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Quartz On Demantoid

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JYJ100949

Quartz On Demantoid

Description Tabs

Description
Locality: 
Antetezambato, Antsakoamanondro, Ambanja, Diana, Madagascar
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.3 × 1.2 cm
Largest Crystal: 
2.20cm
Description

An aggregate of double terminated quartz crystals on intense green demantoid. shows a little bit of matrix on the backside.

Mineral Data
What's on the rock

Quartz

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

Demantoid

Variety Of: 

Andradite

Formula: 
Ca3Fe3+2(SiO4)3
Strunz: 
9.AD.25
Hardness: 
6.5 - 7.0