ex. Marshall Sussman
We do not see a lot of copper, from the Tsumeb mine, all things considered. This particular specimen features an interlinked chain of elongated copper crystals growing attractively on contrasting matrix, where the copper has been replaced by cuprite. It is dramatic and very interesting, and I have not seen another specimen of this replacement from Tsumeb in such size and richness (only as small, isolated replacements). ex Marshall Sussman Tsumeb collection.
A modern classic from the now-famous mine in Russia which has produced the most surprising cuprite find , and one of the best new finds, of recent years. The mine is winding through the oxide zone and its lifetime is now verylimited. The last truly great pocket of cuprites of this quality was found in december of 2010, I am reliably told (and this comes from that find, a "holdback" by a dealer there). The crystals are exceptionally bright and splendent, slightly translucent and of a deep red color. The piece is complete 360 degrees around and displays DRAMATICALLY from several angles, with about the brightest lustre of any that were found here; and unusually good aesthetics. Joe Budd Photos.
ex. California Institute of Technology
A sharp and uusual replacement of complex cuprites to 7mm, replaced completely by copper, and on a copper matrix. Extremely rare, although reported classic for this locality. I personally had not seen another as rich as this. An old specimen from the Cal Tech collection, bequeathed by Harry Ziesemer. From the number, you know it was been there a LONG time (probably 75-80 years at least). From the Cal Tech collections, by authorised exchange to a private collector a few years ago. Joe Budd Photos.
This producing mine has produced some amazing things during its short , recent run. This is a gorgeous, very bright small cabinet piece with crystals to 1.8 cm, from the fall-2011 finds here of this highly unusual pseudomorph (replacement) : copper has completely replaced the earlier crystals of cuprite, preserving their form and making for a beautiful specimen at the same time. This piece has a surface sparkle to it, caused by a later generation of microscopic copper deposition, that is hard to capture in photos without seeming to "over-light" the shots. So , in person, it is correct in this color but is even more sparkly and lively, compared to most copper specimens. I have never seen such sharp copper replacements after cuprite in this size, from other locales. And this is one of the better large plates of this style for overall aesthetics. No more have come out since, by the way - and the mine is rapidly burning through its specimen-rich oxidation zone. Joe Budd photos.
ex. Desmond Sacco
Among the rarest of the rare of beautiful Tsumeb mineral combinations, are these gorgeous, blood-red chalcotrichite-included cerussites. I am told that they were only found twice in the mine, for the last time during the early 1970s. Fine specimens that are more than just smears of color are exceedingly rare and hard to obtain, and treasured by the Tsumeb collectors who have them (as a lot, Tsumeb collector specialists being extremely possessive of ANYthing unique and pretty both). This is one of the finest thubmnail-sized examples I have seen amidst handling a number of major Tsumeb and thumbnail collections over the years: It is very elegant; shows classic cerussite morphology whereas most are etched or lumpy in form; and is complete all around 360 degrees. A bit of associated malachite adds contrast and makes this a more attractive thumbnail specimen overall. Although pricey, perhaps, there is nothing like this from any other occurrence on the planet, and these remain a uniquely Tsumeb combination. The rich color and waxy cerussite lustre , taken together, really stands out. ex Desmond Sacco Thumbnail Collection
ex. Harold Urish
This specimen is an intergrowth of copper, malachite and cuprite. The copper takes on a dark, reddish-brown patina where it coats the copper. Uncoated copper has a fresh coloration. These darker colors are offset by rich green malachite overgrowth of copper. Although crystallization is at a minimum, the riot of colors makes this a beautiful specimen and it is significant for the locality as well
ex. Wendell E. Wilson
Magnificent group of stacked Cuprite octahedrons, the largest of which is .7cm on edge. The luster is a beautiful brushed metallic silver, and the modified edges of the crystals add even more drama to the piece. Naturally, there is some contacting along the back, but it is insignificant. When you see how fantastic these Cuprites look as they glow red with transmitted light, you can appreciate even more what a first-rate specimen this is.
ex. Wendell E. Wilson
Shattuckite is normally found as crusts or small acicular radiating sprays. I hear that once, in the early 1980s, they found a pocket of these wild pseudomorphs after cuprite. I have seen 3 of them in my lifetime, only. This is the largest and sharpest by far of those. To find such a large shattuckite in the form of a pseudomorph, or in any form for that matter, is truly extraordinary. The waxy-lustre and the strong blue color is very attractive, and the well-terminated faces show nicely in front (though there are a few rougher faces in back). Really quite a remarkable specimen on many levels and certainly a major thumbnail of unique value.
ex. Dr. Edward David
ex. Martin Zinn
This is a unique specimen of intergrown copper and cuprite forming a large stalactite, with crystals of both seemingly intermixed but with cuprite the predominant mineral showing on the surface. The color is thus a deep red hue in good lighting, and it is much more attractive than appears in the photos. The piece is complete all around and 3-dimensional! It came out of the first collection of Dr. Ed David.
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