ex. Dr. Steve Smale
A brilliantly lustrous ball of stepped stannite crystals, flanked by splaying GEM quartzes at its upper edge, makes this a really outstanding stannite specimen. Usually they are kind alumpy and although great for the species, not much to look at overall. THIS ONE is very aesthetic, though; as well as significant for the rare mineral displayed. The flanking quartzes and golden chalcopyrite to either side simply makes this piece more unique and special than the crowd. In person, the stannite is more lustrous, I should add. Its a hard piece to photograph.
A sharp, BRILLIANTLY COLORFUL chalcopyrite specimen from this classic locale. It has a natural lustre that is so metallic and so bright, it looks chemically induced (but is not!). This specimen features pagoda-like clusters of crystals to 1 cm, in aggregation on massive matrix. It has some damage to the bottom portion, but the upright towers of crystals are the focus. For the locality, a stunning specimen
This is a very aesthetic cluster of brilliantly-metallic chalcopyrites with an unusual reddish-coppery color,perched on quartz-druse on rock matrix. It is much better in person, and comes from an old German collection I have made purchases from. It is , in person, MUCH more impressive and quite different in style from other German chalcopyrite I have seen. Said to be an old specimen
ex. Dr. Eugene Meieran
This is an oldtimer, showing classic twinned sphalerites with a dark but translucent yellow-brown color. The intersecting sphalerite twins are perched on quartz, and accented with sharp and brassy golden chalcopyrite crystals. A fine display quality specimen from this very old mining district, long in the Gene Meieran sulfide collection (his label dates it back more than 30 years).
ex. Robert Nowakowski
Dalnegorsk is known for its rich suite of sulfide mineral species, but among them a great, truly great, chalcopyrite is exceedingly uncommon. THIS is a great one! It is a solid cluster of intergrown crystals, weighing about 3 pounds (1200 grams). The patterning is mesmerizing and I suspect it might be twinned. This is a significant display example of the species, from ANY locality, for size and the interesting patterning. It is certainly from old workings here, probably from the early part of modern collecting in the 1970s and 1980s.
ex. University of Arizona
Because we see so much more production from Naica, good Fluorite from the Zacatecas area is sometimes confused with material from the much more common locales in Naica, and I have found them on occasion mislabelled as such. This large display piece, however, has a decidedly non-Naica look to it. Naica produces octohedra, but not large purple crystals of this color; and the pagoda-like calcite is distinctive here also. This specimen is complete all around and shows off a great contrast of the small but brilliantly metallic chalcopyrite crystals perched upon the large fluorite octohedra. This is an oldtime specimen, and I have seen only smaller examples of the style for sale before. Ex University of Arizona Mineral Museum collection
ex. Harold Urish
This colorful ore sample highlights the bronze chalcopyrite vein along with the iridescent purplish-blue of Covellite. I have never seen more than a speck of covellite from Bisbee before and although massive, this is pound sof it, and very pretty overall. A significant ore sample from a rare portion of the deposit, now long since mined out.
A fairly impressive locality piece, with large chalcopyrites to 2 cm across on quartz matrix. There is some edge wear and peripheral damage to the side chalco's, but this is still a good locality piece. ex. Joe Cilen collection
ex. Ken Hollman
Everybody knows of the famous 1800's-era Bristol Mine for one species: chalcocite. However, it DID produce other minerals, including spectacular iridescent chalcopyrites such as this one. These botryoidal, fanciful growths were commonly known as "blistre ore" or "blister copper" by the miners. This is an extremely good, large, and showy example, with some attached quartz matrix at bottom. It is 3-dimensional, and complete all around except for only a bit of peripheral wear and on ebroken nodule amongst many. S supreb, cabinet sized, display-quality, historic specimen of a rare style of chalcopyrite (I am familiar with it only from Cornwall and Butte, both rarely seen anyhow). It is the rare variety described by Bob Jones in the Bristol Article, Min Record, Vol 32, # 6, page 446, with a photo on page 447, which shows the stalactitic chalcopyriteex. Ken Hollman Collection
A MAJOR old specimen with a HUGE, 7-cm-long chalcopyrite crystal on which rests a cluster of quartz, and then another, smaller but sharper, chalcopyrite! this is a classic old locality, from which specimens seldom turn up today (the mine was shut in 1932). This particular specimen is a stunningly large chalcopyrite for any US locality - I cannot think of a larger crystal from other places in the States. It is in great condition considering its size and age, with just a small amount of edge wear to the patina coating. Note it has not been cleaned. A little chemistry, and that black patina would probably come off to reveal a gleaming golden crystal underneath, making it both big and beautiful.
ex. Dr. Edward David
A gorgeous and LARGE (6.5 inches tall!) silver specimen from this classic locality that looks like a cluster of striking snakes, coiled together. For size, it just bowls you over. Moreover, it is very beautiful not just for the overall form, but because it has a unique patina of minute bornite and chalcopyrite crystals that gives it a "sparkle" in person. It is very different in aspect, thus, from what you normally see. This is a MAJOR Kongsberg of a size we almost never see for sale on the modern market, like what exists only in the major museums by and large.
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