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English version | ||||
| MALMDATABASEN | |||||
| Forekomstområde 829 - 052 | |||||
| (Sist oppdatert 28.mar.2020) | |||||
Navn på deposit area : Åby |
| (Objekt Id : 0829,052,00,00) |
| Lokalisering |
| Fylke : | Telemark (08) | Kommune : | Kviteseid (0829) |
| Kart 1:50000: | Bandak (1513-1) | Kart 1:250000: | Skien |
| Markeringspunkt: | Lengdegrad: | 8.3002310 | Breddegrad: | 59.4842040 |
| EU89-UTM Zone 32 | (Coordinates IS confirmed) |
| X-koord: | 460363 m. | Y-koord: | 6594178 m. |
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| Materialtype |
| Hovedtype: | Basemetaller (Cu,Zn,Pb,Fe sulfider,As,Sb,Bi,Sn) | Subtype: | Kobber | |
| Element(s): | Cu Ag |
| Production |
| Activity: | Røsking | Reserves: | ||
| Prod. method: | Production: | |||
| Prod. status: | Volume of dump: |
| Betydning |
| Offentlig: | Little Importance (reg. 18.02.2015) |
| Economical: | Lite viktig , (Confirmed 24.nov.2006 by Jan Sverre Sandstad) |
Operations |
| From - To | Activity | Comments | |
| 1886 - 1887 | Pitting | ||
| 2006 - 2006 | Sampling | Company/Institution :NGU |
Mineralization |
| Era: | Proterozoic | Period: | Mesoproterozoic | |
| Dating: | Method: | |||
| Genesis: | Hydrotermal gang | Form: | Linse | |
| Main texture: | Sprekkefylling | Min. distribution: | Uregelmessig |
| Main grain size: | Finkornet (<1 mm) | Main alteration: |
| Strike/Dip: | 210 / 50 | 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: | Høydalsmo group | Formation: | Morgedal formation |
Mineralogy |
| Relationship | Mineral | Amount | |
| Gangue mineral | Quartz | Major mineral (>10%) | |
| Gangue mineral | Carbonate | Subordinate mineral (1-10%) | |
| Ore mineral | Bornite | Major mineral (>10%) | |
| Ore mineral | Chalcocite | Subordinate mineral (1-10%) | |
| Ore mineral | Digenite | Subordinate mineral (1-10%) | |
| Ore mineral | Idaite | Accessory mineral (<1%) |
Lithology: |
| Relationship | Rock | Origin | |
| Wall rock | Amfibolitt | Extrusive Original rock :Basalt |
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| Metamorphic facies :Amphibolite |
Structures |
| Location: | Type: | Orientation(360 gr.): | Relation to min.: | |
| Wall rock | Schistosity | Strike/Dip :16 / 75 | Syn-mineralisation ;...Effect :Modifies |
Opplysning(er) i fritekstformat |
| Fri tekst |
| Forekomsten ligger ca. 150 m sørvest for den lille gården Åby i tett granskog i en brattskråning. En dagskjæring med lengde på veggene 3x2 m med retning 278º er drevet inn mot et 8-10 m høyt stup i vest. Veggen i nord er 2 m høy. Forsøksdrift ble utført i 1887 (Dons 1963). Berggrunnen domineres av finkornet, grå amfibolitt. Den mest markerte struktur er kløv med orientering 16º/75º. Få, tynne karbonatlinser er parallelle denne kløven. Det er drevet på en noe uregelmessig, 2-5 cm bred kvarts+karbonatåre med retning omkring 210º/50º. Den fører aggregater og strenger av bornitt og mindre mengder kobberglans. Det er en ubetydelig forekomst. |
Bibliography: |
| From NGU's Reference Archive: |
| Dons, Johannes A. , 1963 |
| De prekambriske bergarter i Telemark, I. Gruber og skjerp innen gradeteigkart E36V Kviteseid. |
| ;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.216;1-80 pages |
| Abstract: | |
| Approximately 115 mines and claims have been examined in the years 1941-1961 during regional geological mapping of the Kviteseid quadrangle. The map area covers a part of the "Thelemark-Sætersdal ore province" established by prof. J.H.L. Vogt in 1886. The oldest mine in the area, opened in the year 1524, was worked for silver bearing chalcopyrite and bornite. Other mines have been worked for gold, native copper and silver, molybdenite, galena, arsenopyrite, bismuthinite. All the mines have long since been abandoned and most of the surface workings are overgrown and difficult to find. The 15 native copper and silver deposits (which also contain vanadium minerals) form a separate group. They are all situated along the contact between a sandstone and an overlying basalt, the ore being confined to the sandstone. Most of the other deposits are of Quartz vein type. In quartzites which cover the greatest part of the map area, most of the quartz veins are barren. The great abundance of ore minerals in quartz veins in basic lavas and basic sills may be due to favourable pH conditions in these rocks. The galena deposits are found within a limited area close to a penetrating granite. The ore mineral paragenese in some of the deposits may have been formed under hypothermal to mesothermal conditions whereas other possibly originated at lower temperatures. |
Fieldsamples |
| Sample No. | Sample type | Miscellanrous | ||||
| TE0107.01 | Bedrock |
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| NB! All analyse values are shown at the end of the printout.: |
Analyse Results |
| from |
| Forekomstområde 829 - 052 Åby |
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# |
| TE0107.01 | Bedrock | 19670 | -100 | -100 | 10 | 30 | 14.0 | 30.0 |
| ------------------ |
| Sample No. | As* | Cd* | Mo* | Sb* | Bi* | Cr* | Mn* | Fe% | W* |
| TE0107.01 | -100 | -10.0 | -10.00 | -10 | -100 | 10 | 1500 | 2.80 | -10 |
| ------------------ |
| Sample No. | Sr* | P* | Ca* | ||||||
| TE0107.01 | 80.0 | 0 | 5 |
| Faktaarket ble generert 13.06.2026 |
| Spørsmål eller kommentarer vedrørende faktaarket kan mailes til: ressursdatabaser@ngu.no |
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