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Gahnite In Quartz

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PJM39835

Gahnite In Quartz

Ex Joe Blackwell Collection

Description Tabs

Description
Locality: 
Southern Operations Mine, Broken Hill, Yancowinna County, New South Wales, Australia
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2 × 3.2 × 2.7 cm
Largest Crystal: 
1.60cm
Description

New Broken Hill Consolidated Mines, also known as the NBHC Mineprovides us from the 15 level, a group of individual dark blue green gahnite crystals in a bluish white quartz.

Between the quartz and gahnite there is a light layer if waxt sericite

Mineral Data
What's on the rock

Gahnite

Formula: 
ZnAl2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
7.5 - 8.0
Streak: 
Grey
Type Locality: 
Falun mine, Falun, Dalarna, Sweden

Quartz

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

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