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Bø Mine, Bø-grenda, Valle, Aust-Agder, Norway

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Latitude & Longitude (WGS84): 59° 10' 39'' North , 7° 30' 55'' East
Latitude & Longitude (decimal): 59.17755,7.51532
Other regions containing this locality:Scandinavia
Köppen climate type:Dfc : Subarctic climate
Name(s) in local language(s):Bøgruva, Bø-grenda, Valle kommune, Aust-Agder fylke, Norge

Found in 1826 and first claimed by T.S. Heyerdahl in 1831.

Ettner (2001) writes that there have been at least two periods of mining.

The first known period is 1844-45, with a production of 1281 "Tdr" (barrels ore (ca. 500 tons ore) was produced containing 10-12% copper.

The mine was 30 to 50 m deep.

Mining attempts were also made by Sætesdalen Kobberværk in 1863 and 1888.

From 1915 to 1918 the mine was operated by G.A. Henriksen & Co (renamed to Sørlandske Bergindustri in 1918).

The mine produced:
337 tons of export ore with 10-13% copper
1493 tons of washing ore with 3-5% copper

The mine employed up to 15 men for mining, and an unspecified number of children for hand-picking the ore.

The mine was abandoned on the 1st of August 1918.

In 1971 A/S Sulfidmalm drained and investigated the mine.

Etnner (2001) reports finds of gold of up to 1,62 g/t.

The mineralisation occurs in amphibolite schist, in the contact zone with a granite. In a zone of up to 0,5 to 1 meter immediately below the hanging wall granite, the mineralized zone is found.

Chalcopyrite and bornite are the main ore minerals.

NGU: "MALMDATABASEN Forekomstområde 940 - 003".

The NGU calls this locality "Knutshus" (The house of Knut).

Coordinates © Kartverket -

Mineral List

17 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

541 - 2500 Ma

ID: 3186372
Proterozoic crystalline metamorphic rocks

Age: Proterozoic (541 - 2500 Ma)

Lithology: Granitoid gneiss; orthogneiss/paragneiss

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

541 - 1000 Ma

ID: 3135658
Proterozoic III granite

Age: Neoproterozoic (541 - 1000 Ma)

Lithology: Granite

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Winsnes, H. F. (1961): Rapport fra besøk ved Hamre-Gruva og Bø-Gruva i Setesdal. Bergvesenets rapport BV 3810.
Nordrum, F.S. & van der Wel, D. (1981): Mineral-, stein og- ertsforekomster innen kartblad Sauda (1:250 000). Norges Geologiske Undersøkelse. 336, 58p. [p.23]
Ettner, D.C., (2001): Preliminary findings report for the Mandal - Ustaoset fault zone precious metals exploration project. Bergvesenetrapport nr 4775. pp. 19-20.

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