Sulphates, Nitrates and Borates
Ettringite
$3,500.00 €2,869 £2,590.00 approx. This specimen is priced in US dollars, all other prices are approximate.
ID:
CC11101
Excellent lenticular to substantially blocky terminated crystals of bright acidic lemon-yellow Ettringite are pleasingly scattered over a pale-grey druse of sparkling micro-crystals of Quartz with Hematite inclusions. This gorgeous specimen is from the world-famous N'Chwaning Mines at Kuruman, in the Kalahari Manganese Field of South Africa. Three mines work this hydrothermally sediment-enriched orebody, the N'Chwaning I, II and III mines, but specimens can often not be attributed to a specific mine, hence the collective mine name. The Ettringite crystals can attain around 9 x 8 x 6 mm and are all perfectly euhedral and undamaged, forming as double terminated hexagonal prisms with pointed pyramidal hexagonal terminations. When the prism is short, the crystals are lenticular and when a little longer, become a stubby barrel-shape and all with a glassy lustre. This is a fine Ettringite specimen from the N'Chwaning Mines, whose crystals contrast wonderfully against the Quartz matrix.