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Natroalunite & Antlerite

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CR200757

Natroalunite & Antlerite

Rare Mineral

Description Tabs

Description
Locality: 
Chuquicamata Mine, Chuquicamata, Calama, El Loa Province, Antofagasta Region, Chile
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.4 × 2.9 × 1.1 cm
Description

Pale yellow crystallized natroalunite with deep green antlerite crystals on matrix.

Ex Franz Bauer collection and label.

Mineral Data
What's on the rock

Natroalunite

Formula: 
NaAl3(SO4)2(OH)6
Strunz: 
7.BC.10
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Red Mountain District, Ouray Co., Colorado, USA

Antlerite

Formula: 
Cu3(SO4)(OH)4
Strunz: 
7.BB.15
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
3.5
Type Locality: 
Antler Mine (Antler Gold Mine; Spuyten Duyvel Mine), Arrastra Mt., Hualapai District, Hualapai (Hualpai) Mts, Mohave Co., Arizona, USA