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Topaz & Quartz On Aquamarine

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SMS1155954

Description Tabs

Description
Locality: 
Bergsig Farm 167, Omaruru, Erongo Region, Namibia
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.9 × 1.8 × 0.8 cm
Weight: 
2.52gr
Description

From finds in 2014, the specimen is made up of single aquamarine crystal with tiny topaz crystals attached towards the base. The aquamarine is in a lovely blue grey colour and with a slight tapering towards the termination.

Mineral Data
What's on the rock

Topaz

Formula: 
Al2(SiO4)(F,OH)2
Strunz: 
9.AF.35
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
8.0
Streak: 
White

Quartz

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

Aquamarine

Variety Of: 

Beryl

Formula: 
Be3Al2(Si6O18)
Strunz: 
9.CJ.05
Hardness: 
7.5 - 8.0
Formula: 
Be3Al2Si6O18
Hardness: 
0.0
Colour: 
Blue
Streak: 
White

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