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

FERRILOTHARMEYERITE with Zincolivenite

$160.00

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Crystal Classics
Crystal ClassicsFeatured
Tucson, Arizona, USA
7,543 for sale·132 sold
This thumbnail specimen is an extremely well-provenanced Tsumeb mine rarity. Recorded as from 44 Level, Tsumeb mine, this Ferrilotharmeyerite specimen was obtained by Dr. Hans-Jurgen Wilke (1925-2014) from Cureton Mineral Co. in 1993 - the year that Ferrilotharmeyerite was described. The Ferrilotharmeyerite forms much of the specimen, as tiny golden yellow glassy microcrystals filling cavities throughout the matrix, with several excellent, green, waxy, Zincolivenite crystals displaying the classic wedge-shaped form, exceptionally to 4.5 mm in length. Another superb Tsumeb rarity.

Product details

Species
ZincoliveniteAbout Zincolivenite →
SizeThumbnail
Dimensions2.3 x 1.6 x 1.5 cm
Listed on12/02/2024
Locality
Namibia, Oshikoto Region, TsumebRegional guide →
SKUCC43640

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.