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Siderite & Calcite

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WND811761

Siderite & Calcite

Classic Locality

Description Tabs

Description
Locality: 
La Mure, Isère, Auvergne-Rhône-Alpes, France
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12.1 × 9.1 × 5.4 cm
Description

Discoidal crystals of translucent, lustrous, amber-brown, siderite to 4,0 cm across are interspersed with white, rhombohedral calcite crystals. The aesthetics of the mix of both species is beautiful. I cannot say as I have seen many better pieces so large from this mine, of the famous siderite it produced in the last century. This is a large and very aesthetic specimen in splendid mostly undamaged condition. A real feast for the eyes.

Mineral Data
What's on the rock

Siderite

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White
Wendel Minerals

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