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Plancheite With Calcite

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PDM786132

Plancheite With Calcite

Description Tabs

Description
Locality: 
Kamoya, Kambove, Haut-Katanga, DR Congo
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 2.2 × 1 cm
Description

Crust of light blue plancheite with acicular crystals and a botryoidal surface because it covers an aggregate of scalenohedral calcite. Aesthetic piece from the Kamoya mine, locality that is rarely represented in collections.

Old specimen, perfectly located because it was collected before 1968 by Martíal Borzee, a Belgian engineer to Congo.

Mineral Data
What's on the rock

Plancheite

Formula: 
Cu8(Si8O22)(OH)4·H2O
Strunz: 
9.DB.35
Crystal System: 
Orthorhombic
Hardness: 
6.0
Type Locality: 
Sanda carriere (Sanda quarry; Sanda Mine), Mindouli, Mindouli District, Pool Department, Republic of Congo (Brazzaville)

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

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