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Siderite Psm Pyrrhotite Calcite & Sphalerite

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CLB637374

Siderite Psm Pyrrhotite Calcite & Sphalerite

Pseudomorph

Description Tabs

Description
Locality: 
Herja, Baia Mare, Romania
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
10.8 × 10 × 5.7 cm
Weight: 
1 063.00gr
Description

An excellent pyrrhotite rose, replaced by siderite. One of my most interesting and unique Romanian specimens so far. The 'rose' is surrounded by white, botryoidal calcite crystals (those show a few dings) and there are two shiny little sphalerite crystals in the middle. More sphalerite in the pyrrhotite matrix.

Mineral Data
What's on the rock

Siderite

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

Pyrrhotite

Formula: 
Fe1-xS (x = 0 to 0.17)
Strunz: 
2.CC.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Calcite

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

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

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