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Plumbogummite & Mimetite

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SER586060

Plumbogummite & Mimetite

Description Tabs

Description
Locality: 
Ste Barbe Vein, Compagnie Minière des Montmins, Échassières, Allier, Auvergne-Rhône-Alpes, France
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.6 × 1.7 cm
Description

Several white to cream plumbogummite crystals on quartz with white mimetite

Mineral Data
What's on the rock

Plumbogummite

Formula: 
PbAl3(PO4)2(OH)5·H2O
Strunz: 
8.BL.10
Hardness: 
4.0 - 5.0
Type Locality: 
Huelgoat (Locmaria-Berrien), Finistère, Brittany, France

Mimetite

Formula: 
Pb5(AsO4)3Cl
Strunz: 
8.BN.05
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Treue Freundschaft Mine, Johanngeorgenstadt, Johanngeorgenstadt District, Erzgebirge, Saxony, Germany