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Bavenite & Opal On Smoky Quartz

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SMM811782

Bavenite & Opal On Smoky Quartz

Type Locality

Description Tabs

Description
Locality: 
Seula Mine, Mount Camoscio, Verbano-Cusio-Ossola Province, Piedmont, Italy
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3 × 2 cm
Description

Silky-white, radial groups of acicular crystals of bavenite and  glassy colorless, strongly green  opal (under UV) stay on a smoky quartz crystal. Type locality for bavenite.

Boxed with Label
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

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Streak: 
White

Smoky Quartz

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0

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