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Dufrenoysite - Lengenbach Quarry, Fäld, Binn Valley, Wallis, Switzerland (Type Locality) (#:MINS9186)

Group of elongated gray-metallic crystals of Dufrenoysite up to 4 mm long on dolomite matrix.A classic.

Formula :
Pb2As2S5
System: monoclinic Hardness:3 Rarity:rare
Strunz id:II/E.18-10 - SULFIDES
Name origin: Named by Augustin Alexis Damour in 1845 in honor of Ours Pierre Armand Petit Dufrenoy [September 5, 1792 Sevran, Seine-et-Oise, France - March 20, 1857 Paris, France], Professor of Mineralogy in the École des Mines, Paris. The mineral dufrénite is also named in his honor.

Specimen weight:35 gr.
Crystal size:Up to 4 mm
Overall size: 30mm x 25 mm x 25 mm




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Dufrenoysite - Lengenbach Quarry, Fäld, Binn Valley, Wallis, Switzerland (Type Locality)

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