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Bertrandite Bazzite Bavenite & Hingganite-(Y)

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SER939545

Bertrandite Bazzite Bavenite & Hingganite-(Y)

Type Locality

Description Tabs

Description
Locality: 
Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 5 × 3.1 cm
Description

a very rapresentative specimen for Baveno's quarries : a cluster of white, large (for the locality) bertrandite crystals hosts some blue bazzite crystals ; in another vug, albite covered by a carpet of bavenite blades and, in another vug, a good hingganite crystal (three beryllium minerals in this specimen)

Mineral Data
What's on the rock

Bertrandite

Formula: 
Be4(Si2O7)(OH)2
Strunz: 
9.BD.05
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 7.0
Type Locality: 
Petit-Port, Nantes, Loire-Atlantique, Pays de Loire, France

Bazzite

Formula: 
Be3Sc2(Si6O18)
Strunz: 
9.CJ.05
Crystal System: 
Hexagonal
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Seula mine (ex Montecatini quarry), Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy

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