Norsk versjon | |||||
THE ORE DATABASE | |||||
Deposit Area 437 - 046 | |||||
(Last updated 18.mar.2002) |
Name of Deposit Area : Veslehøa |
(Object Id : 0437,046,00,00) |
Location |
County : | Hedmark (04) | Municipality : | Tynset (0437) |
Map 1:50000: | Kvikne (1620-3) | Map 1:250000: | Røros |
Marking point: | Longitude: | 10.3547630 | Latitude: | 62.2909660 |
EU89-UTM Zone 32 | (Coordinates IS confirmed) |
X-coord: | 570277 m. | Y-coord: | 6907330 m. |
|
Commodity |
Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Copper | |
Element(s): | Cu Kis |
Production |
Activity: | Test mining | Reserves: | ||
Prod. method: | Open pit mining | Production: | ||
Prod. status: | Disused, closed | Volume of dump: | 60 m3 |
Importance |
Public: | Little Importance (reg. 18.02.2015) |
Economical: | Minor interest , (Confirmed 18.mar.2002 by Jan Sverre Sandstad) |
Operations |
From - To | Activity | Comments | |
1998 - 1998 | Sampling | Company/Institution :NGU |
Mineralization |
Era: | Paleozoic | Period: | Ordovician | |
Dating: | Method: | |||
Genesis: | Volcex | Form: | Lens | |
Main texture: | Banded | Min. distribution: | Semi-massive (20-50 % ore minerals) |
Main grain size: | Fine grained (< 1 mm) | Main alteration: | Chloritisation |
Strike/Dip: | 208 / 70 | Direction: | ||
Plunge: |
Stratigraphic classification of host rock |
Era: | Paleozoic | Period: | Ordovician |
Province: | Caledonides | |
Geotec.unit: | Trondheim Nappe Complex | |
Tectonic complex: | ||
Igneous complex: |
Group: | Fundsjø | Formation: |
Mineralogy |
Relationship | Mineral | Amount | |
Gangue mineral | Feldspar | Major mineral (>10%) | |
Gangue mineral | Quartz | Major mineral (>10%) | |
Gangue mineral | Chlorite | Subordinate mineral (1-10%) | |
Gangue mineral | Amphibole | Subordinate mineral (1-10%) | |
Ore mineral | Pyrite | Major mineral (>10%) | |
Ore mineral | Pyrrhotite | Subordinate mineral (1-10%) | |
Ore mineral | Chalcopyrite | Accessory mineral (<1%) |
Lithology: |
Relationship | Rock | Origin | |
Host rock | Felsic metavulcanite | Extrusive Original rock :Rhyodacite |
|
Metamorphic facies :Greenschist | |||
Wall rock | Greenstone | Extrusive Original rock :Basalt |
|
Metamorphic facies :Greenschist |
Structures |
Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
Wall rock | Foliation | Strike/Dip :208 / 70 | Post-mineralisation ;...Effect :Modifies | |
Wall rock | Fold axis | Dir./Plunge :30 / 45 | Post-mineralisation ;...Effect :Modifies |
Information(s) in free text format |
Free text |
Forekomsten ligger rett over skoggrensa i 1000 m's høyde i sørskråningen av Veslehøa. Den ligger på østsida av Rødalen, og det er god utsikt over til Rødalsforekomsten (HE0132) på motsatt side av dalen. Forekomsten er registrert av Nilsen (1978), men det er ikke kjent når det ble skjerpet i området. Forekomsten ligger i metavulkanitter som har vært korrelert med Hersjøformasjonen (=Fundsjøgruppen) (Nilsen & Wollf 1989), men det er noe usikkert hvilken enhet de tilhører. Den antas å være uten økonomisk interesse siden både på grunn av liten størrelse og lavt basemetallinnhold. Hovedskjerpet består av en vannfylt synk med vegger på 5x2,5 m. I nordveggen av synken er blottet sulfidmineralisert kvartskeratofyr. Sulfidmineraliseringen er 1-2 m mektig og er orientert 208°/70°. Den består av semi-masssive bånd (cm-skala) med pyritt i kvartskeratofyr, dels i tilknytning til kvartslinser (prøve HE0132.01-.02 fra tippen). Svakere disseminasjon av pyritt og magnetkis forekommer i kloritt/amfibol-rik kvartskeratofyr (HE0132.03). Sterkt småfoldet (foldeakse 30°/45°) , klorittrik grønnstein med svak sulfiddisseminasjon ligger under kvartskeratofyren i øst. Den intense folding i området demonstreres også i blotninger nord for synken. I heng av sulfidsona finnes kvartskeratofyr med grovkornete amfibolnåler. Skjerpet ligger ca. 50 m sørvest for synken og like under skoggrensen. Det fører tilsvarende sulfidmineralisering som i synken. Årer og smale bånd av pyritt forekommer i sterkt foldet kvartskeratofyr. Få kobberkiskorn er også observert. Langs vestsida av skjerpet dominerer klorittrik skifer. Bergartene er sterkt forvitret. |
Photo(s) from the Deposit area: |
|
Bibliography: |
From NGU's Reference Archive: |
Nilsen, Odd , 1978 |
Caledonian sulphide deposits and minor iron-formations from the southern Trondheim region, Norway. |
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.340;35-85 + k pages |
Abstract: | |
Within the southern and central parts of the Trondheim region of the Norwegian Caledonides a great number of small, stratabound cupriferous pyrite deposits are confined to mafic metavolcanics of the Gula, Støren and Fundsjø Groups of the Lower Palaeozoic succession. The deposits occuring within, or in close contact with the metavolcanics are characterized by their association with minor manganiferous oxide/silicate iron-formations - better known as "vasskis" ore type - within the metamorphic low-grade areas. The iron-fprmations of the metamorphic higher grade terrains on the other hand, which are extensively developed within the Gula Group, are mostly of a pyrrhotitic sulphide/silicate type and sulphurization processes are thought to have played an important role during the metamorphism. The pyrite deposits occurring adjacent to the metavolcanics bear no relationship to the iron-formations. They are embedded in pelitic, often carbonaceous assemblages (Gula Group) or within tuffitic members of the volcanogene Støren Group, and they are thought to represent re-sedimented (reworked) deposits. The pyrite deposits display varying degree of metamorphic reconstitution and a tectonic control has apparently determined their disc- or ruler-shaped morphology. |
Fieldsamples |
Sample No. | Sample type | Miscellanrous | ||||
HE0150.01 | Dump |
|
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HE0150.02 | Dump |
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HE0150.03 | Dump |
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NB! All analyse values are shown at the end of the printout.: |
Name of Locality : Veslehøa skjerp |
(Object Id : 0437,046,01,00) |
Location |
County : | Hedmark (04) | Municipality : | Tynset (0437) |
Map 1:50000: | Kvikne (1620-3) | Map 1:250000: | Røros |
Marking point: | Longitude: | 10.3539800 | Latitude: | 62.2907040 |
EU89-UTM Zone 32 | (Coordinates IS confirmed) |
X-coord: | 570237 m. | Y-coord: | 6907300 m. |
|
Commodity |
Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Copper | |
Element(s): | Cu Kis |
Production |
Activity: | Pitting | Reserves: | ||
Prod. method: | Production: | |||
Prod. status: | Volume of dump: | 4 m3 |
Operations |
From - To | Activity | Comments | |
1998 - 1998 | Sampling | Company/Institution :NGU |
Mineralogy |
Relationship | Mineral | Amount | |
Gangue mineral | Plagioclase | Major mineral (>10%) | |
Gangue mineral | Quartz | Major mineral (>10%) | |
Gangue mineral | Chlorite | Subordinate mineral (1-10%) | |
Gangue mineral | Amphibole | Subordinate mineral (1-10%) | |
Ore mineral | Pyrite | Major mineral (>10%) | |
Ore mineral | Pyrrhotite | Subordinate mineral (1-10%) | |
Ore mineral | Chalcopyrite | Accessory mineral (<1%) |
Lithology: |
Relationship | Rock | Origin | |
Host rock | Felsic metavulcanite | Extrusive Original rock :Rhyodacite |
|
Metamorphic facies :Greenschist |
Structures |
Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
Host rock | Foliation | Strike/Dip :250 / 80 | Post-mineralisation ;...Effect :Modifies |
Information(s) in free text format |
Free text |
Skjerpet ligger ca. 50 m sørvest for synken og like under skoggrensen. Det fører tilsvarende sulfidmineralisering som i synken. Årer og smale bånd av pyritt forekommer i sterkt foldet kvartskeratofyr. Få kobberkiskorn er også observert. Langs vestsida av skjerpet dominerer klorittrik skifer. Bergartene er sterkt forvitret. |
Fieldsamples |
Sample No. | Sample type | Miscellanrous | ||||
HE0150.04 | Dump |
|
NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
from |
Deposit Area 437 - 046 Veslehøa |
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# |
HE0150.01 | Dump | 190 | 17 | 33 | 111 | 7 | .2 | 72.0 |
HE0150.02 | Dump | 594 | 50 | 32 | 183 | 43 | .2 | 77.0 |
HE0150.03 | Dump | 665 | 53 | 28 | 77 | 72 | .9 | 95.0 |
HE0150.04 | Dump | 2313 | 53 | 3 | 50 | 127 | 1.1 | 13.0 |
------------------ |
Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% |
HE0150.01 | .5 | 12.0 | 52 | .1 | 5 | 6.00 | 7 | 2 | 17.00 |
HE0150.02 | 4.0 | 8.0 | 27 | .1 | 7 | 6.00 | 5 | 2 | 16.00 |
HE0150.03 | 4.0 | 17.0 | 29 | .2 | 2 | 6.00 | 6 | 2 | 9.56 |
HE0150.04 | .5 | 8.0 | 1 | .4 | 2 | 4.00 | 5 | 2 | 3.06 |
------------------ |
Sample No. | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* | La* |
HE0150.01 | 6 | 1 | 95 | 15.36 | 1.00 | 4.00 | 1 | 0.5 | 0.50 |
HE0150.02 | 38 | 6 | 231 | 15.69 | 2.00 | 4.00 | 1 | 1.0 | 0.50 |
HE0150.03 | 37 | 135 | 327 | 12.13 | 2.00 | 4.00 | 1 | 0.5 | 1.00 |
HE0150.04 | 12 | 2 | 236 | 4.98 | 2.00 | 4.00 | 1 | 1.0 | 0.50 |
------------------ |
Sample No. | B* | ||||||||
HE0150.01 | 15 | ||||||||
HE0150.02 | 13 | ||||||||
HE0150.03 | 2 | ||||||||
HE0150.04 | 2 |
The fact sheet was created on 18.05.2024 |
Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
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