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Birnessite

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PJM59050

Birnessite

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Description
Locality: 
El Chorrillo Mines, Pozuelo de Calatrava, Ciudad Real, Castilla La Mancha, Spain
Size Range: 
Miniature (4.5-7 cm)
Size: 
1.8 × 5 × 3.1 cm
Description

Dark brown to black crystalline birnessite from an unusual loaclity in Spain

Mineral Data
What's on the rock

Birnessite

Formula: 
(Na,Ca)0.5(Mn4+,Mn3+)2O4·1.5H2O
Strunz: 
4.FL.45
Crystal System: 
Orthorhombic
Hardness: 
1.5
Type Locality: 
Birness, Ellon, Buchan Grampian (Aberdeenshire), Scotland, UK
Earthstones Australia

Seller Information

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Seller's terms and conditions

All goods must be paid for prior to shipping, all bids are binding.