30061 Groutite, Calcite, Wessels Mine, Hotazel, Kalahari manganese field, Northern Cape, South Africa
Black groutite on an unknown brown stalactitic mineral with calcite that fluoresces red. Ex Barry Johnson Collection.
Africa
30058 Olimiite, Celestine, N’Chwaning II Mine, Kuruman, Kalahari manganese field, South Africa
Olmiite fluoresces bright red under longwave UV. Ex Barry Johnson Collection. Video best viewed full screen.
ncat VHD10, Duftite, Dioptase, Tsumeb Mine, Tsumeb, Namibia
Ex Roger Colling Collection
20044 Fluorite, Aquamarine, Erongo Mountains, Karibib, Erongo Region, Namibia
Green fluorite with purple edges. The green is fluorescent but not the purple. Pale blue prismatic aqua. With the spate of fakes coming out of the region, I have examined this specimen very closely. It looks to be real.
5661 Diamond, Liberia
Greenish-black fragment of a crystal 5mm wide. Acquired from CK Minerals at the 2019 Nunawading Show.