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Brochantite

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RBM198986

Brochantite

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Description
Locality: 
Los Azules Mine, Quebrada San Miguel, Copiapó Province, Atacama Region, Chile
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 4.3 × 3.2 cm
Description

Beautiful acicular crystals of brochantite, which are noted for their intense brightness. Another group of acicular crystals of lemon yellow color is seen with the naked eye, all over a layer of chalcoalumite on drusy of quartz . Apparently these are some kind yellowish crystals of uranium ore, because the samples were extracted from an area where brochantitas are combined with torbernite.

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...

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