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Pharmacosiderite

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PDM741854

Pharmacosiderite

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Description
Locality: 
Elba Island, Livorno Province, Tuscany, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.5 × 2 cm
Description

Gemmy olive green to yellowish cubic crystals of pharmacosiderite with very good vitreous lustre, covering an iron rich matrix.

It comes with three old labels, one from the “Istituto Tecnico Forli”.

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

Seller Information

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