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Comments: Lustrous feathery crystals of manganite to 0.75 cm.
Location: N'Chwaning Mine, Kalahari Manganese Field, Northern Cape Province, South Africa.
Scale: 7.8 x 4.2 cm.
© John Veevaert
Manganite: MnO(OH) Sudoite: Mg2(Al,Fe+++)3Si3AlO10(OH)8
Comments: Pinkish to nearly white earthy sudoite with dark manganite.
Location: Ilfeld, Nordhausen, Erfurt district, Harz Mts, Thuringia, Germany.
Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag
Manganite: MnO(OH) Vaterite: CaCO3 Defernite: Ca6(CO3)2-x(SiO4)x(OH)7(Cl,OH)1-2x (x=0,5)
Comments: Opaque white fibrous vaterite with red defernite and black manganite.
Location: Kombat Mine, Otavi, Otjozondjupa, Namibia.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species