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Anatase & Tourmaline

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SER1161179

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Description
Locality: 
Beura Quarries, Beura-Cardezza, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.1 × 2.6 × 3.4 cm
Description

several black lustrous large anatase crystals on gneiss with tourmaline

Mineral Data
What's on the rock

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...

Tourmaline

Formula: 

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

Crystal System: 
Trigonal
Hardness: 
7

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Start 31 Mar 18:00
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