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Bournonite With Quartz

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CLB48007

Bournonite With Quartz

Description Tabs

Description
Locality: 
Viboras Mine, Machacamarca, Saavedra Province, Potosi Department, Bolivia
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 4.3 × 5 cm
Largest Crystal: 
2.00cm
Description

The bournonite crystals from this locality range amongst the best of the species worldwide. This is a very aesthetic specimen combined with very interesting greenish quartz crystals (prase?).

Only some minor bournonite crystals show a little damage. Otherwise the specimen is excellent.

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

Quartz

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

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