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Cumengeite & Boleite

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CR192619

Cumengeite & Boleite

Rare Mineral

Description Tabs

Description
Locality: 
Amelia Mine, Boleo, Baja California Sur, Mexico
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.6 × 3.5 × 3.9 cm
Description

A historic and rich combination specimen with a super provenance from the Type Locality of cumengeite.Sparkly, gemmy, tetragonal, indigo-blue microcrystals of cumengeite are richly sprinkled on the massive anglesite matrix.

With small Boleite crystals all over the specimen.

Mineral Data
What's on the rock

Cumengeite

Formula: 
Pb21Cu20Cl42(OH)40·6H2O
Strunz: 
3.DB.20
Crystal System: 
Tetragonal
Hardness: 
2.5
Streak: 
Sky-blue
Type Locality: 
Santa Rosalía (El Boleo), Boleo District, Mun. de Mulegé, Baja California Sur (BC Sur), Mexico

Boleite

Formula: 
KPb26Ag9Cu24(OH)48Cl62
Strunz: 
3.DB.15
Crystal System: 
Isometric
Hardness: 
3.0 - 3.5
Type Locality: 
Santa Rosalía (El Boleo), Boleo District, Mun. de Mulegé, Baja California Sur (BC Sur), Mexico