Ettringite - image 1
Ettringite - image 2
specimen video

Ettringite

$950.00

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Crystal Classics
Crystal ClassicsFeatured
Tucson, Arizona, USA
7,543 for sale·132 sold
Bright canary yellow prismatic crystals of Ettringite measuring to 1.5 cm form an open cluster covering a 3.5 x 2.0 cm pinkish orange matrix. Many crystals have white tipped terminations, whereby a hexagonal matt white core is framed by a hexagonal lemon Ettringite edge. An exquisite small miniature from N'Chwaning #2 mine in the Kalahari Manganese Field of South Africa.

Product details

Species
EttringiteAbout Ettringite →
SizeMiniature
Dimensions3.8 x 4.0 x 1.9 cm
Listed on10/24/2024
Locality
South Africa, Northern Cape, N'Chwaning II MineRegional guide →
SKUCC7162

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 N'Chwaning II Mine, South Africa
N'Chwaning II ettringite is one of the great paradoxes of modern mineral collecting: a soft, water-rich cement-mineral species that, at this locality, became a cabinet-level showpiece. The best examples are lemon- to sulfur-yellow, glassy to silky, and sharply hexagonal, often with the kind of saturated yellow that collectors more readily associate with sulfur than with a calcium aluminum sulfate hydrate. On fine crystals the color is not a surface stain but an internal glow, especially in translucent prisms where the broad hexagonal faces show growth zoning, fine striations, and a waxy-gemmy brightness.