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Sweden | |
| Holtstam, Dan, Langhof, Jörgen - Eds. (1999) LÄngban - The mines, their minerals, geology and explorers. Raster Förlag; Swedish Museum of Natural History, Stockholm. p.1-216. Gatedal, Kjell (n.d.) Personal Communication. |
| Ăstra VĂ€rmlands Mineral Society,LĂ„ngban,Sweden |
| Zakrzewski, M.A., Burke, E.A.J., Nugteren, H.W. (1980) Cobalt Minerals in the HĂ€llefors area, Bergslagen, Sweden: New occurences of costibite, paracostibite, nisbite and cobaltian ullmannite. The Canadian Mineralogist, 18 (2) 165-171 |
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| Nysten, Per (2004) Harstigen ett mineralogisk eldorado i Bergslagen [Harstigen - a mineral eldorado in Bergslagen]. Norsk Bergverksmuseum Skrift, 28. 5-13 Gatedal, Kjell (n.d.) Personal Communication. |
LĂ„ngban Mine, LĂ„ngban Ore District, Filipstad, VĂ€rmland County, Sweden