• Ettringite
  • Ettringite
  • Ettringite
  • Ettringite
  • Ettringite
Gallery

Ettringite

$3,500.00   €2,907  £2,510.00 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.

Details

Dimensions
2.8 × 6.7 × 2.3 cm
Categories
Sulphates, Nitrates and Borates
Locality
N'Chwaning Mines, Kalahari Manganese Fields, Northern Cape Province, South Africa, Africa

Minerals on Specimen

Minerals on specimen
Ettringite

Related Mineral Specimens

Hausmannite
$3,500
 N'Chwaning Mines, Kalahari Manganese Fields, Northern Cape Province, South Africa, Africa
A very fine crystal specimen of Hausmannite from the N'Chwaning Mines, South Africa. Displaying...
$3,500
 N'Chwaning Mines, Kalahari Manganese Fields, Northern Cape Province, South Africa, Africa
Two semi-lustrous, translucent milky-white Celestine (formerly Celestite) crystals to 7 and 6.5 cm...
RHODOCHROSITE
$4,500
 N'Chwaning Mines, Kalahari Manganese Fields, Northern Cape Province, South Africa, Africa
A terrific joined pair of off-matrix, burnt cherry-red Rhodochrosite crystals from the classic...
Hematite
$1,250
 N'Chwaning Mines, Kalahari Manganese Fields, Northern Cape Province, South Africa, Africa
A choice miniature of intergrown crystals of Hematite, up to 1.5 cm across, from the N'Chwaning...