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Norsk versjon | ||||
| THE ORE DATABASE | |||||
| Deposit Area 817 - 009 | |||||
| (Last updated 11.mai.2023) | |||||
Name of Deposit Area : Helldal |
| (Object Id : 0817,009,00,00) |
| Location |
| County : | Telemark (08) | Municipality : | Drangedal (0817) |
| Map 1:50000: | Gjerstad (1612-1) | Map 1:250000: | Arendal |
| Marking point: | Longitude: | 9.1564540 | Latitude: | 58.9564210 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-coord: | 508999 m. | Y-coord: | 6535210 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 27.feb.2002 by Jan Sverre Sandstad) |
Mineralization |
| Era: | Proterozoic | Period: | Mesoproterozoic | |
| Dating: | Method: | |||
| Genesis: | Volcex | Form: | Lens | |
| Main texture: | Breccia cement | Min. distribution: | Massive (>50 % 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: | Bamble Complex | |
| Tectonic complex: | ||
| Igneous complex: |
| Group: | Formation: |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Amphibole | Major mineral (>10%) | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Ore mineral | Pyrrhotite | Major mineral (>10%) | |
| Ore mineral | Chalcopyrite | Subordinate mineral (1-10%) | |
| Ore mineral | Sphalerite | Accessory mineral (<1%) |
Information(s) in free text format |
| Free text |
| Gruven ligger under en liten skrent på østsiden av et lite dalføre på østsiden av Hommansfjellet. En traktorvei går gjennom dalen og passerer like under gruvetippen. Den tar av fra veien til Bratthammar gård like etter avkjørselen fra fylkesveien. (JSS/PMI) |
| Photo(s) from the Deposit area: |
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Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| TE0202.01 | Dump |
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| TE0202.02 | Dump |
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| TE0202.03 | Dump |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Deposit Area 817 - 009 Helldal |
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# |
| TE0202.01 | Dump | 9695 | 1117 | 2 | 211 | 107 | 3.9 | 347.0 |
| TE0202.02 | Dump | 15878 | 9331 | 5 | 105 | 50 | 3.8 | 297.0 |
| TE0202.03 | Dump | 41122 | 7333 | 16 | 146 | 73 | 8.7 | 1.0 |
| ------------------ |
| Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% |
| TE0202.01 | 2.0 | 1.0 | 20 | 4.1 | 10 | 6.00 | 2 | 16 | 20.20 |
| TE0202.02 | 1.0 | 2.0 | 8 | 56.9 | 75 | 3.00 | 2 | 21 | 11.30 |
| TE0202.03 | 1.0 | 1.0 | 13 | 45.0 | 14 | 3.00 | 2 | 51 | 15.50 |
| ------------------ |
| Sample No. | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* | La* |
| TE0202.01 | 15 | 14 | 177 | 36.09 | 1.00 | 4.00 | 1 | 12.0 | 2.00 |
| TE0202.02 | 17 | 9 | 356 | 17.61 | 1.00 | 12.00 | 1 | 20.0 | 3.00 |
| TE0202.03 | 2 | 26 | 322 | 23.53 | 1.00 | 9.00 | 1 | 15.0 | 3.00 |
| ------------------ |
| Sample No. | B* | ||||||||
| TE0202.01 | 5 | ||||||||
| TE0202.02 | 2 | ||||||||
| TE0202.03 | 2 |
| 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 |