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Brackebuschite & Coronadite

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TPX858089

Brackebuschite & Coronadite

Rare Mineral

Description Tabs

Description
Locality: 
María Josefa Mine, Rodalquilar, Níjar, Almería, Andalusia, Spain
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 1.5 × 1.3 cm
Weight: 
5.00gr
Description

Very interesting specimen of  brackebuschite & coronadite on alunite matrix. With a powerful magnifying glass I am sure that other typical minerals of this site can be observed. The specimens of this gold mine are much appreciated by the micromounts collectors.

Mineral Data
What's on the rock

Brackebuschite

Formula: 
Pb2Mn3+(VO4)2(OH)
Strunz: 
8.BG.05
Crystal System: 
Monoclinic
Hardness: 
4.0 - 5.0
Streak: 
Yellow
Type Locality: 
Venus Mine, Venus Pb-Zn deposit, El Guaico district, Sierra de Córdoba, Punilla Department, Córdoba, Argentina

Coronadite

Formula: 
Pb(Mn64+Mn23+)O16
Strunz: 
4/D.08-70
Crystal System: 
Monoclinic
Hardness: 
4½ - 5
Colour: 
Dark gray, black
Type Locality: 
Horseshoe Mine, Coronado Mine, Coronado vein, Copper Plate Gulch, Copper Mountain District, Greenlee County, Arizona, USA
Isostructural with: 
Cryptomelane
Ferrihollandite
Hollandite
Manjiroite
Strontiomelane

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