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5 specimens listed
Page   1 |

Chalcocite pseudo after Covellite - Classic USA
stock #13.1-375
Leonard Mine, Butte, Silver Bow County
Montana, United States
3.4 x 3.3 x 2.2 CM (small miniature/ large thumbnail (toenail))
price: $2400


Fantastic form and a killer pseudomorph. This vintage Butte specimen shows perfectly the form of the original Covellite crystals which are almost fully replaced by Chalcocite. It looks like a tiny bit of Covellite may remain on the backside, but if so it is minor. This is an early specimen with excellent provenance, a tattered Roy Hopping (NYC Mineral dealer vintage 1898) label is included. This was also in the collection of Louis Zara (famed NYC collector, author and publisher of the Mineral Digest. His label is also included. The specimen is in exceptional condition, fully undamaged and attractive from almost any angle. Well-crystallized Covellite is remarkably rare worldwide with only two significant localities, both long closed. It is even less common to see a well-defined pseudomorph with sharp crystals like this.
SOLD Covellite- Classic USA
stock #SOLD 16.1-531
Summitville District, Rio Grande County
Colorado, United States
5.8 x 4.2 x 2 CM (cabinet)
price: $0
Spring 2020

Bladed crystals of Covelite are clustered on edge in the classic form from Summitville, Colorad. On this piece the iridescent patina is similar to good specimens from Butte, but has the Colorado form. Crystals are distinct, well separated and sharp, this is nearly pure Covellite just a few tiny bits of adhering matrix. Covellite is a somewhat common mineral but almost always massive. Crystallized Covellite is quite rare as there were only three locations that ever were good sources, at those sites it was still rare. Now all those mines are long gone.
SOLD Covellite with Pyrite Quartz
stock #SOLD 18-AX-30-047
Leonard Mine, Butte, Silver Bow County
Montana, United States
4.8 x 4.3 x 3 CM (miniature)
price: $0
Spring 2020

While Covellite is a fairly common Copper mineral, crystals are very rare and good crystals are really only known from two locales (Italy and Butte) both locales are gone forever, these are true classics. A nice old Leonard mine Covellite with several free standing crystals and choice patina. This has a vintage label (1940 era?) from Continental minerals. The Covellites on this piece are of the thin blade type, very delicate and are well intergrown. The iridescence is a purple to blue with some reddish hints, this displays especially well under strong lighting as the metallic patina is very bright. Much better in person.
Covellite with Pyrite
stock #0195-JM-1294
Leonard Mine, Butte, Silver Bow County
Montana, United States
5.4 x 4.3 x 3.2 CM (cabinet)
price: $750


Several free standing crystals of Covellite on different sides of the Pyrite matrix are showing dark blue patina. From the remarkable collection of John Marshall who worked at the mine from 1950 to 51. John worked as a miner despite his Harvard education he enjoyed the direct contact and collecting during his lunch breaks. His hand painted mark is on the specimen #1294. The crystals are quite lustrous and in rather good but not perfect condition as is typical for this delicate mineral, far better than average. The Pyrite is in both small octahedrons and other more complex pyritohedrons. The Covellites of Butte have always been prized and are hard to find with any quality and often incredibly costly when they are exceptional A good value.
Covellite -iridescent crystals ex. Conklin
stock #16.1-507
Leonard Mine, 3800 foot level, Butte
Montana, United States
3.6 x 2.5 x 2.5 (miniature)
price: $280
new june 17

A fine, sharp, well crystallized Butte Covellite collected in Butte before 1966 by Paul Heissfeld. Comes with Heissfeld and Larry Conklin labels. Larry notes: An excellent mass of large crystals and no matrix. Classic form and habit, very good blue and gold iridescence amid the dark crystals. Covellite crystals of any size are rare and best known from just two localities, both long closed.
5 specimens listed
Page   1 |