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Norsk versjon | ||||
| THE INDUSTRIAL MINERAL DATABASE | |||||
| Deposit Area 624 - 309 | |||||
| (Last updated 08.feb.2012) | |||||
Name of Deposit Area : Smebrua |
| (Object Id : 0624,309,00,00) |
| Location |
| County : | Buskerud (06) | Municipality : | Øvre Eiker (0624) |
| Map 1:50000: | Kongsberg (1714-2) | Map 1:250000: |
| Marking point: | Longitude: | 9.7018810 | Latitude: | 59.6812710 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 539524 m. | Y-coord: | 6616124 m. |
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| Commodity |
| Main Type: | Feldspar | Sub Type: | Pegmatitic feldspar |
| Production |
| Activity: | Test mining | Reserves: | ||
| Prod. method: | Open pit mining | Production: | ||
| Prod. status: | Volume of dump: |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest , (Confirmed 08.feb.2012 by Jan Egil Wanvik) |
Products |
| Element/product | Crude ore grade or quality | |
| PEGFEL | % |
Mineralization |
| Era: | Paleozoic | Period: | Permian | |
| Dating: | Method: | |||
| Genesis: | Pegmatite formation | Form: | Lens | |
| Main texture: | Min. distribution: | Massive (>50 % ore minerals) |
| Main grain size: | Coarse grained (> 3 mm) |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Mesoproterozoic |
| Province: | South Norwegian Basement Province | |
| Geotec.unit: | Kongsberg Complex | |
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Not defined | Feldspar | Major mineral (50-90%) | |
| Not defined | Quartz | Major mineral (10-50%) | |
| Not defined | Mica | Subordinate mineral (1-10%) |
Information(s) in free text format |
| Free text |
| Forekomsten befinner seg ca. 300 m VNV for Smebrua over Fiskumelva. Det er lett atkomst via gårdsvei. Det er drevet et lite brudd ca. 10x20 m stort og inntil 3 m dypt. Både Na-spatt og K-spatt pluss litt glimmer. Trolig drevet på feltspat. Kvarts i andel på under 50%. Det ble tatt to kvartsprøver fra fastfjell. |
| Photo(s) from the Deposit area: |
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| The fact sheet was created on 16.12.2025 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2025 Geological Survey of Norway |