- Ettringite (DT)
- N'Chwaning II Mine, Kalahari manganese field, Northern Cape Province, South Africa
- Thumbnail, 2.5 x 0.7 x 0.6 cm
- Ex. Paul Otto
Quality, single-crystal of the sulfate Ettringite from the well-known N'Chwaning II Mine in South Africa. The deep golden color, hexagonal prism, and pearly luster are classic, and these are enhanced by the gemmy to translucent nature of the crystal and the fact that it is doubly terminated. A fine thumbnail.