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Stibnite & Valentinite

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CLB170479

Stibnite & Valentinite

ex collection Steffen Schwarz
Pseudomorph

Description Tabs

Description
Locality: 
Brandholz Goldkronach District, Upper Franconia, Bavaria, Germany
Size Range: 
Cabinet (10-18 cm)
Size: 
13.5 × 9.5 × 6 cm
Description

Very rare specimen of shiny black stibnite crystals with white valentinite (pseudomorph after stibnite) on quartz. Was mislabeled 'Ramsbeck' (no stibnite in Ramsbeck). The first Brandholz stibnite I've seen in nature.

Mineral Data
What's on the rock

Stibnite

Formula: 
Sb2S3
Strunz: 
2.DB.05
Hardness: 
2.0
Streak: 
Lead grey

Valentinite

Formula: 
Sb2O3
Strunz: 
4.CB.55
Hardness: 
2.5 - 3.0
Streak: 
White
Type Locality: 
Les Chalanches Mine, Allemont, Isère, Rhône-Alpes, France

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