This is a beautiful Olmiite piece from N’Chwaning Mine lll, Kuruman, Kalahari Manganese Field, Northern Cape, South Africa
Dimensions: 3.5cm (1.3”) x 2cm (0.7”)
Weight: 9.2 grams
“One of the most important mineral discoveries in the Kalahari Manganese Field during the past 15 years has been that of the Olmiite. (Ref: The Kalahari Manganese Field the adventure continues - pg.258)
Olmiite has the chemical formula:
CaMn[SiO3(OH)](OH)
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