Ettringite with Calcite

$1,500.00

$40.00 shipping
Seller offers an extended return window of up to 30 days
Ships from USA

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Tucson, Arizona, USA

7,572 for sale·132 sold

A choice and highly aesthetic specimen with two hexagonal, acidic lemon-yellow Ettringite crystals to 1.7 and 1.8 cm long, perched either end of a well crystallised group of Calcite crystals. Ettringite is a hydrous calcium aluminium sulphate and the crystals on this miniature grade from translucent outer shells with a glassy to satin lustre, to inner, opaque pale lemon-white cores. The slightly longer crystal has no terminations whereas the smaller has one well terminated end. A classic Ettringite from the N'Chwaning mines at Kuruman in the Kalahari Manganese Field of Northern Cape Province, South Africa.