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Prehnite On Amethyst With Hematite Inclusions

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CLB216838

Prehnite On Amethyst With Hematite Inclusions

New Discovery

Description Tabs

Description
Locality: 
Goboboseb Mountains, Brandberg, Dâures, Erongo Region, Namibia
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 2.6 × 2.4 cm
Largest Crystal: 
4.80cm
Description

From the new find of exceptional apple-green prehnite crystal sheaves on quartz comes this exceptional phantom amethyst crystal with a larger, apple-green prehnite crystal combo on the 'belly' and a lot of pale green, partly free-standing prehnite crystals on the back. The phantom is smoky in the lower part and amethyst-purple in the tip. In the clear part you can see some of those hematite inclusions (and I'm still not sure if there's not brookite involved). There are also some other, colorless crystals included which I cannot figure out yet.

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

Amethyst

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0
Colour: 
Purple

Hematite

Formula: 
Fe2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
5.0 - 6.0

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