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Eldragónite & Petrovicite

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JYJ723786

Eldragónite & Petrovicite

SEM-EDS confirmed specimen no 2019-06-05-1-x

Description Tabs

Description
Locality: 
El Dragón Mine, Quijarro Province, Potosi Department, Bolivia
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 1.5 × 1.3 cm
Description

A SEM-EDS confirmed polished section hosting eldragónite and many other selenides. 

Arrows can be replaced by newer ones. They  mark the position of interest of the correlative images (SEM & light image). 

The light image was made first and the investigated under the electron beam. 

Following minerals can be associated to the numbers in the light images:

Arrow 1 (first two images; light & BSE image)
1-1 eldragonite, brown patches (analysis attached, first one (pages 1-2))
1-2 hansblockite-quijarroite (analysis attached, third one,(page 5))
1-3 hansblockite-quijarroite

1-5 penroseite
1-6 klockmannite at%Cu 44, Se 56
1-8 hansblockite-quijarroite
1-10 Petrovicite (second analysis, analysis attached, Hg dominance (pages 3-4))
1-12 Penroseite
1-13 Eldragonite
1-14 klockmannite

Second arrow

Native Gold 
2-2 eldragonite
2-5 klockmannite
 

 

Mineral Data
What's on the rock

Eldragónite

Formula: 
Cu6BiSe4(Se2)
Hardness: 
3.5
Colour: 
Brownish to light-maroon
Type Locality: 
El Dragón mine, Antonio Quijarro Province, Potosí Department, Bolivia

Petrovicite

Formula: 
Cu3HgPbBiSe5
Strunz: 
2.LB.40
Crystal System: 
Orthorhombic
Hardness: 
3.0
Colour: 
Cream
Type Locality: 
Petrovice, Nové Město na Moravě, Vysočina Region, Moravia (Mähren; Maehren), Czech Republic
Analysis
Analysis Report - only: Eldragónite & Petrovicite
Analysis Report - only: Eldragónite & Petrovicite
Analysis Report - only: Eldragónite & Petrovicite
Analysis Report - only: Eldragónite & Petrovicite
Analysis Report - only: Eldragónite & Petrovicite