Norsk versjon | |||||
THE ORE DATABASE | |||||
Occurence 4213 - 018 Langang | |||||
(Object Id: 5302) (Last updated: 18.06.2001) |
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Location |
County: | Agder | Municipality: | Tvedestrand (4213) |
Map 1:50000: | Tvedestrand (1612-2) | Map 1:250000: | Arendal |
Coordinate system: | EU89-UTM Zone 32 |
East: | 494430 m. | North: | 6491795 m. |
Longitude: | 8.9042510 | Latitude: | 58.5665710 |
Show on map |
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Resource |
Resource Type: | Base metals (Cu,Zn,Pb,Fe sulphides, As,Sb,Bi,Sn) | Resource Subtype: | Copper | |
Element(s): | Kis Cu |
Importance |
Raw material meaning: | Little Importance (reg. 18.02.2015) |
Resources and production |
Activity: | Pitting | Reserves: | ||
Operating method: | Historical production: |
Operations |
From - To | Activity | Comments | |
2000 - 2000 | Sampling | Company/Institution :NGU |
Mineralization |
Era: | Proterozoic | Period: | Mesoproterozoic | |
Genesis: | Hydrothermal vein | Form: | Irregular | |
Main texture: | Foliated | Min. distribution: | Disseminated (<20 % ore minerals) |
Main grain size: | Fine grained (< 1 mm) | Main alteration: | No country rock alteration |
Strike/Dip: | 48 / 70 | 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 | Quartz | Major mineral (>10%) | |
Gangue mineral | Biotite | Major mineral (>10%) | |
Ore mineral | Pyrite | Major mineral (>10%) | |
Ore mineral | Chalcopyrite | Subordinate mineral (1-10%) |
Lithology: |
Relationship | Rock | Origin | |
Host rock | Pegmatite | Intrusive Original rock :Granite pegmatite |
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Metamorphic facies :Amphibolite | |||
Host rock | Biotite schist | Sedimentary | |
Metamorphic facies :Amphibolite |
Structures |
Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
Host rock | Foliation | Strike/Dip :48 / 70 | Pre-mineralisation ;...Effect :None |
Information(s) in free text format |
Free text |
Skjerpet ligger tett ved en sti ca. 4-500 nord for gårdene på Langang. Det består av en utsprengt grop (3x3 m) i en fjellknaus med tippvolum på ca. 15 m3. Ingen opplysninger om den tidligere aktiviteten foreligger. Forekomsten er ubetydelig både i størrelse og gehalt. Mineraliseringen består av en smal (1-3 cm) pyritt-kobberkis åre i biotittskifer (prøve .01) i tilknytning til feltspatrik (amazonitt) pegmatitt som også fører svak sulfiddisseminasjon (.02). Åra har retning 70º/55º og skjærer foliasjonen i biotittskiferen (48º/70º). Biotittskiferen er svært rustfarget og har mange konkordante kvartsslirer/-årer. Kontaktsonen til pegmatitten innerst i gropa er svært glimmerrik og har retning 30º/80º. |
Fieldsamples |
Sample No. | Sample type | Miscellanrous | ||||
AA0130.01 | Bedrock |
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AA0130.02 | Bedrock |
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NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
from |
Deposit Area 4213 - 018 Langang |
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# |
AA0130.01 | Bedrock | 907 | 87 | 21 | 359 | 379 | 1.2 | 23.0 |
AA0130.02 | Bedrock | 434 | 72 | 12 | 26 | 32 | .3 | 7.0 |
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Sample No. | Pt# | Pd# | As* | Cd* | Ba* | Mo* | Sb* | Bi* | S% |
AA0130.01 | 1.0 | 15.0 | 50 | .7 | 36 | 39.00 | 2 | 2 | 18.30 |
AA0130.02 | 1.0 | 1.0 | 1 | .1 | 182 | 9.00 | 4 | 3 | 1.31 |
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Sample No. | V* | Cr* | Mn* | Fe% | Th* | U* | W* | Sr* | La* |
AA0130.01 | 80 | 76 | 513 | 26.51 | 2.00 | 13.00 | 3 | 6.0 | 16.00 |
AA0130.02 | 62 | 55 | 165 | 4.62 | 5.00 | 4.00 | 2 | 8.0 | 15.00 |
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Sample No. | B* | ||||||||
AA0130.01 | 2 | ||||||||
AA0130.02 | 3 |
The fact sheet was created on 05.05.2024 |
Questions or comments regarding the fact sheet can be emailed to: ressursdatabaser@ngu.no |
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