(Last updated: 20.03.2020)
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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Occurence 3314 - 049 Nordre Skogen | |||||
| (Object Id: 6020) (Last updated: 20.03.2020) |
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| Location |
| County: | Buskerud | Municipality: | Øvre Eiker (3314) |
| Map 1:50000: | Kongsberg (1714-2) | Map 1:250000: | Skien |
| Coordinate system: | EU89-UTM Zone 32 |
| East: | 540869 m. | North: | 6617579 m. |
| Longitude: | 9.7260500 | Latitude: | 59.6942060 |
| Show on map |
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| Resource |
| Resource Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Resource Subtype: | Lead | |
| Element(s): | Pb Zn Cu |
| Importance |
| Raw material meaning: | Not Assessed (reg. 18.02.2015) |
| Resources and production |
| Activity: | Reserves: | |||
| Operating method: | Historical production: |
Mineralization |
| Era: | Paleozoic | Period: | Permian | |
| Genesis: | Hydrothermal vein | Form: | Irregular | |
| Main texture: | Vein network | Min. distribution: | Irregular (scattered) |
| Main grain size: | Medium grained (1-3 mm) | Main alteration: |
| 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 | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Calcite | Subordinate mineral (1-10%) | |
| Ore mineral | Chalcopyrite | Major mineral (>10%) | |
| Ore mineral | Sphalerite | Major mineral (>10%) | |
| Ore mineral | Galena | Major mineral (>10%) | |
| Ore mineral | Pyrite | Major mineral (>10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Amphibolite | Extrusive Original rock :Basalt |
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| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Foliation | Strike/Dip :15 / 80 | Pre-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| Forekomsten ligger ca. 1 km nordnordvest for gården Smedmoen og en sti kan følges nesten helt fram. Arbeidene består av en skjæring med vegger på 6x1 m og retning 84°. Lengst øst i denne er det en vannfylt synk og i vest er det en grunn overgrodd grøft. Tippen utgjør ca 25 m3. Vertsbergarten er en finkornet, mørk grønn amfibolitt med foliasjon 15°/80°. Den fører også feltspatrike bånd. Sulfidmineraliseringene opptrer i en minst 20 cm bred kvartsgang som også inneholder små mengder karbonat. Denne er ikke blottet i skjerpet, men flere faser med kvarts, dels med hulromsfyllinger er vanlig å se i blokker. Blyglans dominerer og i mindre mengder finnes pyritt, kobberkis og sinkblende. Kullblende er ikke observert. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| BU0213.01 | Dump |
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| NB! All analyse values are shown at the end of the printout.: |
Name of Locality: Nordre Skogen A |
| (Object Id: 37176 49,01,00) |
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| Location |
| County: | Buskerud | Municipality: | Øvre Eiker (3314) |
| Map 1:50000: | Kongsberg (1714-2) | Map 1:250000: | Skien |
| Coordinate system: | EU89-UTM Zone 32 |
| East: | 540847 m. | North: | 6617572 m. |
| Longitude: | 9.7256400 | Latitude: | 59.6941370 |
| Show on map |
|
|
| Resource |
| Resource Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Resource Subtype: | Lead | |
| Element(s): | Pb Zn Cu |
| Resources and production |
| Activity: | Pitting | Reserves: | ||
| Operating method: | Historical production: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Calcite | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrite | Major mineral (>10%) | |
| Ore mineral | Galena | Major mineral (>10%) | |
| Ore mineral | Sphalerite | Major mineral (>10%) | |
| Ore mineral | Chalcopyrite | Major mineral (>10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Banded amphibolite | Extrusive Original rock :Basalt |
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| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Foliation | Strike/Dip :186 / 85 | Pre-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| Dette er en trekantformet synk som ligger vest for en liten bekk, 25 m vest (ca. 250°) for hovedforekomsten. Synken er vannfylt og det er ca. 3 m ned til vannspeilet. Amfibolitten er tydeligere båndet. Lengst vest i synken står det igjen en mindre kvartsgang med ca. retning 56°. På tippen sees kvarts med hulromsfyllinger og antydning til breksjering. Sulfidmineraliseringene er like de i hovedskjerpet. Blyglans dominerer, og danner bånd og aggregater i kvarts. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| BU0213.02 | Dump |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 3314 - 049 Nordre Skogen |
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# |
| BU0213.01 | Dump | 11450 | 92900 | 61100 | 122 | -5 | 162.0 | 64.0 |
| BU0213.02 | Dump | 6990 | 91200 | 90800 | 26 | -5 | 115.0 | 18.0 |
| ------------------ |
| Sample No. | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% | V* | Cr* |
| BU0213.01 | 620 | 381.0 | -50 | -5.00 | 40 | 50 | 10.15 | -5 | 372 |
| BU0213.02 | 190 | 390.0 | -50 | -5.00 | 60 | 40 | 7.81 | -5 | 344 |
| ------------------ |
| Sample No. | Mn* | Fe% | Sr* | Mg* | Al* | P* | K * | Ca* | Sc* |
| BU0213.01 | 210 | 5.83 | -5.0 | -0 | 0 | -50 | -0 | -0 | -5.00 |
| BU0213.02 | 210 | 3.17 | -5.0 | -0 | 0 | -50 | -0 | 0 | -5.00 |
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| Sample No. | Ti* | Hg* | |||||||
| BU0213.01 | -0 | -5 | |||||||
| BU0213.02 | -0 | 11 |
| The fact sheet was created on 19.04.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |