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Aragonite & Calcite

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PDM658859

Aragonite & Calcite

Description Tabs

Description
Locality: 
La Union, Murcia, Spain
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 4.3 × 2.7 cm
Description

White spheroidal aggregates of rhombohedral calcite crystals overgrown by transparent acicular crystals of aragonite. Self-collected in 2009, this is one of the biggest we extracted.

Mineral Data
What's on the rock

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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