And, as fairly frequently at the Denver Show, Denver resident Ralph Clark put in a case of selections from his fabulous thumbnail collection--with the Montana veszelyite
, Tsumeb mimetite, Chilean proustite, Swiss anatase, etc., etc., of one's dreams.
And I and my fellow thumbnail collectors are always delighted when Ralph Clark puts in a case of his best; at this show we saw 30 of Ralph's most incredibly fine thumbnails, and maybe if I mention particularly his Swiss anatase, Montana veszelyite
, Australian chalcocite, Chilean proustite and South African rhodochrosite, he will someday trade me one of them for my very best Herkimer diamond ...
Allan Young put in a dazzling competitive case of thumbnails, and for his trouble he won a "Trifecta," taking not only the Master award for competitive cases but also the Desautels award for best case in the show and the Lidstrom Trophy for best single specimen (his veszelyite
from the Black Pine mine, Montana).
An extraordinary find of the rare mineral veszelyite
from the Black Pine mine, Philipsburg, Montana was exciting to see.
It was also among the first known occurrences of veszelyite. Recently, nice rosettes of reichenbachite have been found as pseudomorphs after kipushite.
Chrysocolla has been reported with veszelyite (Buttgenbach, 1947).
In the early 1970's, the amateur who found the original material, later named "kipushite," on level 8m in the pillar, was actually searching for veszelyite, the famous old-time occurrence that every collector was then dreaming of finding.
Judging from the original description and from observations of later-recovered specimens, the associations include pseudomalachite (as blue or green nodules), some malachite, hemimorphite, white prisms of pyromorphite, ultramarine-blue microcrystalline masses of veszelyite, yellow and olive-green crusts of vauquelinite, libethenite (as acicular clusters, as small nodules with a radiating internal structure and also as equant to short prismatic crystals to 3 mm isolated on matrix), green pseudomorphs of reichenbachite after kipushite, quartz, and iron oxides.
As with veszelyite, the Cu:Zn ratio is variable due to a complex structure composed of alternating sheets which are different in each species (Piret et al., 1985).
Much less abundant was the well-crystallized ultramarine-blue zinc-copper phosphate which was not positively identified as veszelyite. Guillemin (1956) published an extensive review of copper phosphates, during the preparation of which he had produced many syntheses and so obtained a zincian libethenite, with an X-ray powder pattern "different from that of normal libethenite." Guillemin had performed an X-ray diffraction analysis of the specimen from Broken Hill in the collections of the Ecole des Mines (labeled veszelyite) and found the pattern "identical to that of synthetical zincian libethenite." In 1980 Notebaart and Korowski reported the discovery at Broken Hill of greenish blue globules (smaller than 2 mm) and encrustations in tarbuttite ore.
Veszelyite [(Cu.sup.2+], Zn).sub.3](P[O.sub.4])[(OH).sub.3][multiplied by]2[H.sub.2]O
Allan's Chilean proustite, Tsumeb dioptase, Tur kish kammererite, Mexican acanthite, Congo cuprite; Ralph's Swiss anatase, Brazilian autunite, North Carolina hiddenite; both men's Montana veszelyites