Ettringite on Calcite on Brucite
Ettringite on Calcite on Brucite
N'Chwaning II Mine, Kalahari Manganese Field, Northern Cape, South Africa.
Size: 8 x 12.2 x 2 cm (Small Cabinet)
The specimen has a flat plate of brucite to about 1.4cm of depth that is topped with deposits of ettringite on calcite that covers the base plate end to end. Tyhe brucite matrix is a knitted formation of tabular hexagonal plated crystals. These created an aggregate formation. The calcite has a bi-pyramidal prismatic hexagonal habit. The ettringite presents as a bright yellow sugary precipitation. A very nice specimen that is very colourful.
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SKU:SAMS-402
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