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Bournonite Calcite Pyrite & Quartz

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Bournonite Calcite Pyrite & Quartz

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: 
9 × 7 × 2.2 cm
Description

Bournonite crystals with disc shaped calcite and minor pyrite set on a bed of microcrystalline quartz.At the back side specimen is very rich in pyrite. Very fine old time classic from this locality.

Mineral Data
What's on the rock

Bournonite

Formula: 
PbCuSbS3
Strunz: 
2.GA.50
Hardness: 
2.5 - 3.0
Type Locality: 
Wheal Boys (Trewetha Mine; Old Trewetha Mine), Port Isaac, St Endellion, Wadebridge District, Cornwall, England, UK

Calcite

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

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

Quartz

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

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