(Last updated: 04.05.2017)
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Norsk versjon | ||||
| THE ???? DATABASE | |||||
| Deposit 0 - 000 FEIL | |||||
| (Object Id: ) (Last updated: 04.05.2017) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Mandal |
| Coordinate system: | UTM-Zone 33 - EUREF89/WGS84 |
| East: | 342750 m. | North: | 6492800 m. |
| Longitude: | 6.2978750 | Latitude: | 58.5472150 |
| Show on map |
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron-Titanium | |
| Element(s): | Fe Ti P V |
| Importance |
| Raw material meaning: | International Importance (reg. 20.05.2015) |
| Resources and production |
| Activity: | Exploration | Reserves: | 190000 thousand tons | |
| Operating method: | Historical production: |
Operations |
| From - To | Activity | Comments | |
| 1999 - 2005 | Geochemistry | Company/Institution :NGU | |
| XRF and mineral chemistry | |||
| 2000 - 2004 | Detail mapping | Company/Institution :NGU/Henrik Schiellerup | |
| Detail mapping and hand specimen sampling. |
Mineralization |
| Era: | Proterozoic | Period: | Neoproterozoic | |
| Dating: | 931 (-3\+3) million year | Method: | U/Pb | |
| Genesis: | Orthomagmatic formation | Form: | Layer | |
| Main texture: | Banded | Min. distribution: | Semi-massive (20-50 % ore minerals) |
| Main grain size: | Medium grained (1-3 mm) | Main alteration: |
| Strike/Dip: | 105 / 60 | Direction: | ||
| Plunge: |
| Ti-deposit type(s) |
| Main type: | Magmatic | Ilm/Mt-ratio: | 1 - 5 | |
| Sub type: | Ilm +/- Mt +/- Ap in mafic intrusion | %TiO(Ore): | 6 - 12 | |
| Titanium province: | Rogaland anorthosite province | %P2O5(Ore): | > 3 | |
| Host rock: | Anorthosite | %MgO(Ilm): | 1 - 3 | |
| Main Ti mineral: | Ilmenite | %V2O3(Mt): | > 0.8 | |
| ppm U (Rutile): |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Neoproterozoic |
| Province: | South Norwegian Basement Province | |
| Geotec.unit: | Agder Complex | |
| Tectonic complex: | ||
| Igneous complex: | Egersund Anorthosite Complex |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Pyroxene | Major mineral (>10%) | |
| Gangue mineral | Plagioclase | Major mineral (>10%) | |
| Gangue mineral | Biotite | Accessory mineral (<1%) | |
| Ore mineral | Ilmenite | Major mineral (>10%) | |
| Ore mineral | Magnetite | Subordinate mineral (1-10%) | |
| Ore mineral | Apatite | Subordinate mineral (1-10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Gabbronorite | Intrusive Original rock :Gabbro norite |
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| 931 (-3\+3) mill. years;..Method:U/Pb | |||
| Metamorphic facies :Unmetamorphosed |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Primary layering | Strike/Dip :105 / 60 | Syn-mineralisation ;...Effect :Controls |
Information(s) in free text format |
| Abstract |
| Oxide- and apatite-rich modally layered gabbronorite in the Bjerkreim-Sokndal Layered Intrusion in the Rogaland Anorthosite Province. The stratigraphic sequence, to wich the Teksevatnet-Lauvneset deposit belongs, is conventionally denoted MCU4-e and may be followed along strike from Rappstad in the southern extension around the hinge of the Bjerkreim lobe to Heskestad in the northeastern extension - a total distance of approximately 25 km. The thickness of the zone is variable, both stratigraphically and in exposure, decreasing from up to 2000 m in the central most part to around 500 m on the flanks. The economic part of this zone forms a 10 km long and 50 m to 170 m thick zone from the Terland area to the Ualand area. A persistent melanocratic inteval at the base of MCU IVe has been documented through 9 surface sampling profiles and two short drill holes Currently, apatite has to be considered the prime commodity with ilmenite and vanadian magnetite as important bi-products. |
| Description |
| At Lauvneset the thickness of MCU IVe is in the order of 500 m. The economic part has a thickness of approximately 80m. The mineralised zone of MCU IVe has been surveyed through 9 surface sampling profiles and two short drill holes by lito rigg. This leads to the following assessment: Resource area : 30 – 90 m x 8500 m, eq. 250000 - 700000 m2 Average value mineral content : Apatite: 10 % Ilmenite: 14 % Magnetite: 8 % MgO (in ilmenite): 1.0-1.8 % V2O3 (in magnetite): 0.90 Assumed continuity to a depth of 100 m gives a resource base of around 190 Mt Grades may be increased by further constraining width or length of deposit area. |
| Free text |
| The deposit is part of the same zone (MCU4-e) as the deposit described as Terland S and Teksestemmen (also Eigersund county) and Teksevatnet S, Bilstadvatnet-W, Bilstadvatnet-Storaneset, Mjåsund, Ollestad and Ualand (all located in Lund county). Lauvneset is a peninsula in the easternmost part of Teksevatnet easy accessible by foot from the road to Bjørnemoen. The peninsula provides a spectacular section through well-developed modal graded and isomodal layering in addition to erosion structures, slump structures and impact structures related to xenoliths of the gneissic and anorthositic wall rock. The lake was 2 m lower than normal water level at the time of observation and sampling. In contrast to the locations at Teksestemmen and Teksevatnes S a continuous zone of cm-dm-scale layered melanocratic gabbronorite was encountered. The thickness of this zone is in the order of 40 m. Orientation of layering: 105/60 South. At Lauvneset the thickness of MCU IVe is in the order of 500 m. The amounts of apatite, ilmenite and magnetite have increased slightly with respect to Teksestemmen and Teksevatnet South. A total of 11 samples from Lauvneset represent a 115 m thick sequence of which a 30 m thick part is of economic interest (22-33% norm value minerals). Norm calculations from XRF whole rock analyses gives an average of 12.7 % ilmenite, 7.3 % magnetite and 9.5 % apatite. The mineral composition of ilmenite and magnetite has been analysed by electron microprobe giving in average 1.29 % MgO in ilmenite and 0.80 % V2O3 in magnetite. |
| References |
| Schärer, U., E. Wilmart, et al. (1996). The short duration and anorogenic character of anorthosite magmatism: U-Pb dating of the Rogaland complex, Norway. Earth Planet. Sci. Lett. 139: 335-350. Egersund-Ogna: 929±2 Ma Helleren: 932±3 Ma Åna-Sira: 932±3 Ma Tellnes jotunite dyke: 931±5 Ma Tellnes ilmenite norite: 920±3 Ma Deformation of foliated margin in Egersund-Ogna: 915 Ma Ihlen, P., Schiellerup, H., Gautneb, H. and Skår, Ø. 2014. Characterization of apatite resources in Norway and their REE potential - a review. Ore Geology Reviews 58, 126-147 |
| Photo(s) from the Deposit area: |
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Bibliography: |
| From NGU's Reference Archive: |
| Meyer, G.B.; Schiellerup, H.; Tegner, C. , 2002 |
| Chemical characterisation of ilmenite, magnetite and apatite in the Bjerkreim-Sokndal Layered Intrusion, Rogaland, South Norway |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.2002.042;25 pages |
| Abstract: | |
| During 2001 cooperation was established between NGU and Norsk Hydro Agri in order to locate combined resources of apatite, ilmenite and vanadium magnetite in the Bjerkreim-Sokndal layered Intrusion in the Rogaland Anorthosite Province of aouth Norway. It had previously been recognized that a potential existed for finding coexisting apatite, low-Mg= ilmenite and vanadium-rich magnetite in the northern part (the Bjerkreim-lobe) of the layered intrusion. It had also become apparent that none of the minerals are present in amounts that can support exploitation of one mineral alone. Fieldwork was undertaken during July 2001 with the purpose of locating and constraining the most promising areas in terms of volume and grade of the three target minerals in the Bjerkreim-lobe. Three apatite-bearing and oxide-rich zones were singled out, sampled and preliminarily constrained. These zones are located with one area in mega-cyclic unit (MCU) IBe (Åsen-Bjerkreim), containing up to 41% of the three minerals, two areas in MCU IIIe (Helland and Terland respectively), with up to 34% of the three minerals, and in MCU IVe (Teksevatnet-Vasshus), with 32% ilmenite, magnetite and apatite. The fieldwork and subsequent whole-rock chemical analyses (XRF) were described and discussed by Schiellerup et al. (2001). In the apatite. and oxide-rich part of MCU IBe the MgO-content of ilmenite vary between 1.36 and 2.26% with an average of 1.8%. Stratigraphically dependant variation has not been resolved and the highest MgO contents in ilmenite tend to occur in the most mafic layers. In the two MCU III prospects at Helleland and Terland the MgO-content in ilmenite averages 2.2 and 2.5% respectively, whereas the Teksevatnet profile yield an average of 1.4% MgO in ilmenite. In the Teksevatnet profile the modal contrast between mafic and felsic layers is exceptional and the MgO-content of ilmenite is consi |
| Schiellerup, H.; Meyer, G.B.; Tegner, C.; Robins, B.; Korneliussen, A. , 2001 |
| Resources of apatite, ilmenite and magnetite in the Bjerkreim Sokndal Layered Intrusion, Rogaland, South Norway |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.2001.092;33 pages |
| Abstract: | |
| The Rogaland Anorthosite Province in southwest Norway is well known for its many ilmenite deposits, of which Tellnes is at present the only one in product- ion In addition to ilmenite, the province carries a significant potential for apatite and vanadium-rich magnetite occurring in the layered series of the Bjerkreim-Sokndal Layered Intrusion. The current study was undertaken in order to locate exploitable resources of combined apatite, ilmenite and vanadian magnetite in the Bjerkreim-lobe of the Bjerkreim-Sokndal intrusion. |
| Korneliussen, A.; Furuhaug, L.; Gautneb, H.; McEnroe, S.; Nilsson, L.P.; Sørdal, T. , 2001 |
| Forekomster med ilmenitt, vanadiumholdig magnetitt og apatitt i norittiske bergarter i Egersundfeltet, Rogaland |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.2001.014;29 pages |
| Abstract: | |
| Ved tidligere undersøkelser er det påvist at norittiske bergarter i omrpåden Sokndal og Bjerkreim inneholder betydelige mengder av apatitt, ilmenitt og vanadiumholdig magnetitt, men at forekomstene er lavgehaltige. En rekke norittrelaterte forekomster inneholder i størrelsesorden 10% apatitt, 10% ilmenitt og 10% magnetitt. De minerallogiske kvaliteter synes å være gode. For eksempel forekommer ilmenitt med relativt lavt MgO-innhold (i størrelsesorden 1%) og magnetitt med høyt V-innhold (0.7-1.2% V2O2) sammen med C1-fattig apatitt i visse deler av området, noe som er positivt med tanke på mulighetene for framtidig gruvedrift. Samtidig er de samlede ressurser av kombinert apatitt ilmenitt og vanadiumrik magnetitt store. Og det burde være rimelig gode muligheter til å påvise nye forekomster med minst like gode kvaliteter som de som er påvist fram til nå. |
| Marker, Mogens; Schiellerup, Henrik; Meyer, Gurli; Robins, Brian; Bolle, Olivier , 2004 |
| Beskrivelse til geologisk kart over Rogaland Anortosittprovins, 1:75 000 |
| ;Norges geologiske undersøkelse;FAGRAPPORT;NGU-rapport; No.2004.007;23 pages |
| Abstract: | |
| Det geologiske kartet er en oppdater oversikt over geologien i anortosittprovinsen i Rogaland, og kan danne grunnlag for forståelsen av de eksisterende geolgoiske ressursene og fremtidig mineralleting i provinsen. Kartet setter mineralressursene i en geologisk sammenheng og bidrar til å forstå deres opprinnelse og utbredelse. Det geologiske kartet er utarbeidet som et digitalt kart, hvilket vil lette dets anvendelse som basiskart for diverse typer nåværende og fremtidige undersøkelser i anortosittprovinsen av både økonomisk og vitenskapelig karakter. Rogaland anortosittprovinsen er ca. 930 millioner år gammel og omfatter flere anortositt-massiver, den lagdelte Bjerkreim-Sokndal Intrusjonen og sene norittiske og jotunittiske til charnokittiske intrusjoner. Det eldste massivet er Egersund-Ogna Anortositten i vest, som err skilt fra den folieret Håland Annortositten med en sone av sterkt foliert båndet gneis. Den yngre, udeformerte Helleren Anortositten i den sentrale del av provinsen intruderer og skjærer både Egersund-Ogna og Håland Anortosittene. Helleren Anortositteni den sentrale del av provinsen intruderer og skjærer både Egersund-Ogna og Håland Anortosittene. helleren Anortositten er en vestlig fortsettelse av Åna-Sira Anortositten. De er bare øverst adskilt av et trau (lobe) av den yngre lagdelte Bjerkreim-Sokndal Intrusjonen. Denne ligger i en uregelmessig traustruktur over både anortositt-massivene og gneisene i den nordøstlige del av provinsen. Over Bjerkreim-Sokndal Intrusjone opptrer mangeritt og kvarts-mangeritt, som strekker seg sørøstover i den såkalte Apofyse-intrusjonen. Provinsen gjennomsettes av en rekke sene jotunittiske og mangerittiske bergarter i form av ganger og små kropper. De største er Eia-Rekefjord Intrusjonen i trauet mellom Helleren og Åna-Sira Anortosittene og Hadland Intrusjonen lengst i vest, som begge består av jotunittiske bergarter. En |
| Korneliussen, Are; McEnroe, Suzanne A.; Nilsson, Lars-Petter; Schiellerup, Henrik; Gautneb, Håvard; Meyer, Gurli B.; Størseth, Leif Roger , 2000 |
| An overview of titanium deposits in Norway |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU Bulletin; No.436;27-38 pages |
| Abstract: | |
| Titanium deposits in Norway are of three major types: igneous, metasomatic and metamorphic. The igneous deposits are compared of ilmenite, magnetite and apatite in various proportions and occur in geological provinces of different ages. and some have a metamorphic overprint. The other majord Ti ore-types is the rutile-bearing eclogites in western Norway that formed during the Caledonian high-pressure metamorphism of predominantly Proterozoic basic igneous rocks. The third Ti ore-Type is the Proterozoic rutile-bearing, scapolitised and albitised rocks in the Bamble region of South Norway. |
| Ihlen, Peter M.; Schiellerup, Henrik; Gautneb, Håvard; Skår, Øyvind , 2014 |
| Characterization of apatite resources in Norway and their REE potential — A review |
| ;Elsevier;ARTIKKEL;Ore geology reviews; No.58;126-147 pages |
| Abstract: | |
| Apatite is a necessity for the production of phosphorus fertilizers and presents a potential raw material for the extraction of REE and Y. A wide spectrum of apatite deposits is found in Norway including sedimentary, igneous, and vein type deposits. The igneous deposits which appear to have the greatest potential for exploitation occur associated with alkaline complexes, massif-type anorthosite complexes and monzonitic complexes. One of the most promising is found in the monzonoritic Bjerkreim–Sokndal Layered Intrusion of the early Neoproterozoic Rogaland Anorthosite Province in southwest Norway. |
Name of Sample point: NH-95 |
| (Object Id: 16110 11,10,01) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Mandal |
| County: | UTM-Zone 33 - EUREF89/WGS84 |
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron-Titanium | |
| Element(s): | Fe Ti P V |
Information(s) in free text format |
| Description |
| Base MCU-4e. Magnetite-apatite-ilmenite gabbronorite (phimaC). Leucocratic. Outcrop along the lake shore a few metres above north shore of little bay. No strong modal layering observed. Relative stratigraphic height in profile 10: 0 m |
Name of Sample point: NH-96 |
| (Object Id: 16111 11,10,02) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Mandal |
| County: | UTM-Zone 33 - EUREF89/WGS84 |
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron-Titanium | |
| Element(s): | Fe Ti P V |
Information(s) in free text format |
| Description |
| Base MCU-4e. Magnetite-apatite-ilmenite gabbronorite (phimaC). Leucocratic. A few metres above north shore of little bay. Relative stratigraphic height in profile 10: 8 m |
Name of Sample point: NH-97 |
| (Object Id: 16112 11,10,03) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Mandal |
| County: | UTM-Zone 33 - EUREF89/WGS84 |
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron-Titanium | |
| Element(s): | Fe Ti P V |
Information(s) in free text format |
| Description |
| MCU-4e. Magnetite-apatite-ilmenite gabbronorite (phimaC). Average norite from strongly layered and dominantly melanocratic sequence with trough structures. Sample from 5 cm tick leucocratic layer. N tip of Lauvneset. Relative stratigraphic height in profile 10: 28 m |
Name of Sample point: NH-98 |
| (Object Id: 16113 11,10,04) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Mandal |
| County: | UTM-Zone 33 - EUREF89/WGS84 |
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron-Titanium | |
| Element(s): | Fe Ti P V |
Information(s) in free text format |
| Description |
| MCU-4e. Magnetite-apatite-ilmenite gabbronorite (phimaC). Cm-scale layered melanocratic sequence. Sample of 10 cm-thick melanocratic layer. Relative stratigraphic height in profile 10: 28 m |
Name of Sample point: NH-99 |
| (Object Id: 16114 11,10,05) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Mandal |
| County: | UTM-Zone 33 - EUREF89/WGS84 |
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron-Titanium | |
| Element(s): | Fe Ti P V |
Information(s) in free text format |
| Description |
| MCU-4e. Magnetite-apatite-ilmenite gabbronorite (phimaC). Melanocratic layer, 15 cm. One of many such layers alternating with 2-5 cm thick layers of average norite. Relative stratigraphic height in profile 10: 40 m |
Name of Sample point: NH-100 |
| (Object Id: 16115 11,10,06) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Mandal |
| County: | UTM-Zone 33 - EUREF89/WGS84 |
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron-Titanium | |
| Element(s): | Fe Ti P V |
Information(s) in free text format |
| Description |
| MCU-4e. Magnetite-apatite-ilmenite gabbronorite (phimaC). Melanocratic 30 cm thick layer. Immediately above trough structure disturbing a sequence of melanocratic layers. Relative stratigraphic height in profile 10: 49 m |
Name of Sample point: NH-101 |
| (Object Id: 16116 11,10,07) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Mandal |
| County: | UTM-Zone 33 - EUREF89/WGS84 |
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron-Titanium | |
| Element(s): | Fe Ti P V |
Information(s) in free text format |
| Description |
| MCU-4e. Magnetite-apatite-ilmenite gabbronorite (phimaC). Average melanocratic rock. Strong vertical lineation. Numerous cm- to dm-thick rafts of hornfelsed gneiss xenoliths. Relative stratigraphic height in profile 10: 54 m |
Name of Sample point: NH-102 |
| (Object Id: 16117 11,10,08) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Mandal |
| County: | UTM-Zone 33 - EUREF89/WGS84 |
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron-Titanium | |
| Element(s): | Fe Ti P V |
Information(s) in free text format |
| Description |
| MCU-4e. Magnetite-apatite-ilmenite gabbronorite (phimaC). Average melanocratic rock. Same outcrop pattern as sample NH-101. Relative stratigraphic height in profile 10: 57 m |
Name of Sample point: NH-103 |
| (Object Id: 16118 11,10,09) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Mandal |
| County: | UTM-Zone 33 - EUREF89/WGS84 |
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron-Titanium | |
| Element(s): | Fe Ti P V |
Information(s) in free text format |
| Description |
| MCU-4e. Magnetite-apatite-ilmenite gabbronorite (phimaC). Average leucocratic rock. Only sparse layering. Relative stratigraphic height in profile 10: 63 m |
Name of Sample point: NH-104 |
| (Object Id: 16119 11,10,10) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Mandal |
| County: | UTM-Zone 33 - EUREF89/WGS84 |
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron-Titanium | |
| Element(s): | Fe Ti P V |
Information(s) in free text format |
| Description |
| MCU-4e. Magnetite-apatite-ilmenite gabbronorite (phimaC). Average leucocratic rock. Relative stratigraphic height in profile 10: 85 m |
Name of Sample point: NH-105 |
| (Object Id: 16120 11,10,11) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Mandal |
| County: | UTM-Zone 33 - EUREF89/WGS84 |
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| Resource |
| Resource Type: | Ferrous metals(Fe, Mn, Ti) | Resource Subtype: | Iron-Titanium | |
| Element(s): | Fe Ti P V |
Information(s) in free text format |
| Description |
| MCU-4e. Magnetite-apatite-ilmenite gabbronorite (phimaC). Average gabbronorite. Meter-sized gneis-hornfels xenoliths. Sample taken at the point at S end of Lauvneset. Relative stratigraphic height in profile 10: 115 m |
| The fact sheet was created on 07.05.2024 |
Copyright © 2024 Geological Survey of Norway |