Thumbnail, 2.1 x 1.7 x 1.5 cm
N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa

A sharp, lustrous, bright canary-yellow ettringite crystal attractively set on a matrix of smaller ettringite crystals. The translucent crystal is sharply terminated and has textbook, hexagonal crystal form. A highly representative specimen of the species from one of the N'Chwaning Mines of South Africa and the Charlie Key Collection.