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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 833 - 053 | |||||
| (Last updated 28.mar.2020) | |||||
Name of Deposit Area : Åmli |
| (Object Id : 0833,053,00,00) |
| Location |
| County : | Telemark (08) | Municipality : | Tokke (0833) |
| Map 1:50000: | Dalen (1513-4) | Map 1:250000: | Sauda |
| Marking point: | Longitude: | 7.9872810 | Latitude: | 59.3866360 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 442472 m. | Y-coord: | 6583543 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: |
| Importance |
| Public: | Little Importance (reg. 18.02.2015) |
| Economical: | Minor interest , (Confirmed 17.des.2007 by Terje Bjerkgård) |
| Historical: | No , (Confirmed 17.des.2007 by Terje Bjerkgård) |
Operations |
| From - To | Activity | Comments | |
| 1918 | Pitting | Company/Institution :Åmdals Verk |
Mineralization |
| Era: | Proterozoic | Period: | Neoproterozoic | |
| Dating: | Method: | |||
| Genesis: | Hydrothermal vein | Form: | Lens | |
| Main texture: | Fracture filling | Min. distribution: | Irregular (scattered) |
| Main grain size: | Very unevenly grained | Main alteration: |
| Strike/Dip: | 65 / 85 | 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: | Bandak Group | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Muscovite | Subordinate mineral (1-10%) | |
| Ore mineral | Chalcocite | Major mineral (>10%) | |
| Ore mineral | Bornite | Subordinate mineral (1-10%) | |
| Ore mineral | Djurleite | Subordinate mineral (1-10%) | |
| Ore mineral | Digenite | Subordinate mineral (1-10%) | |
| Ore mineral | Chalcopyrite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Wall rock | Conglomerate | Sedimentary Original rock :Conglomerate |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Host rock | Hydrothermal vein | Strike/Dip :65 / 85 | Syn-mineralisation | |
| Wall rock | Foliation | Strike/Dip :224 / 80 | Pre-mineralisation ;...Effect :None |
Information(s) in free text format |
| Free text |
| Denne forekomsten ligger like under en åsrygg vest for gården Åmli. Adkomsten er grei via traktorvei opp fra nedlagt gård. Skjerpet er en liten grøft, 3-4 m lang, 1 m bred og 1 m dyp. Mineralisering består av spredte aggregater av kobberglans i kvarts. Disse kvartsårene gjennomskjærer sidebergarten som består av konglomerat. Det er en 10 cm kvartsgang og to 1-3 cm tykke ganger. Den tykkeste gangen har retning 065/85, mens foliasjonen i sidebergarten har retning 224/80. Skjerpet skal være undersøkt av Åmdal Kobberverk under første Verdenskrig. |
Bibliography: |
| From NGU's Reference Archive: |
| Nordrum, F.S.; van der Wel, D. , 1981 |
| Mineral-, stein- og ertsforekomster innen kartblad Sauda M 1:250 000. (Med fargetrykt kart.) Mineral, rock and ore deposits within the map-sheet Sauda (1:250 000). |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL; KARTBESKRIVELSE;NGU; Skrifter; No.366; 34;1-58 + ka pages |
| Abstract: | |
| The mineral, rock and ore deposits within map-sheet Sauda are described. The most important types are slate and schist, fluorite, and iron-titanium, copper and zinc deposits. Mica, feldspar, soapstone, asbestos, manganese, molybdenum and lead deposits are also present. No significant mining or quarrying activity is in progress at the present time (1978). Most of the occurrences of slate and schist are located within the lower Caledonian thrust zone. The iron-titanium deposits are of magmatic origin and related to mafic intrusives. The fluorite, copper and molybdenum deposits are associated with various stages of hydrothermal activity in Precambrian time. The Sauda zinc deposits occur in metamorphic rocks and have been affected by hydrothermal activity. The lead mineralizations are confined to regions along the eastern border of the Caledonian mountain chain. They are most likely of the same type as the lead deposits occurring along this border elsewhere in Scandinavia. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| TE0326.01 | Dump |
|
| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 833 - 053 Åmli |
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# |
| TE0326.01 | Dump | 104100 | -100 | -100 | -10 | -10 | 759.0 | 3560.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Mo* | Sb* | Bi* | Cr* | Mn* |
| TE0326.01 | 10.0 | 10.0 | -100 | -10.0 | 730.00 | -10 | 800 | -10 | 200 |
| ------------------ |
| Sample No. | Fe% | W* | Sr* | Na* | Mg* | Al* | P* | Ca* | Hg* |
| TE0326.01 | .62 | -10 | -10.0 | 100 | 100 | 1400 | 110 | 500 | -10 |
| The fact sheet was created on 16.01.2025 |
| Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
| Copyright © 2025 Geological Survey of Norway |