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Quartz Psm Calcite

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PDM710456

Quartz Psm Calcite

Pseudomorph

Description Tabs

Description
Locality: 
Risco Faneque, Agaete, Gran Canaria, Canary Islands, Spain
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 2.2 × 2.4 cm
Description

Very acute scalenohedral crystal of calcite coated by a crust of lustrous quartz microcrystals. This pseudomorph is a true perimorph, cause both minerals are still present.

Self-collected in November 2009.

Mineral Data
What's on the rock

Quartz

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

Calcite

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

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