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Quartz Psm Aragonite & Calcite

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PDM690180

Quartz Psm Aragonite & Calcite

Pseudomorph

Description Tabs

Description
Locality: 
El Risco, Gran Canaria, Las Palmas Province, Canary Islands, Spain
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.8 × 5.5 × 3.6 cm
Largest Crystal: 
4.00cm
Description

Hollow hexagonal “tubes” of greenish quartz that have replaced aragonite crystals of 4 cm. These “tubes” are terminated at one side, open at the base, and are overgrown by thick white calcite crystals. The group is covered by a thin layer of white perimorphic quartz.

Found in 03/2018 by Willy Vanderwaal.

Mineral Data
What's on the rock

Quartz

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

Aragonite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.15
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Type Locality: 
Gallo river, Molina de Aragón, Guadalajara, Castile-La Mancha, Spain

Calcite

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

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