(Last updated: 10.06.2015)
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Norsk versjon | ||||
| THE ???? DATABASE | |||||
| Occurence 0 - 000 FEIL | |||||
| (Object Id: ) (Last updated: 10.06.2015) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Stavanger |
| 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 |
| Importance |
| Raw material meaning: | Not Assessed (reg. 10.06.2015) |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| 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 | |
| Detailed 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: | 305 / 27 | 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: | Norite | %MgO(Ilm): | ||
| Main Ti mineral: | Ilmenite | %V2O3(Mt): | ||
| 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 | Plagioclase | Major mineral (>10%) | |
| Gangue mineral | Pyroxene | Major mineral (>10%) | |
| Gangue mineral | Biotite | Accessory mineral (<1%) | |
| Ore mineral | Ilmenite | Major mineral (>10%) | |
| Ore mineral | Apatite | Major mineral (>10%) | |
| Ore mineral | Manganite | 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 :305 / 27 | 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 which the Bilstadvatnet W 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 Ualand in the north-eastern extension - a total distance of approximately 25 km. The two uppermost zones in MCU IV (the e- and f-zones) contain apatite in addition to ilmenite and magnetite. The stratigraphic thickness of these two zones exceeds 1 km in the central part, however the economic part is restricted to the lowermost part (50-170 m) of zone e. The zone of economic interest is further restricted to the northeastern part of the Bjerkreim lobe, the area between Terland and Ualand, a total distance of ~10 km. |
| Description |
| In the area of Bilstadvatnet the thickness of MCU4e zone has increased slightly compared to the Teksevatnet area. At Bilstadvatnet the thickness of MCU IVe is in the order of 1000 m. The economic part has a thickness of approximately 60m. The total amount of apatite + ilmenite + magnetite have increased slightly with respect to Teksevatnet-Lauvneset (also in Lund county). The profile at Bilstadvatnet W was sampled along outcrops on the shore of lake Bilstadvatnet at a peninsula northeast of Bilstad (Neset). A 30 m-thick continuous zone of cm-dm-scale layered melanocratic gabbronorite was encountered. A total of 8 samples represent an 87 m thick sequence of which 6 samples defines a 60 m thick zone of economic interest (24-37% norm value minerals). Norm calculations from XRF whole rock analyses gives an average of 12.5 % ilmenite, 7.2 % magnetite and 10.9 % apatite. The mineral composition of ilmenite and magnetite has been analysed by electron microprobe giving in average xxx % MgO in ilmenite and xxx % V2O3 in magnetite. |
| Free text |
| The deposit located at Bilstadvatnet W is part of the same zone (MCU4-e) as the deposits described as Terland S, Teksestemmen and Teksevatnet S (in Eigersund county) and Teksevatnet-Lauvneset, Bilstadvatnet-Storaneset, Mjåsund, Ollestad and Ualand (all located in Lund county). The outcrops on the western lakeshore of Bilstadvatnet are accessible by walking from the farms of Bilstad. If the stream goes high in Tekseåni a bridge is available at the northernmost of the two farms and a track leads along the northern side of the watercourse to Bilstadvatnet. The profile at Bilstadvatnet W was sampled along outcrops at a peninsula called Neset northeast of Bilstad. A 30 m-thick continuous zone of cm-dm-scale layered melanocratic gabbronorite was encountered. Orientation of layering: 90/85 south. At Bilstadvatnet the thickness of MCU IVe is in the order of 1000 m. The total amount of apatite + ilmenite + magnetite have increased slightly with respect to Teksevatnet-Lauvneset. A total of 8 samples represent an 87 m thick sequence of which 6 samples defines a 60 m thick zone of economic interest (24-37% norm value minerals). Norm calculations from XRF whole rock analyses gives an average of 12.5 % ilmenite, 7.2 % magnetite and 10.9 % apatite. The mineral composition of ilmenite and magnetite has been analysed by electron microprobe giving in average 0.9 % MgO in ilmenite and 0.91 % 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 |
| 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, 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. |
| 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, 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. |
Name of Sample point: NH-171 |
| (Object Id: 16172 14,11,01) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Stavanger |
| 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 |
Information(s) in free text format |
| Description |
| MCU-4e. Layered (cm - dm- scale) sequence in apatite-ilmenite-magnetite bearing gabbronorite. Outcrops along lake shore at Neset consisting of 30% melanocratic layers. Sample from 5-10 cm-thick melanocratic layer just below sample NH-172 (leucocratic layer). Modal layering: 324/35 E (overturned). Relative stratigraphic height in profile 11: 0 m |
Name of Sample point: NH-172 |
| (Object Id: 16173 14,11,02) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Stavanger |
| 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 |
Information(s) in free text format |
| Description |
| MCU-4e. Layered (cm - dm- scale) sequence in apatite-ilmenite-magnetite bearing gabbronorite. Outcrops along lake shore at Neset consisting of 30% melanocratic layers. Sample from 20-25 cm-thick leucocratic layer just above sample NH-171 (melanocratic layer). Modal layering: 324/35 E (overturned). Relative stratigraphic height in profile 11: 0 m |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||||
| NH-172 | Bedrock |
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| NH-173 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point: NH-55 |
| (Object Id: 16174 14,11,03) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Stavanger |
| 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 |
Information(s) in free text format |
| Description |
| MCU-4e. Layered (cm - dm- scale) sequence in apatite-ilmenite-magnetite bearing gabbronorite. Outcrops along lake shore at 'Neset' consisting of 30% melanocratic layers. Sample from 3 cm-thick melanocratic layer. From base of magnetite¿in level. Isoclinal folds and erosional discordances. Modal layering: 305/27 N (overturned). Relative stratigraphic height in profile 11: 27 m |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||||
| NH-55 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point: NH-170 |
| (Object Id: 16175 14,11,04) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Stavanger |
| 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 |
Information(s) in free text format |
| Description |
| MCU-4e. Layered (cm - dm- scale) sequence in apatite-ilmenite-magnetite bearing gabbronorite. Outcrops along lake shore at Neset consisting of 30% melanocratic layers. Sample from 15-20 cm-thick leucocratic layer just below sample NH-169 (melanocratic layer). Modal layering: 350/50 E (overturned). Relative stratigraphic height in profile 11: 32 m |
Name of Sample point: NH-169 |
| (Object Id: 16176 14,11,05) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Stavanger |
| 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 |
Information(s) in free text format |
| Description |
| MCU-4e. Layered (cm - dm- scale) sequence in apatite-ilmenite-magnetite bearing gabbronorite. Outcrops along lake shore at Neset consisting of 30% melanocratic layers. Sample from 10 cm-thick melanocratic layer just above sample NH-170 (leucocratic layer). Modal layering: 350/50 E (overturned). Relative stratigraphic height in profile 11: 32 m |
Name of Sample point: NH-54 |
| (Object Id: 16177 14,11,06) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Stavanger |
| 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 |
Information(s) in free text format |
| Description |
| MCU-4e. Layered (cm - dm- scale) sequence in apatite-ilmenite-magnetite bearing gabbronorite. Outcrops along lake shore at 'Neset'. Sequence dominated by melanocratic layers (65%). Modal layering: 302/35 N (overturned). Relative stratigraphic height in profile 11: 57 m |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||||
| NH-54 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point: NH-53 |
| (Object Id: 16178 14,11,07) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Stavanger |
| 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 |
Information(s) in free text format |
| Description |
| MCU-4e. Layered (cm - dm- scale) sequence in apatite-ilmenite-magnetite bearing gabbronorite. Outcrops along lake shore at 'Neset'. Sequence dominated by melanocratic layers (65%). Sample from melanocratic layer. Modal layering: 302/35 N (overturned). Relative stratigraphic height in profile 11: 65 m |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||||
| NH-53 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point: NH-52 |
| (Object Id: 16179 14,11,08) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Ørsdalsvatnet (1312-3) | Map 1:250000: | Stavanger |
| 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 |
Information(s) in free text format |
| Description |
| MCU-4e. Sequence of apatite-ilmenite-magnetite bearing gabbronorite. Outcrops along canal leading of from lake Bilstadvatnet. Relatively melanocratic sequense only partly layered at a scale of 2-15 cm. Sample from lose block in dump material from the canal construction. Modal layering in nearby outcrop: 285/70 N (overturned). Relative stratigraphic height in profile 11: 87 m |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||||
| NH-52 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
| The fact sheet was created on 29.04.2024 |
Copyright © 2024 Geological Survey of Norway |