Siderite, Pyrrhotite & Calcite - 442

Morro Velho Mine,Nova Lima, Minais Gerais, Brazil

442

Mix of disc shaped straw coloured sideritesand white calcite crystals all topped with a dusting of pyrrhotite, particularly rich at one end of the specimen. Largest pyrrhotite specimen 10mm across. Under the microscope two of the siderite crystals have a little edge contact.

Siderite formula: Fe2+CO3 ; Pyrrhotite formula: Fe1-xS (x + 0 to 0.17)

£20.00

Status: Available

Dimensions: 55x30x35mm

Size: Miniature (M)

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