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Hansblockite Quijarroite Eldragónite & Watkinsonite

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JYJ782373

Hansblockite Quijarroite Eldragónite & Watkinsonite

Description Tabs

Description
Locality: 
El Dragón Mine, Quijarro Province, Potosi Department, Bolivia
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 0.9 × 1 cm
Description

Polished section hosting beige hansblockite-quijarroite minor watkinsonite. 

Other minerals associated in this assemblage are brassy eskebornite, bluish dark-grey klockmannite, native gold, clausthalite and krutaite-penroseite. 

Specimen comes with a printed set of EDS analysis. 

Below is a list of SEM-EDS measurement points: 

1a quijarroite

1d,f,g watkinsonite

1i, 1j, 1l, 1n eldragonite

1o, 1t hansblockite

1w clausthalite

 

Mineral Data
What's on the rock

Hansblockite

Formula: 
(Cu,Hg)(Bi,Pb)Se2
Crystal System: 
Monoclinic
Hardness: 
2 - 2.5
Colour: 
Black
Type Locality: 
El Dragón mine, Antonio Quijarro Province, Potosí, Bolivia
Dimorph Of: 

Gudmundite

Formula: 
FeSbS
Strunz: 
2.EB.20
Hardness: 
5.5 - 6.0

Quijarroite

Formula: 
Cu6HgPb2Bi4Se12
Crystal System: 
Orthorhombic
Colour: 
Black metallic
Type Locality: 
El Dragón mine, Antonio Quijarro Province, Potosí, Bolivia

Eldragónite

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

Watkinsonite

Formula: 
Cu2PbBi4(Se,S,Te)8
Strunz: 
2.HB.20e
Hardness: 
3.5
Colour: 
Black
Type Locality: 
Otish Mountains U deposit, Otish Mts, Baie-James, Nord-du-Québec, Québec, Canada