Jacobsite

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Grey metallic Jacobsite forming crystalline masses within an unidentified white matrix from Långban, Filipstad, Värmland, Sweden. Långban is one of the world's most important mineralogical localities, playing host to over 320 different species - 78 of which were first discovered there! A nice miniature specimen of a mineral not often seen for sale from Långban. Jacobsite has the interesting property of being magnetic.