Ettringite - image 1

Ettringite

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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.

Product details

SpeciesEttringite
SizeSmall Cabinet
Dimensions6.9 x 4.9 x 1.1 cm
Added on10/23/2024
LocalitySouth Africa, Northern Cape, Wessels Mine

Known provenance

DateCollectorAcquisition price
08/2024Unknown OwnerNot disclosed
—The ArkenstoneNot disclosed

Learn more

Ettringite
Mineral guide
Learn about Ettringite
lemon-yellow hexagonal prisms; a fragile hydrated sulfate with notable localities like Kalahari and Eifel, Crestmore, prized by collectors.
Ettringite
Regional guide
Ettringite from Wessels Mine, South Africa
from Wessels Mine, South Africa — a defining Kalahari Manganese Field mineral with lemon-yellow crystals and strong collecting appeal.