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Holmtjärn, Stora Tuna, Borlänge, Dalarna, Sweden

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Latitude & Longitude (WGS84): 60° 21' 31'' North , 15° 15' 39'' East
Latitude & Longitude (decimal): 60.35889,15.26096
GeoHash:G#: u6dz77bxy
Other regions containing this locality:Scandinavia
Köppen climate type:Dfc : Subarctic climate
Name(s) in local language(s):Holmtjärn


Located 3 km SO of Idkerberget,and N of Rämshyttan railway station.
Coarse granite pegmatite, locally enriched in REE-minerals.


Mineral List


7 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

Paleoproterozoic
1600 - 2500 Ma



ID: 637682
Igneous: extrusive; Extrusive: intermediate

Age: Proterozoic (1600 - 2500 Ma)

Description: Northern Europe, Svecofennian and Lapland-Kola orogens

Comments: Orogen, fold-thrust belt, folded region; Koistinen et al., 2001; Sigmond, 2002; Solli, unpublished compilation, 2007-08; Bergman et al., unpublished revisions, 2007-08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

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]

Paleoproterozoic
1600 - 2500 Ma



ID: 3185452
Paleoproterozoic intrusive rocks

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Intrusive igneous rocks

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]

Paleoproterozoic
1600 - 2500 Ma



ID: 3157968
Proterozoic I granodiorite-diorite

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Major:{granodiorite-diorite group}, Minor{granite,syenite-monzonite group,meta-granodiorite-diorite group}

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]

Orosirian
1800 - 2050 Ma



ID: 2634416

Age: Orosirian (1800 - 2050 Ma)

Description: Svecokarelian orogen; Bergslagen lithotectonic unit

Lithology: Gabbro, dioritoid, dolerite, ultrabasic 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]

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

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
- Langhof, J. (1996): Thortveitite from granitic NYF pegmatites in Sweden. Geologiska Föreningens I Stockholm Förhandlinger 118, A54
- Sundius, N(1951): Kvarts, Fältspat och glimmer (in Swedish) SGU C 520

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