Rare Quenselite (type locality) with Braunite and Calcite - image 1

Rare Quenselite (type locality) with Braunite and Calcite - image 2

Rare Quenselite (type locality) with Braunite and Calcite

Unknown Owner

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A rich, hefty cabinet specimen of braunite ore with calcite veinlets and abundant, well-formed, black, metallic, scintillating crystals of quenselite to 0.5mm. The mineral also occurs as dense, fine, granular massive aggregates along the fracture surface. Quenselite is a lead manganese oxide-hydroxide. The piece comes with Swedish Museum of Natural History and Paulo Matioli labels. From the type locality at Langban, Filipstad, Varmland, Sweden. Ex. Paulo Matioli collection.