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Calcite Anatase Pyrite & Tourmaline

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SER1172364

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Description
Locality: 
Beura Quarries, Beura-Cardezza, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 2.1 × 2.1 cm
Description

some groups of black lustrous anatase on quartz with a cluster of white calcite hosting tiny cubes of pyrite ; wonderful 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

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...

Pyrite

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

Tourmaline

Formula: 

A(D3)G6(T6O18)(BO3)3X3Z

Crystal System: 
Trigonal
Hardness: 
7

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Start 24 Mar 18:00
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