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Siderite With Dolomite

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NSS501256

Siderite With Dolomite

Description Tabs

Description
Locality: 
Morro Velho Mine, Nova Lima, Minas Gerais, Brazil
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 10 × 6 cm
Description

yellow siderite with colorless dolomite,specimen cristallized around,all terminated cristals covered by hexagonal tabular cristalof pirrotite,there is also small prismatic cristals of cubanite,largest is 4 mm,very nice specimen.

Mineral Data
What's on the rock

Siderite

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

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White

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