• Thaumasite
  • Thaumasite
  • Thaumasite
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Thaumasite

$750.00   €647  £550.00 approx.  

This specimen is priced in US dollars, all other prices are approximate.

ID: CC20439
A superb, gemmy colourless prismatic Thaumasite, from the N'Chwaning mines in South Africa.  Thaumasite is a rare and complex calcium silicate which includes a carbonate component and sometimes a sulphite.  This 2.6 x 2.2 x 1.5 cm cluster of crystals, although colourless, does contain a hint of yellowish-green and is attached to a thin patchy crust of chocolate brown siliceous matrix.  About eight Thaumasite crystals make up this large thumbnail, the largest by far being 1.8 x 1.0 x 0.8 cm.  All the crystals are transparent and contain many gemmy zones plus patches of iridescent interference colours within the prism bodies.  This is a well crystallised specimen of Thaumasite from the N'Chwaning mines within the Kalahari Manganese Field.

Details

Dimensions
2.6 × 2.2 × 1.5 cm
Categories
Silicates
Locality
N'Chwaning II Mine, N'Chwaning Mines, Kalahari Manganese Fields, Northern Cape Province, South Africa, Africa

Minerals on Specimen

Minerals on specimen

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