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Boulangerite Rhodochrosite Sphalerite Quartz & Gypsum

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AST661641

Boulangerite Rhodochrosite Sphalerite Quartz & Gypsum

Classic Locality

Description Tabs

Description
Locality: 
Madem-Lakkos Mine, Chalkidiki Prefecture, Central Macedonia, Greece
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 6 × 3 cm
Description

Fine and old specimen of acicular hair like boulangerite crystals in quartz cavity.Specimen also holds pale pink to brown rhodochrosite crusts in front and a mix of sphalerite with gypsum crystals at the back. Boulangerite is very stable and specimen safe for packing and post without damage.

Mineral Data
What's on the rock

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

Rhodochrosite

Formula: 
MnCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Cavnic Mine (Kapnikbánya), Cavnic (Kapnic; Kapnik), Maramureș Co., Romania

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Streak: 
White.

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