tarbuttite

tarbuttite

[′tär·bə‚tīt]
(mineralogy)
Zn2(PO4)(OH) A triclinic mineral of varying color, consisting of basic zinc phosphate.
References in periodicals archive ?
com) showed me a flat of specimens from the Skoipion mine, Rosh Pinah, Namibia, including miniature to small-cabinet specimens of tarbuttite in pale green crystal aggregates to about 2 cm in length.
This time Paul showed me flat after fiat of good specimens, mostly thumbnail and miniature size, of olmiite from the N'Chwaning mine; goshenite beryl in sharp, lustrous, doubly terminated prisms to 2 cm with black schorl crystals, from the Erongo Mountains, Namibia; attractive pale apple-green tarbuttite in intergrown crystal sheaves partly coated by chalky white skorpionite, from the Skorpion mine, Namibia; pale brown fans of very thin, bladed crystals of eudidymite to 3 cm, from Mt.
This Encyclopedia section, being current as of 2007, offers many surprises: who knew, for instance, that lovely clusters of translucent pale green tarbuttite crystals with individuals to 1 cm are presently coming from the Skorpion zinc mine in the Luderitz district in far southwestern Namibia?
His ads in November-December began to list the many minerals he obtained, including dioptase from "French Equatorial Africa," tarbuttite crystals on matrix from Northern Rhodesia, and many others.
The matrix pieces, from 5 to 18 cm across, show open cavities lined by crude pale green crystals of tarbuttite covered by carpets of white, acicular, glistening microcrystals of skorpionite, with white crusty areas of hydrozincite and sparse microcrystals of scholzite.
The Skorpion zinc mine in southern Namibia and its specimens of green tarbuttite are described briefly in Namibia: Minerals and Localities, the excellent new book by Ludi von Bezing et al.
This new phosphate has been found as small, colorless crystals with tarbuttite.
Associated minerals are: scholzite, tarbuttite, parahopeite, zincian collinsite, switzerite and phosphophyllite.