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Amethyst & Andradite On Hedenbergite

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PMN743233

Amethyst & Andradite On Hedenbergite

Description Tabs

Description
Locality: 
Huanggang Mine, Hexigten Banner, Chifeng City, Inner Mongolia, China (Peoples Republic)
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
6 × 9.2 × 5.5 cm
Largest Crystal: 
2.00cm
Weight: 
311.00gr
Description

An attrative combination specimen that can only come form one location - very distinctive for the mine. Wilst many quartzes from the mine are included with hedenbergite, this one is actually amethyst, but still stacked in that typical way. The flat and blocky hedenbergite crystals are partiaclly covered by lustrous andradite. A striking display specimen with no damage to report. Please ask if you would like to see a video.

Mineral Data
What's on the rock

Amethyst

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0
Colour: 
Purple

Andradite

Formula: 
Ca3Fe3+2(SiO4)3
Strunz: 
9.AD.25
Crystal System: 
Isometric
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Drammen, Buskerud, Norway

Hedenbergite

Formula: 
CaFe2+Si2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.15
Hardness: 
5.5 - 6.5
Type Locality: 
Mormorsgruvan, Tunaberg Cu-Co Ore Field, Tunaberg, Nyköping, Södermanland, Sweden