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Fluorapophyllite Sphalerite & Spessartine

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GND36984

Fluorapophyllite Sphalerite & Spessartine

Classic Locality

Description Tabs

Description
Locality: 
Broken Hill, New South Wales, Australia
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.2 × 7 × 5.4 cm
Description

A large lump of ore containing a feast of crystallised species including well formed clear fluorapophyllite, unusual 'melted' and stepped black crystals of sphalerite with a mass of small pink to red gemmy spessartine crystals as well as some minor galena as modified octahedra and long blue apatite crystals.

All these occur as micro crystals and need a microscope for best viewing.

Mineral Data
What's on the rock

Fluorapophyllite

Synonym Of: 

Fluorapophyllite-(K)

Formula: 
KCa4(Si8O20)(F,OH)·8H2O
Strunz: 
9.EA.15
Hardness: 
4.5 - 5.0

Fluorapophyllite-(Na)

Formula: 
NaCa4(Si8O20)F·8H2O
Strunz: 
9.EA.15
Hardness: 
4.0 - 5.0

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

Spessartine

Formula: 
Mn2+3Al2(SiO4)3
Strunz: 
9.AD.25
Crystal System: 
Isometric
Hardness: 
6.5 - 7.5
Streak: 
White
Type Locality: 
Sommer quarry, Wendelberg, Haibach, Aschaffenburg, Spessart, Franconia, Bavaria, Germany
Gondwana Minerals
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