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RARE16B-152
Plumboferrite (type locality) with Hausmannite and Dolomite
Jakobsberg mine, Nordmark district, Filipstad, Varmland, Sweden
Miniature, 6.0 x 4.0 x 3.5 cm
Ex. Swedish Museum of Natural History
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An excellent micaceous specimen from the type locality, consisting of elongate, platy, subhedral crystals of gray-black plumboferrite up to 1.5 mm inter-grown with brown-black, fine-grained, granular hausmannite and localized, cream-colored, discontinuous bands of dolomite. Plumboferrite is a lead iron manganese oxide. The Jakobsberg mine is situated in the Jajobsberg iron-manganese ore field in Sweden and is the type locality for several mineral species. Swedish Museum of Natural History label. Ex. Paulo Matioli collection.

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