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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 631 - 027 | |||||
| (Last updated 22.mar.2020) | |||||
Name of Deposit Area : Bjørvatnet |
| (Object Id : 0631,027,00,00) |
| The deposit area belongs to the Province : Holtefjell |
| Location |
| County : | Buskerud (06) | Municipality : | Flesberg (0631) |
| Map 1:50000: | Hokksund (1714-1) | Map 1:250000: | Skien |
| Marking point: | Longitude: | 9.6975090 | Latitude: | 59.7876630 |
| EU89-UTM Zone 32 |
| X-coord: | 539153 m. | Y-coord: | 6627970 m. |
|
|
| Commodity |
| Main Type: | Precious metals (Au,Ag,PGE) | Sub Type: | Silver | |
| Element(s): | Ag |
| Production |
| Activity: | Pitting | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: | 20 m3 |
| Importance |
| Public: | Not Assessed (reg. 18.02.2015) |
| Economical: | Not classified/evaluated |
Mineralization |
| Era: | Proterozoic | Period: | Mesoproterozoic | |
| Dating: | Method: | |||
| Genesis: | Unknown | Form: | Layer | |
| Main texture: | Structureless | Min. distribution: | Disseminated (<20 % ore minerals) |
| Main grain size: | Fine grained (< 1 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 | Feldspar | Subordinate mineral (1-10%) | |
| Gangue mineral | Biotite | Subordinate mineral (1-10%) | |
| Ore mineral | Pyrite | Major mineral (>10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Quartzitic rock | Sedimentary Original rock :Quartz sandstone |
|
| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Foliation | Strike/Dip :12 / 85 | Post-mineralisation ;...Effect :Modifies |
Information(s) in free text format |
| Free text |
| Forekomsten ligger på vestsida av Bjørvatnet og er lett tilgjengelig fra en sti fra sørøstenden av vannet. Den består av en tilnærmet øst-vest orientert (96°) vannfylt synk med sidevegger på 6x2 m. De er 2-2,5 m høye over vannspeilet. Biotittførende, kvartsittisk bergart med svakt utvikla foliasjon som har orientering 12°/85° dominerer. På tippen finnes kun svak disseminasjon av jernsulfider i den kvartsittiske bergarten. Ca. 20 m lengre nord finnes en liten grop med tilsvarende mineralisert bergart. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| BU0339.01 | Dump |
|
| NB! All analyse values are shown at the end of the printout.: |
Name of Sample point : Pit |
| (Object Id : 0631,027,00,01) |
| Location |
| County : | Buskerud (06) | Municipality : | Flesberg (0631) |
| Map 1:50000: | Hokksund (1714-1) | Map 1:250000: | Skien |
| Marking point: | Longitude: | 9.6973950 | Latitude: | 59.7898990 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 539144 m. | Y-coord: | 6628218 m. |
|
|
| Commodity |
| Main Type: | Precious metals (Au,Ag,PGE) | Sub Type: | Silver | |
| Element(s): | Ag |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| JSBU.1807 | Bedrock |
|
| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 631 - 027 Bjørvatnet |
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# |
| BU0339.01 | Dump | 114 | 130 | 20 | -5 | -5 | 3.0 | 6.0 |
| JSBU.1807 | Bedrock | 190 | 70 | 39 | 11 | 3 | -1.0 | -1.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sn* | Sb* | Bi* |
| BU0339.01 | 30 | 50 | -5.00 | -10 | -10 | ||||
| JSBU.1807 | -5.0 | 1.0 | 5 | .3 | 100 | 1.00 | 3 | -1 | -1 |
| ------------------ |
| Sample No. | Se* | Ga* | Ge* | In* | S% | Cr* | Mn* | Fe% | Th* |
| BU0339.01 | 2.33 | 6.91 | |||||||
| JSBU.1807 | 2.00 | 15.00 | -1.00 | -1.00 | 5 | 460 | 3.64 | 1.00 |
| ------------------ |
| Sample No. | U* | W* | Sc* | Te* | Hf* | ||||
| BU0339.01 | |||||||||
| JSBU.1807 | -1.00 | -1 | 13.00 | -1.00 | 3.00 |
| The fact sheet was created on 18.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |