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Tourquay, England. 30mm x 30mm.
Erongo, Namibia. 30mm x 30mm.
Erongo Region, Namibia. 100mm x 110mm.
N'Chwaning 2 Mine, Kalahari Manganese Fields, South Africa. 30mm x 40mm.
N'Chwaning 2 Mine, Kalahari Manganese Fields, South Africa. 30mm x 30mm.
Tsumeb Mine, Namibia. 35mm x 15mm.