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Milarite

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CR27768

Milarite

Rare Mineral

Description Tabs

Description
Locality: 
Venero I Quarry, Cadalso de los Vidrios, Madrid, Spain
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.8 × 6 × 4.8 cm
Largest Crystal: 
0.60cm
Description

Extremely rich specimen with hundreds of small gemmy, waterclear milarite crystals on smoky quartz crystals.

Most of the milarite crystals are 1-2 mm large but there are also some larger crystals up to 6 mm on this beautiful specimen.

Mineral Data
What's on the rock

Milarite

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