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Conichalcite Olivenite & Arsenocrandallite

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AST657140

Conichalcite Olivenite & Arsenocrandallite

Description Tabs

Description
Locality: 
Christiana Mine, Kamariza, Agios Konstantinos, Lavrion District, Attiki Prefecture, Greece
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 3 × 2 cm
Description

A very nice conichalcite "geode" with conichalcite spheres and acicular olivenite crystals in cavity.Massive arsenocrandallite covers part of specimen's back side.Specimen is from a single find of this unique mineral formation done at Lavrion three years ago.All specimens disappeared shortly after find was known and nowdays are hardly available only from collections.

Mineral Data
What's on the rock

Conichalcite

Formula: 
CaCu(AsO4)(OH)
Strunz: 
8.BH.35
Crystal System: 
Orthorhombic
Hardness: 
4.5
Type Locality: 
Hinojosa del Duque, Córdoba, Andalusia, Spain

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

Arsenocrandallite

Formula: 
CaAl3(AsO4)2(OH)5·H2O
Strunz: 
8.BL.10
Crystal System: 
Trigonal
Hardness: 
5.5
Streak: 
white
Type Locality: 
Neubulach, Calw, Black Forest, Baden-Württemberg, Germany

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