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Prehnite & Quartz

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FRN181705

Prehnite & Quartz

Description Tabs

Description
Locality: 
Qiaojia County, Zhaotong Prefecture, Yunnan Province, China (Peoples Republic)
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.2 × 3.5 × 3.5 cm
Largest Crystal: 
1.60cm
Description

Cluster of transparent gemmy quartz crystal associated with greenish botryoidal crystallized prehnite crystals.

Mineral Data
What's on the rock

Prehnite

Formula: 
Ca2Al2Si3O10(OH)2
Strunz: 
9.DP.20
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Karoo dolerites, Cradock, Chris Hani District, Eastern Cape Province, South Africa

Quartz

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