Bø Mine, Bø-grenda, Valle, Aust-Agder, Norway
|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 - https://www.kartverket.no
17 valid minerals.
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 Macrostrat.org
541 - 2500 Ma
|Proterozoic crystalline metamorphic rocks|
Age: Proterozoic (541 - 2500 Ma)
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. 
541 - 1000 Ma
|Proterozoic III granite|