|Latitude & Longitude (WGS84):||59° 52' 55'' North , 9° 58' 46'' East|
|Latitude & Longitude (decimal):||59.88222,9.97972|
|Other regions containing this locality:||Scandinavia|
|Köppen climate type:||Dfc : Subarctic climate|
|Name(s) in local language(s):||Glomsrudkollen gruver, Åmot, Modum kommune, Buskerud fylke, Norge|
Old mine run on chalcopyrite-pyrrhotite-sphalerite ore. In contact with metamorphic garnet-amphibole-epidote skarn.
In 1870 they started test-mining on sphalerite at Glomsrudkollen on Øståsen in southern Modum. Four or five men started this year the mining, and during one month they got 110 tons of black ore, but despite that they stopped the mining.
In 1899 a Belgian company started test-mining with 20 men. They mined 286 tons ore with 30-50% zinc, the mining ended by the end of the year. In 1907 once again they started mining, and the year after 56 persons worked in the mines.
In 1909 the rights was given to a German company.
The mining at Glomsrudkollen ended in 1921 and in 1928 the mines where sold to an other company, but the mining never started again.
The dumps outside the lower adit (Bunnstollen, see the map) is unfortunately nearly totally removed today used in road constructions. These dumps produced several interesting specimens in the 1970s-1980s.
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
51 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
|Silurian - Proterozoic|
419.2 - 2500 Ma
|Precambrian-Phanerozoic sedimentary rocks|
Age: to Silurian (419.2 - 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. 
|Mesoproterozoic - Paleoproterozoic|
1000 - 2500 Ma
|Proterozoic I quartzite|
Age: Proterozoic (1000 - 2500 Ma)
Description: undifferentiated metamorphic
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.