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Bavenite & Milarite

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MEX155827

Bavenite & Milarite

ex Luigi Chiappino collection
Classic Locality

Description Tabs

Description
Locality: 
Venero I Quarry, Cadalso de los Vidrios, Madrid, Spain
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.7 × 0.6 cm
Description

Very nice group of colorless, tabular bavenite crystals with just as colorless, hexagonal milarite crystals together on typical quartz matrix.

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

Milarite

Formula: 
K2Ca4Al2Be4Si24O60·H2O
Strunz: 
9.CM.05
Hardness: 
6.0
Type Locality: 
Giuv Valley, Tujetsch (Tavetsch), Vorderrhein Valley, Grischun (Grisons; Graubünden), Switzerland