Ettringite

The rare mineral ettringite (Hydrated Calcium Aluminum Sulfate Hydroxide), closely related to sturmanite, is well-known in specimens from the Wessels locality. It forms as a precipitate from hydrothermal solutions. This is a plate of bright yellow, solid ettringite, crystallized on the surface with the typical nailhead-form crystals.

Unknown Owner

Product details

Species

Ettringite

SizeSmall Cabinet

Dimensions6.9 x 4.9 x 1.1 cm

Locality

South Africa, Northern Cape, Wessels Mine

Added on10/23/2024

Comments

Known provenance

2024/08