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Berthierite Siderite & Calcite

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RBR152064

Berthierite Siderite & Calcite

Rare Mineral

Description Tabs

Description
Locality: 
Herja Mine, Chiuzbaia, Baia Mare, Maramureș County, Romania
Size Range: 
Cabinet (10-18 cm)
Size: 
16 × 11.5 × 8.5 cm
Description

This specimen is impressive, not just because of it's size. When you're holding it you'll notice it's weight and all you'll say is "wow". Berthierite from Romania can be found on the marked sometimes, but this size is remarkable. The crystal-spray consists of uncountable single crystals grown on each other. On top you'll find thousands of small siderite with a yellow-orange color - what a contrast to the dark berthierite. The specimen is undamaged, okay there 1-2 small nicks on the siderites but you'll have to search fro them. An exceptional specimen!

Mineral Data
What's on the rock

Berthierite

Formula: 
FeSb2S4
Strunz: 
2.HA.20
Crystal System: 
Orthorhombic
Hardness: 
2.0 - 3.0
Type Locality: 
Chazelles-Haut (Chazelle), Mercoeur, Haute-Loire, Auvergne, France

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