Calcite, Ettringite
TwoPie's Collection
Minerals
Calcite,Ettringite
Locality
N'Chwaning II Mine- N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
Other Names
方解石, 钙铝矾
Description
Small stubby opaque white prismatic hexagonal crystals and some opaque to edge transparent crystals of ettringite on a large crystals of calcite. The ettringite is opaque with some exceptions being edge transparent and slightly yellowed with a vitreous lustre. There is an attached fragment of lamellar hausmannite on andradite on country rock ironstone. The large calcite to 4.6cm x 3.6cm wide is a hex with a modified trigonal termination that is covered by ettringite.
Detail
Size:4.6x5.4x4.4cm
Weight:114.9 g
Number:NCHW-024 (7FF8-2025PWTH)