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Robinsonite & Quartz

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SER977947

Robinsonite & Quartz

ex Americo Urbinati collection

Description Tabs

Description
Locality: 
Calanda, Chur Region, Grisons, Switzerland
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 0.5 × 0.4 cm
Description

a quartz  crystal hosting several elongated crystals of metallic robinsonite

Mineral Data
What's on the rock

Robinsonite

Formula: 
Pb4Sb6S13
Strunz: 
2.HC.20
Hardness: 
2.5 - 3.0
Colour: 
Lead-gray
Streak: 
Gray
Type Locality: 
Red Bird Mine, Lovelock, Antelope District, Pershing Co., Nevada, USA

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White