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Calcite


Mineral: Calcite, Duftite, Hematite
Chemistry: CaCO3
Size: 100 mm
Owner: Marshall Sussman
Photographer: Malcolm Southwood

Rhombohedral crystals of colourless-white calcite (to 35 mm), with green and red-brown phantoms of an earlier generation of scalenohedral calcite that was partly coated with what is probably duftite (?) and hematite (?), although neither of these minerals has been verified by analysis.