | 7.44 | 50 | 10 | 255 | 12.28 | -2.00 | -5.00 | -2 | 43.0 |
| JS96009 | 9.00 | 17 | 9 | 193 | 9.97 | -2.00 | -5.00 | -2 | 13.0 |
| JS96010 | 32.91 | 35 | 15 | 109 | 20.71 | -2.00 | -5.00 | -2 | 8.0 |
| JS96016 | 28.93 | 44 | 16 | 129 | 20.34 | -2.00 | -5.00 | 4 | 9.0 |
| 1055 | 13.22 | 14 | 8 | 75 | 12.74 | 10.00 | 5.00 | 4 | 27.0 |
| 1056 | 24.11 | 16 | 7 | 63 | 27.30 | 5.00 | 5.00 | 4 | 9.0 |
| 1057 | 22.30 | 16 | 5 | 50 | 28.17 | 6.00 | 5.00 | 1 | 5.0 |
| 1058 | 17.30 | 28 | 11 | 135 | 21.47 | 5.00 | 5.00 | 4 | 8.0 |
| 1059 | 33.32 | 3 | 4 | 121 | 23.96 | 3.00 | 5.00 | 2 | 1.0 |
| 1060 | 24.25 | 9 | 7 | 72 | 25.07 | 3.00 | 5.00 | 4 | 7.0 |
| 1061 | 25.26 | 15 | 5 | 88 | 23.74 | 5.00 | 5.00 | 1 | 9.0 |
| 1069 | 29.44 | 12 | 3 | 33 | 24.96 | 5.00 | 5.00 | 2 | 4.0 |
| 1070 | 11.64 | 18 | 7 | 57 | 11.43 | 5.00 | 5.00 | 1 | 4.0 |
| 1071 | 28.02 | 10 | 5 | 46 | 22.50 | 7.00 | 11.00 | 5 | 2.0 |
| 1072 | 21.13 | 15 | 9 | 74 | 29.95 | 4.00 | 5.00 | 1 | 3.0 |
| 1073 | 15.11 | 19 | 34 | 114 | 21.62 | 3.00 | 5.00 | 1 | 6.0 |
| 1074 | 20.09 | 8 | 1 | 96 | 32.54 | 6.00 | 5.00 | 1 | 3.0 |
| 1075 | 10.84 | 21 | 12 | 161 | 13.41 | 3.00 | 5.00 | 1 | 4.0 |
| 1076 | 22.27 | 9 | 2 | 143 | 31.88 | 5.00 | 5.00 | 1 | 6.0 |
| 1077 | 19.22 | 12 | 2 | 110 | 30.41 | 6.00 | 5.00 | 2 | 2.0 |
| 1078 | 20.52 | 9 | 2 | 143 | 33.34 | 5.00 | 5.00 | 1 | 5.0 |
| 1079 | 13.63 | 42 | 33 | 231 | 13.21 | 3.00 | 5.00 | 1 | 8.0 |
| 1080 | 32.21 | 23 | 5 | 50 | 17.39 | 4.00 | 5.00 | 1 | 12.0 |
| 1081 | 32.72 | 14 | 2 | 72 | 18.11 | 6.00 | 5.00 | 1 | 10.0 |
| 1082 | 4.28 | 5 | 1 | 33 | 4.44 | 2.00 | 5.00 | 1 | 3.0 |
| 1083 | 16.02 | 35 | 69 | 191 | 15.96 | 1.00 | 5.00 | 1 | 3.0 |
| 1084 | 31.97 | 8 | 1 | 41 | 18.38 | 2.00 | 5.00 | 1 | 2.0 |
| 1085 | 27.22 | 8 | 1 | 29 | 17.05 | 1.00 | 5.00 | 4 | 2.0 |
| 1104 | 14.83 | 83 | 1 | 364 | 12.26 | 2.00 | 5.00 | 1 | 3.0 |
| 1105 | 10.72 | 96 | 1 | 552 | 9.64 | 1.00 | 5.00 | 1 | 2.0 |
| 1106 | 18.73 | 126 | 3 | 480 | 15.95 | 2.00 | 5.00 | 1 | 2.0 |
| 1107 | 21.12 | 97 | 1 | 448 | 16.46 | 2.00 | 6.00 | 1 | 2.0 |
| 1108 | 6.21 | 237 | 7 | 561 | 12.21 | 3.00 | 5.00 | 1 | 6.0 |
| 1109 | 15.98 | 74 | 1 | 469 | 15.49 | 2.00 | 5.00 | 4 | 4.0 |
| 1110 | 22.39 | 133 | 1 | 612 | 22.20 | 2.00 | 5.00 | 1 | 1.0 |
| 1111 | .39 | 59 | 8 | 753 | 4.65 | 1.00 | 5.00 | 1 | 12.0 |
| 1112 | 2.06 | 6 | 1 | 46 | 5.63 | 1.00 | 5.00 | 1 | 13.0 |
| ------------------ |
| Sample No. | La* | B* | |||||||
| JS96006 | 5.00 | -3 | |||||||
| JS96007 | 3.00 | 5 | |||||||
| JS96008 | 8.00 | -3 | |||||||
| JS96009 | 1.00 | 4 | |||||||
| JS96010 | 2.00 | 3 | |||||||
| JS96016 | -1.00 | -3 | |||||||
| 1055 | 16.00 | 2 | |||||||
| 1056 | 4.00 | 2 | |||||||
| 1057 | 7.00 | 2 | |||||||
| 1058 | 9.00 | 2 | |||||||
| 1059 | 2.00 | 2 | |||||||
| 1060 | 3.00 | 2 | |||||||
| 1061 | 3.00 | 2 | |||||||
| 1069 | 6.00 | 2 | |||||||
| 1070 | 4.00 | 2 | |||||||
| 1071 | 8.00 | 2 | |||||||
| 1072 | 5.00 | 2 | |||||||
| 1073 | 10.00 | 3 | |||||||
| 1074 | 3.00 | 7 | |||||||
| 1075 | 11.00 | 2 | |||||||
| 1076 | 3.00 | 2 | |||||||
| 1077 | 5.00 | 4 | |||||||
| 1078 | 2.00 | 9 | |||||||
| 1079 | 3.00 | 2 | |||||||
| 1080 | 2.00 | 4 | |||||||
| 1081 | 5.00 | 9 | |||||||
| 1082 | 2.00 | 7 | |||||||
| 1083 | 2.00 | 2 | |||||||
| 1084 | 2.00 | 5 | |||||||
| 1085 | 2.00 | 2 | |||||||
| 1104 | 2.00 | 2 | |||||||
| 1105 | 2.00 | 4 | |||||||
| 1106 | 2.00 | 3 | |||||||
| 1107 | 2.00 | 6 | |||||||
| 1108 | 2.00 | 3 | |||||||
| 1109 | 2.00 | 2 | |||||||
| 1110 | 2.00 | 3 | |||||||
| 1111 | 2.00 | 4 | |||||||
| 1112 | 11.00 | 2 |
| The fact sheet was created on 16.01.2025 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2025 Geological Survey of Norway |