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14 specimens found
1 | 2 |

Copper -spinel twinned
stock #18.AX-499
Emke Mine, Onganja, Seiis
Khomas Region, Namibia
3.9 x 1.2 x .4 CM (miniature)
price: $100
Dec 2018

A spire of interlocked spinel twin Copper crystals with side branches and sharp terminations. From the now classic, closed Emke mine at Oganja, this is the style and habit that are distinctive for this locale. No damage, nice patina and especially nice under magnification. Larger examples from this locale are highly desired and now very expensive. This is a choice smaller piece that is perfect and affordable. .
Copper Pseudomorph after Aragonite
stock #17.1-179
Corocoro, Pacajes Province
La Paz, Bolivia
3.4 x 2.2 x 2.7 CM (miniature)
price: $490
Late Summer 2018

Sharp replacement of hexagonal Aragonite crystals by native copper. Excellent form, complete on all sides and with classic hexagonal prisms. Slightly hoppered on flat faces, this is formed of two textbook prisms that intersect on one narrow edge. Usually these pseudos are rather crude, it is very special when such sharp detail is preserved.
Copper with Cuprite
stock #18.1-281
Ray Mine, Ray District, Dripping Springs Mountain, Pinal county
Arizona, United States
6.1 x 5.7 x 4.9 CM (cabinet)
price: $160
Worldwide mix summer

A thin fan like sheet and branching Copper crystals that is partly coated with Cuprite. The Cuprite is in epitaxial crystals and flattened on the Copper. From the Ray mine where many fine Coppers were found, this example is illustrative of the thin vein fillings and coatings that were so significant there. In fine condition and a colorful example, some secondary Copper oxides add a green color to contrast the red Cuprite and metallic Copper hues.
Copper- twinned crystals
stock #18.1-AX-19-164
Itauz Mine, Zhilandy group
Karagandy Province, Kazakhstan
5.5 x .9 x .4 CM (small cabinet/ large miniature)
price: $175
Spring update

Complex twinned crystals in a branching display with fine patina. No damage, a choice example of the great spinel twin habits that have been found in Kazakstan. Looks fine on all sides, a very good value.
Copper with Quartz
stock #18-AX 19-163
Onganja Mine, Windhoek District
Khomas Region, Namibia
5.1 x 2.8 x 1.7 CM (miniature)
price: $350
Spring update

A crystallized sculpture of Copper from the famed Onganja mine that has several crystallized Quartz clusters perched. In fine condition, the Quartz seems to have formed on a Calcite core. A rare association, the tiny Quartz crystals are very clear, adding a sparkling accent. The Copper is in branching crystals with some showing crude spinel twinning and flattened, stretched octahedrons. Quartz is not a common association in these coppers.
Copper-Fine Spinel twins, Herringbone crystals
stock #18.1-117
Phoenix Mine, Phoenix, Keweenaw County
Michigan, United States
5.9 x 2.6 x .7 CM (cabinet)
price: $500
Spring update

Wonderful esthetics! Slender wires in branches holding spinel twinned Copper crystals in Herringbone arrays. A very old specimen from the famed Phoenix mine, in perfect condition. A superb, textbook example of these habits that is much more delicate than most Phoenix specimens. Under magnification it seems a small dab of Silver is present as well as a small modified cube. It is remarkable that this piece has remained intact.
Copper- large crude crystals with Silver
stock #13.1-407
Calumet and Hecla Mine, Calumet, Houghton County
Michigan, United States
4.7 x 3.7 x 3 CM (miniature)
price: $250
Spring 2017

An old specimen from Houghton County with sizable (2 CM) distinct yet crude crystals standing above a mostly Copper matrix. Some sharp faces are seen but overall the crystals are very distorted. A few spots of Native Silver are also seen with magnification.
Copper Pseudomorph after Azurite rosette
stock #15.1-1118-(SM3654)
Copper Rose Mine, Georgetown, Grant County
New Mexico, United States
4 x 2.9 x 2.7 CM (miniature)
price: $320
Spring 2017

A fantastic Copper after Azurite rosette that is sharp, very large and quite old. An early Wards label (likely 1900-20) is included and one from the Charles Noll collection as well. This habit and style is unique to this locality and this specimen perfectly preserves the form of the Azurite crystals and the rose shaped cluster they grew in. Nice patina and in perfect condition.
14 specimens found
1 | 2 |