Hausmannite, Gaudefroyite and Andradite garnet
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N'Cwaning II mine, Kalahari Manganese Field, Northern Cape, South Africa
2452
Mirror bright, jet-black Hausmannite crystals interspersed with a scattering of the rare manganese borate Gaudfroyite set on a matrix of Andradite garnet. Classic N'Cwaning specimen
Formulas: Hausmannite Mn2+Mn3+2O4; Gaudefroyite Ca4Mn3+2-3(BO3)3(CO3)(O,OH)3; Andradite Ca3Fe3+2(SiO4)3
Status: Sold
Dimensions: 55x53x35mm
Size: Miniature (M)
Minerals of the English Midlands
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