Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Pyrolusite from
Mamatwan Mine, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa


Locality type:Open-Cast Mine
Classification
Species:Pyrolusite
Formula:Mn4+O2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrolusite data
Locality Data:Click here to view Mamatwan Mine, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
Data Identifiers
Mindat Occurrence Record ID:263880
Long-form Identifier:1:3:263880:5
GUID (UUID V4):0
Nearest other occurrences of Pyrolusite
18.1km (11.3 miles) ⓘAnnex Langdon, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
31.8km (19.8 miles) ⓘN'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
32.6km (20.3 miles) ⓘBlack Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
33.7km (20.9 miles) ⓘWessels Mine, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
38.5km (23.9 miles) ⓘSishen Mine, Kathu, Gamagara Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
67.5km (42.0 miles) ⓘBishop farm, Western Belt, Gamagara Ridge, Northern Cape, South Africa
71.2km (44.2 miles) ⓘLohatlha Mine, Western Belt, Gamagara Ridge, Northern Cape, South Africa
76.5km (47.6 miles) ⓘGlosam Mining Village, Gloucester Farm, Western Belt, Gamagara Ridge, Northern Cape, South Africa
88.1km (54.7 miles) ⓘDoornfontein Farm, Western Belt, Gamagara Ridge, Northern Cape, South Africa
91.1km (56.6 miles) ⓘPaling farm, Western Belt, Gamagara Ridge, Northern Cape, South Africa
References
Cairncross, B., Dixon, R. (1995) Minerals of South Africa. Geological Society of South Africa. p.1-290.
Preston, P. C. C. R. (2009). Physical and chemical characterization of the manganese ore bed at the Mamatwan mine, Kalahari manganese field (Doctoral dissertation).
Harawa, E. T. (2016). Mineralogy and geochemistry of structurally-controlled metasomatic alteration of carbonate-rich manganese ore at Mamatwan Mine, Kalahari Manganese Field (Masters thesis, Department of Geology, Rhodes University).
 
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