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Amethyst & Stilbite

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RAF548359

Amethyst & Stilbite

Gem Crystal

Description Tabs

Description
Locality: 
Grootberg Mountain, Khorixas, Kunene Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
5.5 × 5.3 × 8 cm
Largest Crystal: 
2.90cm
Weight: 
204.00gr
Description

This is a stunningly beautiful specimen of dark mauve Amethyst crysals with a Stilbite Nodule nestled in the cavity. From Grootberg, Namibia....

Mineral Data
What's on the rock

Amethyst

Variety Of: 

Quartz

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

Stilbite

Synonym Of: 

Stilbite-Ca

Formula: 
NaCa4[Al9Si27O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0

Stilbite-Na

Formula: 
(Na,Ca,K)6-7[Al8Si28O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0
Hardness: 
3.5 - 4
Colour: 
White
Streak: 
White
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