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MD-177450 - Jamesite - - Archived Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia miniature, 4.3 x 3.5 x 2.8 cm.
4.3 x 3.5 x 2.8 cm. A specimen rich with small red microcrystals of the rare arsenate Jamesite, from the type locality, in veins mixed with duftite and on contrasting white dolomite.
MD-18804 - Jamesite - - Archived Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia thumbnail, 3 x 3 x 2.5 cm
Jamesite is an exceedingly rare lead zinc iron arsenate. I have personally nevert seen another for sale, but I am told that this IS indeed an excellent specimen for the species by somebody who has. This piece features eye-visible (sub-mm) red crystals in a rich zone in the upper-right of the matrix. It's easy to spot and has also been independently analyzed by Joef Vajdak in the Czech Republic and by Marcus Origlieri at the Univerity of Arizona. Note that in the reference book, TSUMEB II by Dr. Georg Gebhard, the species is designated "RRR," i.e. "Extremely rare single occurrence with less than 10 specimens known" (obviously not accounting for later trims). 3 x 3 x 2.5 cm
RARE08-2-15 - Jamesite - $ 450 SOLD Tsumeb, Namibia (TYPE LOCALITY) miniature, 4.3 x 3.5 x 2.8 cm
A specimen rich with small red microcrystals of the rare arsenate Jamesite, from the type locality, in veins mixed with duftite and on contrasting white dolomite. There is more here than appears in the photos, with a seam running into that protected cavity you see A relatively rich piece, overall, compared to the two other specimens I have seen (I admit not many to go by, but that is probably more than most people have handled, again?). Despite reports of later finds at Greek Mines (possibly postmining?), these remain the only Jamesites I have ever seen. Mostly, I admit that I ignore micros by and large - but some have a special romance and beauty to them that get past even my barbarous eyes, especially from the miracle mine of Tsumeb. (TYPE LOCALITY) All Content and Design ©1996-2010 The ArkenstonePowered by http://mineralwebsites.comBy-species Galleries | ||||||
