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Bromargyrite & Coronadite

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SMM859000

Bromargyrite & Coronadite

Description Tabs

Description
Locality: 
Schöne Aussicht Mine, Dernbach, Neuwied, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.5 × 3 × 2 cm
Description

Some yellow octahedral crystals of bromargyrite stay in vugs coated of velvet black crystalline coronadite. Cute specimen.

Mineral Data
What's on the rock

Bromargyrite

Formula: 
AgBr
Strunz: 
3.AA.15
Hardness: 
2.5
Type Locality: 
Plateros, Zacatecas, Mexico

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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