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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 1738 - 011 | |||||
| (Last updated 10.des.1998) | |||||
Name of Deposit Area : Okstjern |
| (Object Id : 1738,011,00,00) |
| Location |
| County : | Nord-Trøndelag (17) | Municipality : | Lierne (1738) |
| Map 1:50000: | Nordli (1923-4) | Map 1:250000: | Grong |
| Marking point: | Longitude: | 13.6214800 | Latitude: | 64.3952410 |
| EU89-UTM Zone 33 | (Coordinates IS confirmed) |
| X-coord: | 433531 m. | Y-coord: | 7141779 m. |
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| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Copper | |
| Element(s): | Kis Cu |
| Production |
| Activity: | Pitting | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: | 3 m3 |
| Importance |
| Public: | Not Assessed (reg. 18.02.2015) |
| Economical: | Not classified/evaluated |
Products |
| Element/product | Crude ore grade or quality | |
| CU | 0.9 % |
Operations |
| From - To | Activity | Comments | |
| 1991 - 1991 | Sampling | Company/Institution :NGU |
Mineralization |
| Era: | Proterozoic | Period: | Neoproterozoic | |
| Dating: | Method: | |||
| Genesis: | Volcex | Form: | Irregular | |
| Main texture: | Banded | Min. distribution: | Disseminated (<20 % ore minerals) |
| Main grain size: | Medium grained (1-3 mm) | Main alteration: | Chloritisation |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Neoproterozoic |
| Province: | Caledonides | |
| Geotec.unit: | Køli Nappe Complex | |
| Tectonic complex: | Skjøtingen Nappe | |
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Chlorite | Major mineral (>10%) | |
| Gangue mineral | Sericite | Subordinate mineral (1-10%) | |
| Gangue mineral | Garnet | Subordinate mineral (1-10%) | |
| Gangue mineral | Plagioclase | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrite | Major mineral (>10%) | |
| Ore mineral | Pyrrhotite | Major mineral (>10%) | |
| Ore mineral | Magnetite | Major mineral (>10%) | |
| Ore mineral | Chalcopyrite | Subordinate mineral (1-10%) | |
| Ore mineral | Ilmenite | Accessory mineral (<1%) | |
| Ore mineral | Sphalerite | Accessory mineral (<1%) | |
| Ore mineral | Molybdenite | Accessory mineral (<1%) | |
| Ore mineral | Hematite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Amphibolite | Extrusive Original rock :Basalt |
|
| Metamorphic facies :Amphibolite | |||
| Wall rock | Garnet mica schist | Sedimentary Original rock :Argillaceous sediment |
|
| Metamorphic facies :Amphibolite |
Information(s) in free text format |
| Free text |
| I en bjørkelund rett vest for Okstjern finnes en oppstikkende rusten knaus (5 x 5 m) med noe utsprengt materiale. Området omkring er fullstendig overdekket av løsmasser. Opplysninger om skjerpeaktiviteten finnes ikke. Mineraliseringen er knyttet til en amfibolitt, men blokker med granatglimmerskifer finnes også i skjerpet. Ulike typer mineraliseringer; svovelkis-båndet magnetittmalm med mye granat til semi-massiv magnetkis-svovelkis malm. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| LS91158 | Bedrock |
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| LS91159 | Bedrock |
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| LS91160 | Bedrock |
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| LS91161 | Bedrock |
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| LS91162 | Bedrock |
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| LS91163 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 1738 - 011 Okstjern |
Element analyses |
( *=parts pr. million, #=parts pr.billion, Negative values means below detection limit value.) |
| Sample No. | Sample Type | Cu* | Zn* | Pb* | Co* | Ni* | Ag* | Au# |
| LS91158 | Bedrock | 2840 | 22 | 2 | 10 | 17 | .1 | 2.0 |
| LS91159 | Bedrock | 390 | 19 | 5 | 39 | 9 | .1 | 4.0 |
| LS91160 | Bedrock | 27619 | 164 | 6 | 122 | 12 | 9.0 | 113.0 |
| LS91161 | Bedrock | 1767 | 332 | 2 | 39 | 20 | .5 | 11.0 |
| LS91162 | Bedrock | 4829 | 84 | 8 | 71 | 31 | 1.4 | 17.0 |
| LS91163 | Bedrock | 1554 | 55 | 12 | 15 | 4 | .7 | 5.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% |
| LS91158 | 1.0 | 3.0 | 2 | .2 | 2 | 15.00 | 2 | 2 | 1.12 |
| LS91159 | 1.0 | 3.0 | 5 | .2 | 3 | 13.00 | 2 | 2 | 9.28 |
| LS91160 | 1.0 | 2.0 | 19 | 2.1 | 1 | 3.00 | 2 | 2 | 41.10 |
| LS91161 | 1.0 | 2.0 | 3 | .2 | 2 | 3.00 | 5 | 2 | 8.48 |
| LS91162 | 1.0 | 1.0 | 3 | .7 | 3 | 6.00 | 5 | 8 | 18.05 |
| LS91163 | 1.0 | 1.0 | 15 | .2 | 22 | 18.00 | 5 | 2 | 3.62 |
| ------------------ |
| Sample No. | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* | La* |
| LS91158 | 215 | 7 | 187 | 42.75 | 1.00 | 5.00 | 1 | 1.0 | 2.00 |
| LS91159 | 137 | 26 | 171 | 35.00 | 1.00 | 5.00 | 1 | 1.0 | 2.00 |
| LS91160 | 4 | 16 | 123 | 21.97 | 1.00 | 5.00 | 1 | 1.0 | 2.00 |
| LS91161 | 217 | 47 | 818 | 13.34 | 1.00 | 5.00 | 1 | 2.0 | 2.00 |
| LS91162 | 166 | 18 | 428 | 32.72 | 1.00 | 5.00 | 1 | 1.0 | 2.00 |
| LS91163 | 163 | 23 | 302 | 32.27 | 1.00 | 5.00 | 1 | 1.0 | 2.00 |
| ------------------ |
| Sample No. | B* | ||||||||
| LS91158 | 6 | ||||||||
| LS91159 | 3 | ||||||||
| LS91160 | 4 | ||||||||
| LS91161 | 5 | ||||||||
| LS91162 | 5 | ||||||||
| LS91163 | 8 |
| The fact sheet was created on 19.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |