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Danalite Fluorite Quartz & Tourmaline

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PJM128779

Danalite Fluorite Quartz & Tourmaline

Description Tabs

Description
Locality: 
Mount Cleveland Mine, Luina, Heazlewood, Waratah-Wynyard Municipality, Tasmania, Australia
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 6.8 × 4.7 cm
Description

Short clear quartz crystals cover almost all surfaces of this specimen and has a rich coverage of small orange danalite octahedra with small purple fluorite cubes and acicular tourmaline crystals in black dark green and bluish green colours. Both elbaite and schorl occur at this deposit as well as the rare tourmaline group member Luinaite OH. This is a nice sized handspecimen that is best appreciated with some magnification

Mineral Data
What's on the rock

Danalite

Formula: 
Fe2+4(Be3Si3O12)S
Strunz: 
9.FB.10
Crystal System: 
Isometric
Hardness: 
5.5 - 6.0
Type Locality: 
Rockport, Essex Co., Massachusetts, USA

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

Quartz

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

Tourmaline

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

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