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Siderite & Pyrite

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BMM712698

Siderite & Pyrite

Description Tabs

Description
Locality: 
Saint-Pierre-de-Mésage, Vizille, Isère, Auvergne-Rhône-Alpes, France
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 4.7 × 3.3 cm
Description

A rarely seen siderite pyrite combination from the classic Saint-Pierre-de-Message locality. Golden shiny pyrite crystals are nestled between blades of dark brown siderite crystals. Crystallized upright around, only a very small part from the bottom was extracted from the rock. The specimen stands in the displayed positions without support. A perfect piece of brilliant aesthetics and quality.

Mineral Data
What's on the rock

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5