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Milarite Quartz & Apatite

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CLB181049

Milarite Quartz & Apatite

ex collection G. Hartung
Classic Locality

Description Tabs

Description
Locality: 
Uri, Switzerland
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.7 × 6 × 4.9 cm
Description

The tip of a waterclear milarite crystal on also waterclear rock crystal (more milarite hidden ?) + a rather big, double-terminated elongated apatite crystal (or is it another milarite?). Micro-crystals of dark green brookite on the backside.

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Apatite

Synonym Of: 

Chlorapatite

Formula: 
Ca5(PO4)3Cl
Strunz: 
8.BN.05
Hardness: 
5.0

Fluorapatite

Formula: 
Ca2Ca3(PO4)3F
Strunz: 
8.BN.05
Hardness: 
5.0

Hydroxylapatite

Formula: 
Ca5(PO4)3(OH)
Strunz: 
8.BN.05
Hardness: 
5.0
Crystal System: 
Hexagonal
Hardness: 
5

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