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Bavenite & Tourmaline

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SER769415

Bavenite & Tourmaline

ex Domenico Forloni collection

Description Tabs

Description
Locality: 
Pianasca Quarry, Villadossola, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.6 × 3.5 × 2.1 cm
Description

several clusters of white bavenite on calcite with dark green tourmaline crystals

Mineral Data
What's on the rock

Bavenite

Formula: 
Ca4Be2Al2Si9O26(OH)2
Strunz: 
9.DF.25
Crystal System: 
Orthorhombic
Hardness: 
5.5
Colour: 
White
Type Locality: 
Seula mine (ex Montecatini quarry), Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy

Tourmaline

Formula: 
A(D3)G6(T6O18)(BO3)3X3Z
Crystal System: 
Trigonal
Hardness: 
7