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8 specimens listed
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Chalcocite - classic habit crystals from new find
stock #23.1-657
M Passa Mine, Mindouli District
Pool Department, Republic of Congo (Brazzaville)
7.3 x 6.4 x 2.3 CM (cabinet)
price: $650
Pre Tucson

This specimen is almost all Chalcocite, well-crystalized and with just a little green Copper oxidation giving a nice contrast. The Chalcocite look just like the old classics of Cornwall or Bristol but are from a new find made about 2 years ago in the Congo. All the crystals are in parallel alignment and the condition is excellent as seen. A very choice example from this remarkable discovery.

stock #AX-4-066
Flambeau Mine, Ladysmith, Rusk County
Wisconsin, United States
5.8 x 5.2 x 3.5 CM (cabinet)
price: $450
Spring 23

A pure mass of intergrown Chalcocite crystals most of which have very good iridescence. A modern day classic, this mine produced some very fine Chalcocites over a brief period more than 20 years ago. These will never be found again at this locale. Good Chalcocite crystals are surprisingly rare, most of the best came from very old localities and no place ever produced many or for a long period. This piece looks good on all sides, is solid (no sulfide degeneration) and a very good value for a nice Flambeau.

Chalcocite - classic locality, elongated twinned crystals
stock #21.1-526
Levant Mine, Trewellard, St Just,
Cornwall, England
3.1 x 2.5 x 1.5 CM (thumbnail)
price: $280
Fall 22

An especially fine thumbnail of elongated Chalcocite crystals some showing the cogs-wheel form of twinning. From the classic Cornish locality of Levant, which operated from 1793 to 1930 which produced some of the very best of British Chalcocites. This style is quite uncommon from the mine and presents well from all sides. In excellent condition with well-defined form and esthetic composition.

Chalcocite - iridescent crystals
stock #AX-4-059
Flambeau Mine, Ladysmith, Rusk County
Wisconsin, United States
5.3 x 3.8 x 2.8 CM (small cabinet/ large miniature)
price: $750
New Year 22

A cluster of bright and well-defined crystals with rich patina. Choice modern classic from the Flambeau Mine, these crystals reach to over 3 CM and are complexly intergrown. There have only been two great finds of Chalcocite crystals in the USA, the old Bristol Copper mine in the 1840-50 era and the Flambeau in the mid 1990's. Both locations are finished and will never produce again. The hexagonal disk-like habits on this are twinned crystals which are in excellent condition. Close exam finds only a very small bruise (3mm) and a contact neither of which is easy to spot or distracting. Several smaller crystals seem to be untwinned, there is no matrix. Pure Chalcocite with red, blue and purple hues showing well. This does not have any of the unstable pyrite that sometimes causes decomposition, this is far better than 99.9% of this famed find. Displays well from most any angle.

Bornite pseudo after Chalcocite
stock #14.1-211
Levant Mine, Trewellard, St Just,
Cornwall, England
5.5 x 4.7 x 2.7 CM (small cabinet/ large miniature)
price: $650
Spring 2020

Very fine classic specimen, ex George Robinson collection with sharp, free standing crystals. This specimen is currently pictured on Mindat it is the first specimen in the St Just Bornite section. The shape of the original Chalcocite shows some cyclic twins that are perfectly preserved. Some of the crystals may still have some Chalcocite inside. The exterior shows the patina of Bornite and is quite attractive. In fine condition as seen a choice old classic piece

stock #AX-24-432
Tongshankou Mine, Daye Co., Huangshi Pref.
Hubei Province, China
5 x 2.1 x 1.4 CM (miniature)
price: $875
Winter 2016-17

An especially attractive specimen from the now famed finds at Hubai. Fine patina and form with the treelike structure perched on crude Chalcocite crystal base. These have been found in many forms in this find but this habit is especially nice and quite rare.

stock #AX-19-108
Flambeau Mine, Ladysmith, Rusk County
Wisconsin, United States
4.4 x 2.4 x 2 CM (miniature)
price: $480
Post Tucson 2015

A stacked cluster of sharp, well-formed, slightly iridescent crystals from the famed Flambeau mine. In fine condition, the largest crystals are about 1.5 cm across and show the twinned pseudo hexagonal habit with pyramid terminations. Classic "soot" black with metallic edges in a very distinctive form.

stock #AX-4-063
Flambeau Mine, Ladysmith, Rusk County
Wisconsin, United States
7.5 x 4.5 x 4.3 CM (cabinet)
price: $1600
Spring 2013

Large bright iridescent crystal aggregate, undamaged from finds in the 1990's. Individual complex crystals up to 3.3 CM showing purple, blue and yellow iridescence primarily. Looks better in person, holds well among Chalcocites from any location. Not just black and ugly!