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Calcite Quartz Pyrite & Anatase

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SER1018132

Calcite Quartz Pyrite & Anatase

Description Tabs

Description
Locality: 
Val Toppa Mine, Pieve Vergonte, Ossola Valley, Verbano-Cusio-Ossola, Piedmont, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.1 × 5.1 × 2.1 cm
Description

a large matrix specimen features white blocky calcite crystals with green muscovite, tiny golden pyrite crystal groups, some quartz and several groups of electric blue anatase crystals ; very aesthetic indeed under scope !

Mineral Data
What's on the rock

Calcite

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

Quartz

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

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

Anatase

Formula: 
TiO2
Strunz: 
4.DD.05
Hardness: 
5.5 - 6.0
Type Locality: 
St Christophe-en-Oisans, Bourg d'Oisans, Isère, Rhône-Alpes, France...