ex. Phil Scalisi
From a remote copper mining locale, this is a hefty, very rich specimen of sharp chalcocite crystals on matrix. The crystals , to about 1 cm, are intergrown with gypsum and copper ore. Highly unusual, rare material. Ex Scalisi collection
ex. Charlie Key
Chalcocite from the traprock quarries of NJ ?! This is a significant large specimen from a small find of the mid-1990s, which was quickly dispersed among NJ enthusiasts (of which Charlie was one!). It is the richest of the few I have seen, with crystallization over nearly all the surface. The crystals are flat, but sharp, and mostly complete. This is a VERY important and fine New Jersey specimen, and a rarely crystallized copper species for the state.
A superb, inctricately crystallized cluster of the classic, thick chalcocite crystals that once made Cornwall THE worlds's great locality for the species. Rare, today, in any quality. 4.8 x 4.4 x 2.0 cm
Chalcocite from the traprock quarries of NJ ?! This is a significant large specimen from a small find of the mid-1990s, which was quickly dispersed among NJ enthusiasts (of which Charlie was one!). It is the richest of the few I have seen, with crystallization over nearly all the surface. The crystals are flat, but sharp, and mostly complete. This is a VERY important and fine New Jersey specimen, and a rarely crystallized copper species for the state. 12.1 x 6.8 x 4.4 cm
2.0 x 1.2 x 0.7 cm. A SUPERB, CLASSIC, OLD-TIME specimen of a sharp, lustrous, striated, metallic chalcocite prism from the Bristol Copper Mine, Connecticut. 100+ years old, VERY SELDOM AVAILABLE ANYWHERE and some of the very best from anywhere in the world.
2.3 x 1.4 x 1.3 cm. Here is a fabulous thumber for either a thumbnail collector or a Colorado collector: a very sharp TWIN of chalcopyrite with a coating of chalcocite which gives it its blue and gold iridescence. This is from the classic Ouray mining district, and is an old-timer and very hard to find now!
4.7 x 4.0 x 2.7 cm. An excellent and showy 1.4 cm cluster of sharp, matte-finish, dark brown chalcocite crystals attractively set on milky quartz matrix from the famous Butte District of Montana. Sharp crystals of chalcocite from Butte are relatively uncommon and this is a good one. Ex. Phil Scalisi and George Elling Collections.
6.8 x 4.0 x 4.0 cm. An OLD-TIME, CLASSIC and showy combination piece from the site of the first United States lead mining "rush" in the 1820s of royal-blue azurite, malachite, gray chalcocite and bright, brassy chalcopyrite in a box-work matrix of chert. RARE and old material, seldom available. Ex. DuFoe and George Feist Collections.
2.9 x 2.3 x 2.1 cm. From the exciting Wisconsin finds around 12 years ago - a large thumber with sharp crystals, showing mostly golden and coppery tones. Crystallized chalcocites are rare, so this find was highly celebrated and the specimens were snapped up quickly.
3.6 x 2.5 x 2.0 cm. A sharp heart-shaped twin (1.4 cm), of rare habit, surmounts this small miniature matrix specimen. There is damage elsewhere on the specimen and also a small tiny ding on one side of the twinned crystal, but it is still a great little reference specimen for this new find, showing a super twin habit!
3.4 x 2.0 x 1.7 cm. A brilliant cluster of sharp crystals to about 1 cm. Tim Blackwood Collection.
3.2 x 2.3 x 2.2 cm. This textbook crystal is the most robust crystal BY FAR that I have seen from the find, with a sharp, fat wedge-shaped form, and complete terminations on all sides. In fact, it is even a floater! The bottom is microcrystallized, and so this is literally complete all around. This is a world-class chalcocite! For habit, however, it is really quite unique...the robust form of the best Tsumeb chalcocite I have seen, but with lustre of a Bristol chalcocite.
3.6 x 2.7 x 2.7 cm. This specimen is a competition-level, complete-all-around STUNNING miniature, with a cluster of three intergrown crystals to 3 cm long, perched on a small knob of matrix. It is STUNNING, visually, both for the lustre and the sharp geometry of the piece. Complex beveled terminations throw off reflections in every direction. There is no damage except a teeny contact atop and a few contacts or breaks on the bottom peripheral crystals, while the major crystals are not only upright, but astoundingly 3-dimensional (more so in person!). This is a MAJOR miniature for the species, to my eye better in absolute quality than some Bristol or Wisconsin locality specimens I have seen over the years.
3.5 x 3.3 x 2.1 cm. SUPER SHARP crystals to 1.7 cm, with a wet-looking, waxy lustre, jet out from this knob of matrix to make a very "sexy" miniature specimen! This is a stunning piece, with 3-dimensionality and aesthetics that make it stand out among any chalcocites. But for a new locale, it is all the more special.
3.5 x 2.5 x 1.5 cm. A brilliantly metallic cluster with crystals to 1.5 cm, shooting off the top. Pristine display face, minor contact on the sides only.
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