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Atacamite Olivenite Halloysite & Chrysocolla

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ESM718785

Atacamite Olivenite Halloysite & Chrysocolla

Description Tabs

Description
Locality: 
La Farola Mine, Cerro Pintado, Tierra Amarilla, Copiapó Province, Atacama Region, Chile
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
2 × 6 × 4 cm
Description

Lustrous dark green atacamite crystals with botryoidal white halloysite aggregates with small green olivenite needles and blue chrysocolla

Mineral Data
What's on the rock

Atacamite

Formula: 
Cu2(OH)3Cl
Strunz: 
3.DA.10a
Crystal System: 
Orthorhombic
Hardness: 
3.0 - 3.5
Type Locality: 
Atacama Region, Chile

Olivenite

Formula: 
Cu2(AsO4)(OH)
Strunz: 
8.BB.30
Crystal System: 
Orthorhombic
Hardness: 
3.0
Type Locality: 
Carharrack Mine, St Day United Mines (Poldice Mines), Gwennap, Camborne - Redruth - St Day District, Cornwall, England, UK

Halloysite

Group Parent: 
Kaolinite-Serpentine Group

Chrysocolla

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