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Calcite On Quartz

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Calcite On Quartz

Description Tabs

Description
Locality: 
Geevor Mine, Cornwall, United Kingdom
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2 × 2 cm
Description

A group of two quartz crystals covered on one side with crystalline dolomite coated with fine chlorite and in turn a rosette of cream coloured calcite crystals to 8 mm.

From the Coronation Lode.

Pretty specimen.

Mineral Data
What's on the rock

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Quartz

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