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Eucairite Umangite & Berzelianite

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JYJ757358

Eucairite Umangite & Berzelianite

EDS conf specimen no 19-12-14-BUK

Description Tabs

Description
Locality: 
Bukov Mine, Rožná, Žďár nad Sázavou District, Vysočina Region, Czech Republic
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 3.8 × 1 cm
Description

EDS conf specimen no 19-12-14-BUK hosting rich masses of eucairite and umangite, minor berzelianite, gold and clausthalite. 

Analysis attached. 

Rare mineral!

Mineral Data
What's on the rock

Eucairite

Formula: 
AgCuSe
Strunz: 
2.BA.50
Hardness: 
2.5
Streak: 
Shining
Type Locality: 
Skrikerum Mine (Skrickerum Mine), Valdemarsvik, Östergötland, Sweden

Umangite

Formula: 
Cu3Se2
Strunz: 
2.BA.25
Crystal System: 
Tetragonal
Hardness: 
3.0
Streak: 
Black
Type Locality: 
Trogtal Quarries, Lautenthal, Harz, Lower Saxony, Germany

Berzelianite

Formula: 
Cu2Se
Strunz: 
2.BA.20
Crystal System: 
Isometric
Hardness: 
2.0
Streak: 
Shining
Type Locality: 
Skrikerum Mine (Skrickerum Mine), Valdemarsvik, Östergötland, Sweden
Analysis
Analysis Report - only: Eucairite Umangite & Berzelianite
Analysis Report - only: Eucairite Umangite & Berzelianite
Analysis Report - only: Eucairite Umangite & Berzelianite
Analysis Report - only: Eucairite Umangite & Berzelianite
Analysis Report - only: Eucairite Umangite & Berzelianite