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Quartz Psm Baryte

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MMM29283

Quartz Psm Baryte

Description Tabs

Description
Locality: 
Gravel Hill Mine, Perranzauloe, Cornwall, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 6 × 3 cm
Largest Crystal: 
0.90cm
Description

Many well defined barite crystals largest 9 mm completely altered to quartz on psilomelane, limonite and quartz matrix.

One of the better specimens collected underground in 1997 from a pillar in a large stope.

Mineral Data
What's on the rock

Quartz

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

Baryte

Formula: 
BaSO4
Strunz: 
7.AD.35
Hardness: 
3.0 - 3.5
Streak: 
White