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Bournonite With Pyrite

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QRI931486

Bournonite With Pyrite

Ex coll. Lehmann (CH)
Classic Locality

Description Tabs

Description
Locality: 
Infiernillos Mine, Canutillos, Machacamarca, Saavedra Province, Potosi Department, Bolivia
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.9 × 3.4 × 2.7 cm
Largest Crystal: 
0.30cm
Weight: 
82.00gr
Description

Intriguing miniature consisting of complex fresh pyrite, with associated a few bournonite cogwheels. Some very minor sphalerite is present as well.

Contrasftul and in good quality. Scarcely seen from Infiernillos nowadays.

This is a specimen from the Swiss collection Lehmann, and it dates back to the late 80s.

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

Pyrite

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

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