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Siderite Psm Psm Calcite

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MGR924171

Siderite Psm Psm Calcite

Classic Locality

Description Tabs

Description
Locality: 
Turt Mine, Negrești-Oas, Satu Mare County, Romania
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.7 × 8.4 × 5.6 cm
Description

Siderite replaced huge calcite crystals - one of the great classics from this famous locality! The crystals are well shaped and complete all around - the piece is very light because the crystals are hollow inside.

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