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Hutchinsonite Orpiment & Baryte

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GND57553

Hutchinsonite Orpiment & Baryte

Ex. Max Schultz Collection (Sth.Aust)
Rare Mineral

Description Tabs

Description
Locality: 
Quiruvilca Mine, Quiruvilca District, Santiago de Chuco Province, Libertad Department, Peru
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 4.3 × 1.9 cm
Description

Bunches of orange orpiment micro-crystals have formed together with clear tabular plates of baryte and a few long grey crystals of the very rare thallium lead arsenic sulphide - hutchinsonite.

This material is typical of specimens that came out quite some years ago now and are difficult to obtain.

Mineral Data
What's on the rock

Hutchinsonite

Formula: 
TlPbAs5S9
Strunz: 
2.HD.45
Hardness: 
1.5 - 2.0
Type Locality: 
Lengenbach Quarry, Fäld (Imfeld; Im Feld; Feld), Binn Valley, Wallis (Valais), Switzerland

Orpiment

Formula: 
As2S3
Strunz: 
2.FA.30
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0

Baryte

Formula: 
BaSO4
Strunz: 
7.AD.35
Hardness: 
3.0 - 3.5
Streak: 
White
Gondwana Minerals