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Phosphofibrite & Chalcosiderite

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SER203904

Phosphofibrite & Chalcosiderite

Description Tabs

Description
Locality: 
Silver Coin Mine, Valmy, Humboldt County, Nevada, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2 × 1.8 cm
Description

Some tiny, Yellow tufts of phosphofibrite on perhamite with green micro crystals of chalcosiderite

Mineral Data
What's on the rock

Phosphofibrite

Formula: 
K<0.5(Fe3+,Cu)8(PO4)6(OH)7·7H2O
Strunz: 
8.DJ.20
Hardness: 
4.0
Type Locality: 
Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany

Chalcosiderite

Formula: 
Cu(Fe3+,Al)6(PO4)4(OH)8·4H2O
Strunz: 
8.DD.15
Crystal System: 
Triclinic
Hardness: 
4.5
Type Locality: 
Phoenix United Mine, Minions, Linkinhorne, Liskeard District, Cornwall, England, UK
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