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Barbosalite & Phosphosiderite

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BCK714809

Barbosalite & Phosphosiderite

Martin Jensen collection
Rare Mineral

Description Tabs

Description
Locality: 
Bull Moose Mine, Custer, Custer County, South Dakota, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 2.5 × 1.4 cm
Description

You are bidding on an exceptional thumbnail specimen from the Martin Jensen collection with sharp, beautiful clusters of barbosalite crystals with striated, sometimes twinned pink phosphosiderite crystals with balls of mitridatite and/or wicksite with minor beraunite. Self collected by Martin on Feb. 14, 2011. This is an exceptional barbosalite sample from the locality and the crystals do not get any better!

Mineral Data
What's on the rock

Barbosalite

Formula: 
Fe2+Fe3+2(PO4)2(OH)2
Strunz: 
8.BB.40
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0
Type Locality: 
Sapucaia Mine (Proberil mine), Sapucaia do Norte, Galiléia, Doce valley, Minas Gerais, Brazil

Phosphosiderite

Formula: 
FePO4·2H2O
Strunz: 
8.CD.05
Hardness: 
3.5 - 4.0
Type Locality: 
Kalterborn Mine, Eiserfeld, Siegerland, North Rhine-Westphalia, Germany

Seller Information

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