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Sphalerite

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BSM84454

Sphalerite

ex Pearl Freeman Collection #X565

Description Tabs

Description
Locality: 
Casapalca Mine, Huarochiri Province, Lima Department, Peru
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 5 × 4.5 cm
Largest Crystal: 
2.50cm
Description

Needle quartz crystals interspersed with pyrite have grown over a light grey matrix.  Growing amongst and on the quartz are a number of sphalerite crystals and cleavages but to the rear of the specimen is a large (2.5cm) crystal of a strong orange brown colour.  It is slightly transparent and carries a number of small black sphalerite crystals as epitaxial growths.

Mineral Data
What's on the rock

Sphalerite

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

Pearl Freeman Collection

Wed, 2015-07-22 22:52 -- admin
Some History
Dates: 
Post War- 
2011
Type: 
Collector/Collection
Specialisms: 
Baryte, United Kingdom, Peru, Sulphides
About

Pearl and her husband Sid were enthusiastic mineral collectors for several decades; Pearl was also long time treasurer of the British...

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