(Last updated: 22.09.2023)
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Norsk versjon | ||||
| THE ???? DATABASE | |||||
| Prospect 0 - 000 FEIL | |||||
| (Object Id: ) (Last updated: 22.09.2023) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Bjerkreim (1212-2) | 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 |
| Importance |
| Raw material meaning: | Not Assessed (reg. 19.05.2015) |
| Resources and production |
| Activity: | Exploration | Reserves: | ||
| Operating method: | Historical production: |
Operations |
| From - To | Activity | Comments | |
| 1999 - 2005 | Geochemistry | Company/Institution :Geological Survey of Norway | |
| The project has partly been financed by Norwegian Hydro (now Yara). | |||
| 2000 - 2004 | Detail mapping | Company/Institution :NGU/Gurli B. Meyer | |
| Hand specimen sampling |
Mineralization |
| Era: | Proterozoic | Period: | Mesoproterozoic | |
| 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: | 100 / 90 | Direction: | ||
| Plunge: |
| Ti-deposit type(s) |
| Main type: | Magmatic | Ilm/Mt-ratio: | 1 - 5 | |
| Sub type: | Ilm +/- Mt +/- Ap in mafic intrusion | %TiO(Ore): | ||
| Titanium province: | Rogaland anorthosite province | %P2O5(Ore): | ||
| Host rock: | Norite | %MgO(Ilm): | 1 - 3 | |
| Main Ti mineral: | Ilmenite | %V2O3(Mt): | > 0.8 | |
| ppm U (Rutile): |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Mesoproterozoic |
| Province: | South Norwegian Basement Province | |
| Geotec.unit: | ||
| Tectonic complex: | ||
| Igneous complex: | Egersund Anorthosite Complex |
| Group: | Bjerkreim_Sokndal Intrusion | 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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| Metamorphic facies :Unmetamorphosed |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Primary layering | Strike/Dip :100 / 90 | 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 Terland N deposit belong, is conventionally denoted MCU3-e and may be followed along strike from Rappstad in the southern extension around the hinge of the Bjerkreim lobe to Ualand in the northeastern extension - a total distance of approximately 25 km - but is absent for about 8 km in the central part of the intrusion, due to extensive dyke emplacement (the Lomland Jotunitic Dyke). The thickness of the zone is variable, both stratigraphically and in exposure, decreasing from up to 300 m in the central most part to around 50 m on the flanks. Although the presence of a persistent melanocratic apatite- and oxide-enriched sequence has not been fully documented (partly due to lakes and sedimentary cover) in the MCU3e, melanocratic sequences are at least very frequent. |
| Description |
| The northern flank is overall more melanocratic, and extensive sampling has been performed at Terland, Teksevatnet (west end), Bilstadvatnet and Vasshus. At Terland N. the MCU3e zone has a total stratigraphic thickness of 300 m. At Teksevatnet, 2.5 km further southeast, the thickness of MCU3e has been reduced to around 170 m. In contrast to Terland N., the base of MCU3e at Teksevatnet is characterized by relatively homogenous gabbronorites. Due to extensive cover and a major fault zone, it is not possible to trace the zone continuously between these two profiles. At the east end of Teksevatnet, our investigations were somewhat hampered by poor exposure, but a melanocratic gabbronorite was encountered in the top of MCU3e at Bjørnemoen. The profile at Terland N. is located immediate west of the Terland farms. The samples are taken from scarse and partly weathered outcrops in the fields and in the woods. The lowermost sample is taken from the underlying MCU3d zone (no apatite) and the uppermost sample from the MCU4 a/b zone (Aråsen hill). A total of 11 samples represents this 300m thick sequence. Of those only 3 samples define the 100 m thick zone of economic interest. This is also a zone defined by an interval of dm- to cm-scale layered cumulates. Drilling i strongly recomended to improve the sample resolution. Norm calculations from XRF whole rock analyses gives a total of 15.5% ilmenite, 9.5% magnetite and 9.5% apatite. The mineral composition of ilmenite and magnetite has been analysed by electron microprobe giving in average 2.5% MgO in ilmenite and 1.0% V2O3 in magnetite. |
| Free text |
| The deposit located at Terland N is part of the same zone (MCU3-e) as the deposit descibed as Helleland and TeksevatnetTimrevik (Eigersund County). The profile at Terland N. is located immediate west of the Terland farms. The samples are taken from scarce and partly weathered outcrops in the fields and in the woods. The zone of economic interest is defined by an interval of dm- to cm-scale layered cumulates. Orientation of layering: 100/90 South. The geological unit MCU IIIe at this point has a thickness of 300m of which only the lower 160 m sequence is shown in the diagram. The lowermost sample is taken from the underlying MCUIIId zone (no apatite), the sample at level 20m represents a gradual increase in the amounts of apatite reaching a maximum level at the 30-meter level. The interval from 30 to 130 m defines the 100 m thick zone of economic interest. Above this level our hand specimen sampling indicate that the total content of the value minerals falls to less than 25 %. Enhanced sampling by saw or shallow drilling is strongly recommended to improve the sample resolution. Normative calculations from XRF whole rock analyses gives a total of 15.4% ilmenite, 9.5% magnetite and 9.3% apatite. The mineral composition of ilmenite and magnetite has been analysed by electron microprobe giving in average 2.5% MgO in ilmenite and 0.98% 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: |
| 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. |
| 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 |
| 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. |
| 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. |
Name of Sample point: GBM.BJ.0032 |
| (Object Id: 16075 60,04,01) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Bjerkreim (1212-2) | 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 |
Information(s) in free text format |
| Description |
| MCU 3d. Gabbronorite with no apatite. Weathered outcrop with some modal layering at the edge of field. Relative stratigraphic height in profile 4: 0 m |
Name of Sample point: NH-41 |
| (Object Id: 16076 60,04,02) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Bjerkreim (1212-2) | 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 |
Information(s) in free text format |
| Description |
| MCU 3e. Magnetite-apatite-ilmenite gabbronorite (phimac Cumulate). Just behind a group of beehives some 15 m south of sample locality GBM.Bj.0032. Layering in dm-scale. From the lower and relative mafic part of a 30 cm thick layer. Relative stratigraphic height in profile 4: 20 m |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||||
| NH-41 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point: NH-40 |
| (Object Id: 16077 60,04,03) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Bjerkreim (1212-2) | 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 |
Information(s) in free text format |
| Description |
| MCU 3e. Magnetite-apatite-ilmenite gabbronorite (phimac cumulate). Small hill close to beehives. Dm-scale layered melanogabbronorite. The sample is taken from the middle part of a 40 cm thick mafic layer. Layering: 280/86° N. Relative stratigraphic height in profile 4: 30 m |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||||
| NH-40 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point: NH-39 |
| (Object Id: 16078 60,04,04) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Bjerkreim (1212-2) | 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 |
Information(s) in free text format |
| Description |
| MCU 3e. Magnetite-apatite-ilmenite gabbronorite (phimac cumulate). Strongly modal layered melanogabbronorite (90/80°N). The sample is taken 20 m east of the track by an old stump of a three. Several layers wedge out or get truncated by layers above. Indicates stratigraphic-up to the south. A few xenoliths of hornfels (gneissic wall-rock) are observed. The sample is from a 20 cm thick isomodal mafic layer. Relative stratigraphic height in profile 4: 60 m |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||||
| NH-39 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point: NH-38 |
| (Object Id: 16079 60,04,05) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Bjerkreim (1212-2) | 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 |
Information(s) in free text format |
| Description |
| MCU 3e. Magnetite-apatite-ilmenite gabbronorite (phimac cumulate). 150 m north of NH34. From this outcrop to the outcrop at sample NH-37 there is a marked change from dark gabbronorite with modal layering at cm- to dm-scale to homogeneous leuconorite with little or no modal layering. Here the rocks are slightly altered. The content of magnetite + apatite is relatively high. The sample is from the most mafic layer in the outcrop. Layering: 140/85° NE. Relative stratigraphic height in profile 4: 130 m |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||||
| NH-38 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point: NH-37 |
| (Object Id: 16080 60,04,06) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Bjerkreim (1212-2) | 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 |
Information(s) in free text format |
| Description |
| MCU 3e. Magnetite-apatite-ilmenite gabbronorite (phimac cumulate). 40 metres north of NH-36 by the roots of a brought down three. No visible modal layering. Relative stratigraphic height in profile 4: 150 m |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||||
| NH-37 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point: NH-36 |
| (Object Id: 16081 60,04,07) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Bjerkreim (1212-2) | 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 |
Information(s) in free text format |
| Description |
| MCU 3e. Magnetite-apatite-ilmenite gabbronorite (phimac cumulate). Small hill just north of old track. Homogeneous gabbronorite. Only weak layering (125/ 90°). Relative stratigraphic height in profile 4: 180 m |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||||
| NH-30 | Bedrock |
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| NH-31 | Bedrock |
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| NH-36 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point: NH-35 |
| (Object Id: 16082 60,04,08) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Bjerkreim (1212-2) | 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 |
Information(s) in free text format |
| Description |
| MCU 3e. Magnetite-apatite-ilmenite gabbronorite (phimac cumulate). Weakly layered leocogabbronorite. Relative stratigraphic height in profile 4: 200 m |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||||
| NH-35 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point: GBM.BJ.0031 |
| (Object Id: 16083 60,04,09) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Bjerkreim (1212-2) | 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 |
Information(s) in free text format |
| Description |
| MCU 3e. Magnetite-apatite-ilmenite gabbronorite (phimac cumulate). Altered outcrop in vegetated slope. Relative stratigraphic height in profile 4: 240 m |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||||
| GBM.BJ.0031 | Bedrock |
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| GBM.Bj.9901 | Bedrock |
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| GBM.Bj.9902 | Bedrock |
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| GBM.Bj.9903 | Bedrock |
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| GBM.Bj.9904 | Bedrock |
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| GBM.Bj.9905 | Bedrock |
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| GBM.Bj.9906 | Bedrock |
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| GBM.Bj.9907 | Bedrock |
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| GBM.Bj.9908 | Bedrock |
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| GBM.Bj.9909 | Bedrock |
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| GBM.Bj.9910 | Bedrock |
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| GBM.Bj.9911 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point: NH-34 |
| (Object Id: 16084 60,04,10) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Bjerkreim (1212-2) | 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 |
Information(s) in free text format |
| Description |
| MCU 3e. Magnetite-apatite-ilmenite gabbronorite (phimac cumulate). Slope just below the top of Aråsen and stratigraphically just below the ilmenite layers marking the MCU 3/4 boundary. Slightly altered leucogabbronorite. Relative stratigraphic height in profile 4: 265 m |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | |||||
| NH-34 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point: GBM.BJ.0030 |
| (Object Id: 16086 60,04,11) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Bjerkreim (1212-2) | 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 |
Information(s) in free text format |
| Description |
| MCU 4 a/b. Norite (no magnettite or apatite). 'Average' norite from series of ilmenite-rich layers in the lowermost part of MCU 4. Immediate north of Årasen Hill. Relative stratigraphic height in profile 4: 320 m |
| The fact sheet was created on 02.05.2024 |
Copyright © 2024 Geological Survey of Norway |