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Petříčekite Quijarroite & Hansblockite

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CR703848

Petříčekite Quijarroite & Hansblockite

with Dr. Günter Grundmann expertise #12
Analysed

Description Tabs

Description
Locality: 
El Dragón Mine, Quijarro Province, Potosi Department, Bolivia
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1.2 × 0.5 cm
Description

This is a very well analysed and documented section from El Dragon Mine. Analytic and documentation was done by Dr. Günter Grundmann who studied and published many of the extremely rare minerals from El Dragon Mine.

This section contains Petříčekite, Quijarroite and Hansblockite. Everything can be found in the attached and printed documentation.

Only 18 section from Günter Grundmann were available - most of them  went to University collection. I´m proud to offer 4 of them in this and the following auctions.

Mineral Data
What's on the rock

Petříčekite

Formula: 
CuSe2
Crystal System: 
Orthorhombic
Hardness: 
2 - 2½
Streak: 
Black
Type Locality: 
Předbořice, Central Bohemian Region, Czech Republic
Isostructural with: 
Marcasite
Dimorph Of: 

Krut'aite

Formula: 
CuSe2
Strunz: 
2.EB.05a
Hardness: 
4.0

Quijarroite

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

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