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Brochantite & Chrysocolla

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RBM220417

Brochantite & Chrysocolla

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Description
Locality: 
Los Azules Mine, Quebrada San Miguel, Copiapo, Atacama Region, Chile
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.7 × 4.2 × 3 cm
Description

Perfect, robust and hardy crystals of brochantite accompanied by a drusy of chrysocolla on matrix.

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...

Chrysocolla

Formula: 
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (x < 1)
Strunz: 
9.ED.20
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.5

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