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Brochantite & Murdochite

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RBM585331

Brochantite & Murdochite

Description Tabs

Description
Locality: 
Dos Adrianas Mine, Tierra Amarilla, Copiapó Province, Atacama Region, Chile
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 3.2 × 2.5 cm
Description

Colorfull green velvet of brochantite wiht micro crystals of murdochite over the acicular crystals. Another mineral such as linarite and chrysocolla accompanied the sample.

Mineral Data
What's on the rock

Brochantite

Formula: 
Cu4(SO4)(OH)6
Strunz: 
7.BB.25
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0
Type Locality: 
Mednorudyanskoye Cu Deposit, Nizhnii Tagil, Sverdlovskaya Oblast', Middle Urals, Urals Region, Russia...

Murdochite

Formula: 
PbCu6O8-x(Cl,Br)2x where x<=0.5
Strunz: 
3.DB.45
Crystal System: 
Isometric
Hardness: 
4.0
Colour: 
Black
Streak: 
Black
Type Locality: 
Mammoth-Saint Anthony Mine (Mammoth-St Anthony Mine; Mammoth Mine; St. Anthony Mine), St. Anthony deposit, Tiger, Mammoth District, Pinal Co., Arizona, USA

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