KEYITE with Zincolivenite - image 1
KEYITE with Zincolivenite - image 2
specimen video

KEYITE with Zincolivenite

$350.00

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Crystal Classics
Crystal ClassicsFeatured
Tucson, Arizona, USA
7,543 for sale·132 sold
A small, but significant specimen of the extremely rare species Keyite, from the Type Locality at Tsumeb mine. A small thumbnail piece of oxidized Tennantite ore is coated on two sides with pale blue/sea green prismatic microcrystals of Keyite with darker green sharp Zincolivenite microcrystals. The Keyite is well crystallized, but many of the larger crystals have some damage. There are some perfect smaller crystals evident. Pale blue Keyite can also be seen as a massive veinlet cutting through the back of the specimen. Specimens of this species so rarely come up for sale and usually as tiny fragments. A really great specimen for a rare species enthusiast.

Product details

Species
ZincoliveniteAbout Zincolivenite →
SizeThumbnail
Dimensions1.1 x 1.6 x 0.7 cm
Listed on03/07/2026
Locality
Namibia, Oshikoto Region, TsumebRegional guide →
SKUCC43658

Learn more

Mineral guide
Learn about Zincolivenite
emerald-green crystals in radiating sprays with vitreous to adamantine luster; notable localities, color, habit, and ID cues.
Zincolivenite
Regional guide
Zincolivenite from Tsumeb Mine, Namibia
from Tsumeb is the modern name for much of the vivid green “cuproadamite” and “cuprian adamite” that circulated for decades from this legendary Namibian mine. It sits between adamite and olivenite in the adamite–olivenite solid-solution series, with ideal composition CuZn(AsO4)(OH), and Tsumeb is one of the places where that chemistry becomes a collector’s problem as much as a mineralogical one: color, habit, and zoning can suggest the identity, but the most careful determinations rely on quantitative chemical analysis.