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Pharmacosiderite

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WND813494

Pharmacosiderite

Classic Locality

Description Tabs

Description
Locality: 
St Day United Mines, St Day, Gwennap, Cornwall, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.1 × 2.5 × 1.5 cm
Description

Numerous of well developed, sharp and lustrous cubes of pharmacosiderite on matrix. They are partially transparent and brown in colour. A good piece.

Mineral Data
What's on the rock

Pharmacosiderite

Formula: 
KFe3+4(AsO4)3(OH)4·6-7H2O
Strunz: 
8.DK.10
Hardness: 
2.5
Streak: 
white
Type Locality: 
Carharrack Mine, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK
Wendel Minerals

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