(Last updated: 13.03.2024)
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Norsk versjon | ||||
| THE ???? DATABASE | |||||
| Deposit 0 - 000 FEIL | |||||
| (Object Id: ) (Last updated: 13.03.2024) |
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| Location |
| County: | Municipality: | Mangler () |
| Map 1:50000: | Svatsum (1717-1) | Map 1:250000: | Lillehammer |
| County: | UTM-Zone 33 - EUREF89/WGS84 |
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| Resource |
| Resource Type: | Ferroalloys (Cr,Ni,Co,V,Mo,W) | Resource Subtype: | Nickel | |
| Element(s): | Ni Cu Co |
| Importance |
| Raw material meaning: | International Importance (reg. 13.03.2023) |
| Resources and production |
| Activity: | Exploration | Reserves: | 1160 thousand tons | |
| Operating method: | Historical production: |
Products |
| Element/product | Crude ore grade or quality | Reg. date | |
| Co | 0.04 % | 27.10.2023 | |
| Cu | 0.42 % | 27.10.2023 | |
| Ni | 1.0 % | 27.10.2023 |
Operations |
| From - To | Activity | Comments | |
| 2003 - 2006 | Geology | ||
| 2003 - 2006 | Geophysics | ||
| 2004 - 2008 | Core drilling | Company/Institution :Falconbridge Ltd / Blackstone Ventures | |
| Project terminated, possibly temporarily in 2008. Cores transported to the Løkken core store. |
Mineralization |
| Era: | Proterozoic | Period: | ||
| Genesis: | Orthomagmatic formation | Form: | Lens | |
| Main texture: | Min. distribution: | Semi-massive (20-50 % ore minerals) |
| Main grain size: | Main alteration: |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Mesoproterozoic |
| Province: | Caledonides | |
| Geotec.unit: | Jotun Nappe Complex | |
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Ore mineral | Pyrrhotite | Major mineral (>10%) | |
| Ore mineral | Chalcopyrite | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrite | Subordinate mineral (1-10%) | |
| Ore mineral | Pentlandite | Subordinate mineral (1-10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Anorthosite | Intrusive | |
| Metamorphic facies :Amphibolite | |||
| Host rock | Gabbro norite | Intrusive Original rock :Gabbro norite |
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| Metamorphic facies :Amphibolite |
Information(s) in free text format |
| Free text |
| The Stormyra deposit was discovered by Sulfidmalm A/S and Blackstone Ventures Inc. joint venture in 2004. From the web page of Blackstone Ventures Inc.(http://www.blv.ca/s/Espedalen.asp): The Espedalen Ni province covers approximately 55 square kilometres and is centered on a large differentiated mafic intrusion. Numerous small mines, worked in the mid 1800's, and showings occur throughout the property area. Disseminated and massive sulphide type nickel-copper mineralization is typically associated with the peridotite intrusions. Grab samples of high-sulphide mineralization from four of the historical mine dumps average 1.9% Ni and 0.6% Cu. In spite of being extensively mineralized, the area has received only minor amounts of exploration and no modern geophysics. To date, airborne and ground-based UTEM geophysical surveys have identified numerous geophysical conductors. Subsequent drilling of UTEM conductors has returned high grade nickel mineralized zones. The Stormyra target: Drill intercepts of significant nickel mineralization at the Stormyra (P2) target; 14.6m of 1.73% Ni, 0.77% Cu, 0.06% Co and 2.7m of 2.07% Ni, 1.20% Cu, 0.07% Co. January 2009: NI 43-101 classification done by Reddick Consulting Inc.: at a US$100 GMV cut-off, Stormyra contains approximately 1.0 million tonnes of Inferred mineral resources grading 1.09 % Ni, 0.48% Cu and 0.04% Co. Drake refined the Mineral Resources at Stormyra (1.16Mt @ 1% Ni, 0.42% Cu & 0.04% Co) and Dalen (7.8Mt @ 0.28% Ni, 0.12% Cu & 0.02% Co) prospects in accordance with JORC (2012). |
Bibliography: |
| References not to be found in NGU's Reference Archive.: |
| Information on web page of Blackstone Ventures Inc.: http://www.blv.ca/s/Espedalen.asp |
| Corfu, F., & Heim, M. 2014. Geology and U–Pb geochronology of the Espedalen Complex, southern Norway, and its position in the Caledonian nappe systems. Geological Society, London, Special Publications, 390(1), 223-239. https://doi.org/10.1144/jgs2019-010 |
| Mansur, E.T., Slagstad, T., Dare, S.A.S. & Sandstad, J.S. 2023. Geology and sulphide geochemistry of the Ni-Cu-Co mineralisation of the Espedalen Complex, Norway: Constraints for the distribution of magmatic sulphides within a variably deformed anorthosite suite. Ore Geology Reviews 161. |
| Reddick, J., & Armstrong, T. 2009. Technical Report on Resource estimates for Ertelien, Stormyra and Dalen Deposits, Southern Norway. NI43-101 technical report. |
| The fact sheet was created on 26.04.2024 |
Copyright © 2024 Geological Survey of Norway |