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Gold On Chalcopyrite & Sphalerite

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PDM923766

Gold On Chalcopyrite & Sphalerite

Classic Locality

Description Tabs

Description
Locality: 
Daikoku, Chichibu, Nakatsugawa, Saitama Prefecture, Honshu Island, Japan
Class: 
Crystals on Matrix
Size Range: 
Micromount (under 1cm)
Size: 
0.3 × 0.2 × 0.1 cm
Description

Very aesthetic and aerial crystallized wire of gold, of distinctive colour and superb lustre. The matrix is black sphalerite and euhedral golden crystallized yellow chalcopyrite of green reflexes. Gold in matrix from Japan is scarce nowadays in the market, and this piece is a superb, representative specimen from this classic Japanese locality.

Old specimen, acquired in 1950's, it was from Ing. Felix Azpilicueta Viguera, former mayor of San Sebastian (Spain) in the late 1940’s.

Combine specimens to reduce shipping costs!.

Mineral Data
What's on the rock

Gold

Formula: 
Au
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0

Sphalerite

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

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