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Quartz Psm Aragonite

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ESM827876

Quartz Psm Aragonite

Description Tabs

Description
Locality: 
Valle de las Plumas, Paso de Indios Department, Chubut Province, Argentina
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
9 × 8 × 8 cm
Description

Sharp clusters of red-brown aragonite crystals pseudomorphed by quartz

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