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Manganoan Calcite & Boulangerite

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AST796035

Manganoan Calcite & Boulangerite

Fluorescent

Description Tabs

Description
Locality: 
Olympiada Mine, Cassandra Mines, Aristotelis, Chalkidiki, Central Macedonia, Greece
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
8.5 × 13 × 3.5 cm
Description

Groups of lustrous scalenohedral manganoan calcite crystals partly colored gray to dark gray by boulangerite inclusions.Quite rare from this mine known only from a few old finds. 

Mineral Data
What's on the rock

Manganoan Calcite

Variety Of: 

Calcite

Formula: 
CaCO3
Strunz: 
5.AB.05
Hardness: 
3.0
Formula: 
(Ca,Mn)CO3
Hardness: 
0.0

Boulangerite

Formula: 
Pb5Sb4S11
Strunz: 
2.HC.15
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0
Colour: 
Lead grey
Streak: 
Brownish
Type Locality: 
Molières, Gard, Languedoc-Roussillon, France

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