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Galena & Sphalerite

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RFJ1037091

Galena & Sphalerite

Classic Locality

Description Tabs

Description
Locality: 
Tohya Mine, Takarada, Shiribeshi Subprefecture, Hokkaido Island, Japan
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
4.5 × 7.2 × 3.2 cm
Description

Kuroko is a natural mix of Galena, Sphalerite, Pyrite and Chalcopyrite. These deposits got developed like black smokers (on the ocean floor). Through tectonics these deposits got up lifted and are now on land. Kuroko deposits were for a long time a very important source for Copper, Lead, Zink and also Silver.

 

Mineral Data
What's on the rock

Galena

Formula: 
PbS
Strunz: 
2.CD.10
Crystal System: 
Isometric
Hardness: 
2.5
Colour: 
Lead-grey
Streak: 
Lead-grey

Sphalerite

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

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