Bjässhöjden (Kämpetorp), Hjulsjö, Hällefors, Västmanland, Sweden
|Latitude & Longitude (WGS84):||59° 48' 26'' North , 14° 50' 35'' East|
|Latitude & Longitude (decimal):||59.80749,14.84327|
|Other regions containing this locality:||Scandinavia|
|Köppen climate type:||Dfc : Subarctic climate|
|Name(s) in local language(s):||Bjässhöjden (Kämpetorp), Hjulsjö|
The first (Palaeoproterozoic) magnesite deposit found in the Bergslagen area. Occurs in carbonates at the contact between metabasite (gabbro) and acid metavolcanics. The deposit, composed of 5–20 m thick horizons was formed by replacement of a carbonate precursor through hydrothermal alteration, induced by the emplacement of the gabbro intrusion.
Cordierite occurs in metasomatised felsic metavolcanic rock; hornblende and plagioclase at the contact to the metagabbro.
Irregularly shaped iron-oxide mineralizations occur at the contact metagabbro-metavolcanics and consist of massive, fine-grained magnetite with minor chalcopyrite and pyrite and occasional coarse-grained, dark green hornblende.
Situated in the eastern part of the Hjulsjö area between Vasselsjö and Salbosjön; SW of Kopparberg.
12 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
1800 - 2050 Ma