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Realgar With Orpiment Galena Sphalerite & Quartz

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PCZ557833

Realgar With Orpiment Galena Sphalerite & Quartz

Description Tabs

Description
Locality: 
Quiruvilca, Quiruvilca District, Libertad Department, Peru
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12 × 7 × 5 cm
Description

A large representative piece of ore from a famous mine. This specimen has a good coverage of frosty quartz crystals up to 1.5 cm in length with spherical aggregates of nicely coloured orpiment scattered between. There are also areas up to 6 cm across solely consisting of orpiment. In a few places tiny areas of realgar are apparant. The matrix is mostly comprised of galena. A sizable, crystaline and complete ore specimen from a classic locality. 

Mineral Data
What's on the rock

Realgar

Formula: 
As4S4
Strunz: 
2.FA.15a
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0

Orpiment

Formula: 
As2S3
Strunz: 
2.FA.30
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0

Galena

Formula: 
PbS
Strunz: 
2.CD.10
Crystal System: 
Isometric
Hardness: 
2.5
Colour: 
Lead-grey
Streak: 
Lead-grey

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
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