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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 807 - 011 | |||||
| (Last updated 28.mar.2020) | |||||
Name of Deposit Area : Hollaåsen |
| (Object Id : 0807,011,00,00) |
| Location |
| County : | Telemark (08) | Municipality : | Notodden (0807) |
| Map 1:50000: | Gransherad (1614-2) | Map 1:250000: | Skien |
| Marking point: | Longitude: | 9.2070120 | Latitude: | 59.5934300 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 511688 m. | Y-coord: | 6606152 m. |
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| Commodity |
| Main Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Sub Type: | Copper | |
| Element(s): | Cu Fe |
| Production |
| Activity: | Test mining | Reserves: | ||
| Prod. method: | Underground mining | Production: | ||
| Prod. status: | Disused, closed | Volume of dump: | 150 m3 |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest , (Confirmed 22.nov.2006 by Jan Sverre Sandstad) |
Operations |
| From - To | Activity | Comments | |
| 1756 - 1761 | Test mining | Company/Institution :Stabbedals Kobberverk | |
| 2005 - 2005 | Sampling | Company/Institution :NGU |
Mineralization |
| Era: | Proterozoic | Period: | Neoproterozoic | |
| Dating: | Method: | |||
| Genesis: | Hydrothermal vein | Form: | Lens | |
| Main texture: | Fracture filling | Min. distribution: | Disseminated (<20 % ore minerals) |
| Main grain size: | Fine grained (< 1 mm) | Main alteration: | Silicification |
| Strike/Dip: | Direction: | |||
| Plunge: |
| Stratigraphic classification of host rock |
| Era: | Proterozoic | Period: | Mesoproterozoic |
| Province: | South Norwegian Basement Province | |
| Geotec.unit: | Telemark Supergroup | |
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Heddal Group | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Feldspar | Major mineral (>10%) | |
| Gangue mineral | Amphibole | Major mineral (>10%) | |
| Gangue mineral | Chlorite | Subordinate mineral (1-10%) | |
| Gangue mineral | Calcite | Subordinate mineral (1-10%) | |
| Ore mineral | Chalcocite | Major mineral (>10%) | |
| Ore mineral | Chalcopyrite | Major mineral (>10%) | |
| Ore mineral | Pyrite | Subordinate mineral (1-10%) | |
| Ore mineral | Bornite | Subordinate mineral (1-10%) |
Lithology: |
| Relationship | Rock | Origin | |
| Host rock | Amphibolite | Intrusive Original rock :Dolerite |
|
| Metamorphic facies :Amphibolite | |||
| Wall rock | Quartzite | Sedimentary Original rock :Quartz sandstone |
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| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Wall rock | Foliation | Strike/Dip :18 / 42 | Syn-mineralisation ;...Effect :Modifies |
Information(s) in free text format |
| Free text |
| Forekomsten ble mutet første gang 20.08.1756, og ble drevet av Stabbedals kobberverk fram til 1761. En skogsbilvei nord for Notodden fører fram til en stengt tømmervei som kan følges nesten fram til forekomsten. Koordinatene er til tippen som ligger mellom to skråsynker med avstand ca. 50 m. De er opptil 10 m dype og forbundet med en stoll på dypet. Denne har inngang 50 m sør for den sørligste synken. I hengen i den sørligste synken finnes grå kvartsittisk bergart. Under denne opptrer en opptil 1 m mektig kvartslinse med finkornet amfibolitt med svak kobber- og pyritt-mineralisering under (prøve TE0018.01). Amfibolitten er noe forskifret. Den rikeste mineralisering er funnet i kraftig foliert og silifisert amfibolitt i blokker på tippen (prøve TE0018.02). |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| TE0018.01 | Bedrock |
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| TE0018.02 | Dump |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 807 - 011 Hollaåsen |
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# |
| TE0018.01 | Bedrock | 119 | 123 | -3 | 66 | 28 | .4 | -2.0 |
| TE0018.02 | Dump | 7104 | 49 | 6 | 29 | 16 | 22.3 | 17.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | V* |
| TE0018.01 | -2.0 | -2.0 | -2 | .5 | 435 | 3.00 | 3 | -3 | 202 |
| TE0018.02 | 5.0 | 15.0 | -2 | -.5 | 263 | 2.00 | -3 | -3 | 150 |
| ------------------ |
| Sample No. | Cr* | Mn* | Fe% | W* | Sr* | La* | B* | P* | Ca* |
| TE0018.01 | 6 | 429 | 9.25 | -2 | 25.0 | 2.00 | 5 | 0 | 1 |
| TE0018.02 | 6 | 250 | 5.68 | -2 | 17.0 | 4.00 | -3 | 0 | 1 |
| The fact sheet was created on 15.05.2024 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2024 Geological Survey of Norway |