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Barbosalite & Phosphosiderite

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BCK722607

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: 
2.8 × 2.3 × 1.8 cm
Description

You are bidding on a fantastic sample from the Martin Jensen collection with exceptional, well-formed crystals of barbosalite with classic striated phosphosiderite crystals. These are without a doubt the best barbosalite crystals ever found and this specimen must be seen in person to be fully appreciated. Collected by Martin in 2011. 

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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