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Hedenbergite & Andradite

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RFJ886466

Hedenbergite & Andradite

Classic Locality

Description Tabs

Description
Locality: 
Sennin Mine, Waga, Iwate Prefecture, Honshu Island, Japan
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 5.5 × 5.2 cm
Description

Only the Hedenbergite crystals have a grey termination,nice in contrast to the greenish - grey Hedenbergite under it. Unusual combination,there is quite a clear border between the Andradite (with small crystals) and Hedenbergite.

Mineral Data
What's on the rock

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

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

Seller Information

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