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Calcite & Chalcophanite

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TPX1028485

Calcite & Chalcophanite

Classic Locality

Description Tabs

Description
Locality: 
Herculano Mine, El Puntal, Campos de Golf, Atamaría, Cartagena, Murcia, Spain
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 3.3 × 2.8 cm
Weight: 
35.00gr
Description

Group of calcite crystals with a tan color due to internal inclusions of manganese oxides, mostly chalcophanite. from an emblematic mine in the Sierra de Cartagena in Murcia, Spain.

Mineral Data
What's on the rock

Calcite

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

Chalcophanite

Formula: 
(Zn,Fe,Mn)Mn3O7·3H2O
Strunz: 
4.FL.20
Crystal System: 
Trigonal
Hardness: 
2.5
Type Locality: 
Passaic pit (Marshall Mine; Passaic Mine), Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA

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