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Cumengeite

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SKY525500

Cumengeite

Type Locality

Description Tabs

Description
Locality: 
Amelia Mine, Boleo, Baja California Sur, Mexico
Class: 
Crystal Group/Cluster
Size Range: 
Micromount (under 1cm)
Size: 
0.4 × 0.4 × 0.3 cm
Description

Nice and classic specimen of deep blue cumengeite from the most famous locality for this mineral, the Boleo District, that is also the type locality. The crystal has the typical cubooctahedral form.
For more info the excellent article in Mineralogical Record vol.29, number 1, 1998.

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

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