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Fluorite Beryl & Tourmaline

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MGR130302

Fluorite Beryl & Tourmaline

Description Tabs

Description
Locality: 
Erongo Mountains, Karibib, Erongo Region, Namibia
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.4 × 3.3 × 2 cm
Description

A well developed specimen with several dark modified fluorite crystals up to 17mm across and colourless beryl up to 17mm tall. The assemble is very good and the piece is undamaged. Field collected by the well known Austria collector Rudolf Planitzer.

Mineral Data
What's on the rock

Fluorite

Formula: 
CaF2
Strunz: 
3.AB.25
Crystal System: 
Isometric
Hardness: 
4.0
Streak: 
White
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Beryl

Formula: 
Be3Al2(Si6O18)
Strunz: 
9.CJ.05
Crystal System: 
Hexagonal
Hardness: 
7.5 - 8.0
Streak: 
White

Tourmaline

Formula: 
A(D3)G6(T6O18)(BO3)3X3Z
Crystal System: 
Trigonal
Hardness: 
7