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Olden Silver Mine, Offerdal, Krokom, Jämtland, Sweden

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Latitude & Longitude (WGS84): 63° 47' 51'' North , 13° 28' 49'' East
Latitude & Longitude (decimal): 63.79760,13.48052
Other regions containing this locality:Scandinavia
Köppen climate type:Dfc : Subarctic climate
Name(s) in local language(s):Oldens silvergruva


There are several sulphide bearing quartz-veins within the Offerdal parish, one is located on the western slope of the Oldfjället. Mined already in the middle of 17th century but also later in the 19th. Cronstedt visited the site in 1756 and said that " the ore aint either rich (in silver) or concentrated enough".
In spite of his opinion, a Swedish finance group formed in 1826 in order to produce lead. An international group made in 1840 another effort& also a new one in 1870. According to Bredberg the galena should contain ~775 gr/ton Ag.

Mineral List


8 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 Macrostrat.org

Statherian
1600 - 1800 Ma



ID: 2636390

Age: Statherian (1600 - 1800 Ma)

Description: Caledonian orogen; Jämtlandian, Offerdal and Särv Nappes

Lithology: Acid volcanic or subvolcanic rock and metamorphic equivalents

Reference: Bergman, S., M.B. Sephens, J. Andersson, B. Kathol, T. Bergman. Sveriges berggrund, skala 1:1 miljon. Sveriges geologiska undersökning K 423. [95]

Paleoproterozoic
1600 - 2500 Ma



ID: 637965
Igneous: extrusive; Extrusive: felsic

Age: Proterozoic (1600 - 2500 Ma)

Description: Northern Europe, Caledonian Orogen (Northern Europe, undivided)

Comments: Orogen, fold-thrust belt, folded region; Koistinen et al., 2001; Sigmond, 2002; Solli, unpublished compilation, 2007-08; Bergman et al., unpublished revisions, 2007-08

Lithology: Rhyolite, trachyte, leptite, granitic gneiss

Reference: J.C. Harrison, M.R. St-Onge, O.V. Petrov, S.I. Strelnikov, B.G. Lopatin, F.H. Wilson, S. Tella, D. Paul, T. Lynds, S.P. Shokalsky, C.K. Hults, S. Bergman, H.F. Jepsen, and A. Solli. Geological map of the Arctic. doi:10.4095/287868. Geological Survey of Canada Map 2159A. [2]

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



This page contains all mineral locality references listed on mindat.org. 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 mindat.org 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.

References

Tegengren, F.R (1910): Undersökningar ang. malminmutningarna i närheten av den s.k. Inlandsbanan mellan Orsa och Pite Älfdal. Sveriges Geologiska Undersökning serie C 234.



 
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