Postmasburg manganese field, Northern Cape Province, South Africa

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Alabandite : Mn²⁺S, Diaspore (Var: Mangan-diaspore) : AlO(OH)
	Postmasburg manganese field, Northern Cape Province, South Africa Black Alabandite crystals associated with orange brown Mangan-diaspore crystals. Field of view 10 mm. Collection M. Kampf No 88-182.
© 2006 M. Kampf	Photo ID: 48161 View Count: 461
Alabandite : Mn²⁺S, Diaspore (Var: Mangan-diaspore) : AlO(OH)
	Postmasburg manganese field, Northern Cape Province, South Africa Dark bronze compact Alabandite or in pseudocrystals with pink laminar Mangan-diaspore. 4,2x2,5x2,5 cm. In my personal systematic collection. Photo Simone Citon.
© Simone Citon	Photo ID: 172456 View Count: 133
Bixbyite : (Mn³⁺,Fe³⁺)₂O₃
	Postmasburg manganese field, Northern Cape Province, South Africa Picture width is 12mm. Black cubes of Bixbyite. This picture was corrected at 21.09.2009. It was uploaded as Alabandite, but some tests (hardness, heating) ruling out the Alabandite. See here : http://www.mindat.org/mesg-7-152224.html
© Elmar Lackner	Photo ID: 73891 View Count: 336
Diaspore : AlO(OH)
	Glosam mine, Postmasburg manganese field, Northern Cape Province, South Africa Picture width is 15mm. brown-red crystals of Diaspore (Var.Mangan-Diaspore).
© Elmar Lackner	Photo ID: 73868 View Count: 254
Diaspore (Var: Mangan-diaspore) : AlO(OH)
	Glosam mine, Postmasburg manganese field, Northern Cape Province, South Africa Specimen size: 8x7 cm. Specimen and photo Leon Hupperichs.
© Leon Hupperichs	Photo ID: 150080 View Count: 165
Diaspore (Var: Mangan-diaspore) : AlO(OH)
	Glosam mine, Postmasburg manganese field, Northern Cape Province, South Africa 6.4 x 4.1 x 3.2 cm. Mangan-diaspore is the manganese-rich variety of diaspore and is rare worldwide. This fine old-time specimen is essentially solid mangan-diaspore in the form of highly lustrous, glassy, rose-red lathes. The lathes reach 2.8 cm on this excellent and very rich piece. Ex. Mullane Collection and accompanied by a 1960s-1970s era ...
© Rob Lavinsky	Photo ID: 261487 View Count: 10
Ephesite : NaLiAl₂[(OH)₂\|Al₂Si₂O₁₀]
	Gamagara Ridge, Gloucester Farm, Postmasburg manganese field, Northern Cape Province, South Africa 1 mm crystal of Ephesite. Further paragenesis: Braunite, Bixbyite. Exact location is the Mancorp Mine, Gamagara Rigde, Postmasburg, Griqualand-West, Northern Cap, South Africa.
© Peter Kohorst	Photo ID: 55075 View Count: 522
Ephesite : NaLiAl₂[(OH)₂\|Al₂Si₂O₁₀]
	Lohatlha mine, Postmasburg manganese field, Northern Cape Province, South Africa Ephesite crystals to 5 mm from Postmasburg, South Africa. Specimen and Photo: Knut Eldjarn.
© Knut Eldjarn	Photo ID: 53323 View Count: 322
Ephesite : NaLiAl₂[(OH)₂\|Al₂Si₂O₁₀]
	Gamagara Ridge, Gloucester Farm, Postmasburg manganese field, Northern Cape Province, South Africa Ephesite. Vasco Trancoso collection and photo. Size: 8.4 x 5.3 x 5.2 cm with crystals up to 7,5mm. This particularly unusual find (mid-1980s), was a major one in South Africa. This piece is outstanding for size and overall color of the display view. I would say it has to be "up there" in quality for the species. The rich, luscious cherry-red ...
© vasco trancoso	Photo ID: 189125 View Count: 117
Ephesite : NaLiAl₂[(OH)₂\|Al₂Si₂O₁₀]
	Postmasburg manganese field, Northern Cape Province, South Africa Pink Ephesite crystals. Picture width is 5mm.
© Elmar Lackner	Photo ID: 202315 View Count: 70