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Gallery 9 Copper Mineral SpecimensReturn to Mineral Specimen Galleries
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M-061 Malachite stalactite $200 Mashamba West Mine, Kolwezi District, Katanga, Democratic Republic of the Congo 12.3 x 2.3 x 2 cm. A large and fantastically shaped Malachite stalactite from a famous locale. This is one of the more unusual and striking single Malachite stalactites that I've seen. This stalactite has a narrow hollow tube in its center, from the base all the way up to its tip. The specimen also has a matte finish and a striking, bulbous, non-linear form. The D.R.C. is famous for its stalactitic Malachite and specimens from here are highly prized by collectors.
C-230 Copper $95 Iroquois Mine, Mohawk, Keweenaw County, Michigan 7.6 x 6.7 x 2.5 cm. A chunky example of Michigan float Copper, which refers to to glacially transported native Copper. This specimen has visible striations caused by glacial scouring. This same event accounts for the slightly rounded form. Despite this, the specimen still exhibits most of its original crystalline form.
M-067 Malachite crystals on Chrysocolla $85 Bisbee, Warren District, Mule Mountains, Cochise County, AZ 9 x 7.6 x 5.7 cm A brightly-colored specimen of two copper minerals; Chrysocolla & Malachite. This specimen is made up of several generations of Malachite; the first being amorphous & the second consisting of hundreds of of tiny needle-like crystals of a darker hue mixed with blue-green-colored Chrysocolla. A colorful mineral specimen from a noteworthy location.
A-071 Atacamite, Malachite & Halloysite $120 La Farola Mine, Cerro Pintado, Copiapó Province, Atacama Region, Chile 12 x 7 x 4 cm. This attractive, two-sided specimen features numerous lustrous sprays of the copper mineral Atacamite. Accenting the front side of this specimen is a band of off-white Halloysite and a matted covering of needle-like crystals of an unidentified mineral on the lower left portion of the specimen. The rear of this specimen features many sprays of Atacamite on a background of blebby, off-white Halloysite.
A-113 Azurite $475 Malbunka
Copper Mine, Areyonga, Gardiner Range 9.4 x 7 x 4.4 cm An outstanding example of an Azurite “sun” from the Malbunka Copper Mine. The Azurite on this specimen has a beautiful and rich blue color as well as an interesting texture with good (as far as Azurite from this location is concerned) crystallization. The largest Azurite on this specimen measures 7 x 7 cm and is unusually thick; at 2.1 cm it is one of the thickest Azurite nodules that I have seen from this location. 4 or 5 mm in thickness is what you usually get. These Azurite “suns” form in a fashion that is unlike any other Azurite that I've seen. These flattened discs of Azurite are formed between layers of Kaolinite which forces them to grow in a laterally compressed, radiating manner. A top quality example of this material.
A-088 Azurite $95 Malbunka
Copper Mine, Areyonga, Gardiner Range 6.3 x 4.4 x 2.3 cm. These Azurite “suns” from the Malbunka Copper Mine form in a fashion that is unlike any other Azurites that I've seen. These flattened discs of Azurite are formed between layers of Kaolinite which forced them to grow in a laterally compressed, radiating manner. This Azurite on this specimen has a beautiful blue color and an interesting texture. The Azurite is much thicker than was on specimens recovered in earlier years from this famous location.
A-095 Azurite $60 Malbunka
Copper Mine, Areyonga, Gardiner Range 7.6 x 6.1 x 2.9 cm The Azurite “suns” from the Malbunka Copper Mine form in a fashion that is unlike any other Azurites that I've seen. These flattened discs of Azurite are formed between layers of Kaolinite which forced them to grow in a laterally compressed, radiating manner. The Azurites on this specimen have beautiful deep-blue color and an interesting texture.
A-092 Azurite $50 Malbunka
Copper Mine, Areyonga, Gardiner Range 7.6 x 5.1 x 3.8 cm The Azurite on this specimen has a beautiful blue color and an interesting texture. These Azurite “suns” from the Malbunka Copper Mine form in a fashion that is unlike any other Azurites that I've seen. These flattened discs of Azurite are formed between layers of Kaolinite which forced them to grow in a laterally compressed, radiating manner. B-208 Brochantite $50 Mount Oxide Copper Mine, Mount Gordon, Gunpowder District, Mount Isa, Queensland, Australia 8.5 x 4.6 x 4 cm. This specimen features crystals of bright, vividly-colored crystals of Brochantite thickly covering a silceous gossan matrix. This specimen will add a shot of color to your mineral collection.
C-289 amygdular Copper $125 Keweenaw County, MI 10.4 x 9.1 x 2 cm Michigan is well-known for outstanding crystallized Copper specimens. Here we have an example of amygdular Copper. Rounded solid Copper amygdules are rare. This example shows good crystallization. Amygdules form when the gas bubbles or vesicles in volcanic lava (or other extrusive igneous rocks) are in-filled with a secondary mineral such as Calcite, Quartz, Chlorite or one of the zeolite minerals. In this case the mineral is Copper. This example has been cut in half and could be polished if desired.
P-089 Azurite on Prosopite $30 Santa Rosa Mine, Santa Rosa, Municipio de Mazapil, Zacatecas, Mexico 2.2 x 1.5 x 1.3 cm This unusual mineral association is from a find made in the early 1960's. This specimen features subhedral crystals of the copper mineral Azurite in a matrix of Prosopite. Prosopite usually forms as an alteration product of Topaz in Topaz-rich greisens (as in Altenberg, Saxony and Schlaggenwald, Bohemia), and in Cryolite-bearing pegmatites, either as a primary mineral or as an alteration product of Cryolite. What led to the formation of Prosopite in this instance remains a mystery.
A-093 Azurite $50 Malbunka
Copper Mine, Areyonga, Gardiner Range 7 x 5.5 x 3.1 cm The Azurite on this specimen has a beautiful blue color and an interesting texture. These Azurite “suns” from the Malbunka Copper Mine form in a fashion that is unlike any other Azurites that I've seen. These flattened discs of Azurite are formed between layers of Kaolinite which forced them to grow in a laterally compressed, radiating manner.
A-087 Azurite $65 Malbunka
Copper Mine, Areyonga, Gardiner Range 8 x 3.8 x 3.5 cm. These Azurite “suns” from the Malbunka Copper Mine form in a fashion that is unlike any other Azurites that I've seen. These flattened discs of Azurite are formed between layers of Kaolinite which forced them to grow in a laterally compressed, radiating manner. The Azurite on this specimen has a beautiful blue color and an interesting texture. The Azurite is much thicker than was on specimens recovered in earlier years from this famous location.
R-043 Rosasite on Dolomite $75 Bou Beker, Touissit-Bou Beker District, Jerada Province, Morocco 12.3 x 11.7 x 7.4 cm This specimen features many spheres of the Copper carbonate mineral Rosasite on a matrix of pink-colored Dolomite crystals. Some of the Rosasite spheres and some of the Dolomite crystals have a thin coating of clear Gypsum. There are also several amorphous masses of green-colored Malachite present on this specimen.
M-022 Malachite, Chrysocolla & Calcite $60 Katanga Copper Zone, Katanga, Congo 5.5 x 6.7 x 4 cm. This Specimen features the classic Katanga matrix of Chrysocolla and Calcite upon which is perched a cluster of wedge-like Malachites. The wedges are so dense at their centers that they appear black, grading to a velvet fuzz at their tips.
A-096 Azurite $50 Malbunka
Copper Mine, Areyonga, Gardiner Range 7.2 x 5.1 x 3.3 cm The Azurite “suns” from the Malbunka Copper Mine form in a fashion that is unlike any other Azurites that I've seen. These flattened discs of Azurite are formed between layers of Kaolinite which forced them to grow in a laterally compressed, radiating manner. The Azurites on this specimen have beautiful deep-blue color and an interesting texture.
C-185 Copper $75 White Pine Mine, Ontonagon County, Michigan 8.6 x 7 x 1 cm. Here we offer a sheet of native Copper from the White Pine Mine of Michigan. This specimen is as bright as a newly minted penny. This Copper specimen came out of the earth just like this, having formed as a thin seam running through layered shale matrix. The White Pine was one of the country’s largest Copper mines dating back to 1880 and was worked until 1995. Once readily available these “sheet Coppers” are scarce these days.
A-070 Atacamite with Pseudomalachite & Gypsum $95 La Farola Mine, Cerro Pintado, Copiapó Province, Atacama Region, Chile 11 x 8.5 x 3 cm. This attractive matrix specimen features numerous, lustrous sprays of the copper mineral Atacamite accented by minute mounds and balls of the copper mineral Pseudomalachite. Resembling a snow-capped mountain, the top portion of this specimen is a blanketed with Gypsum.
C-113 Cuprite with Chrysocolla $60 Mashamba West Mine, Kolwezi, Katanga, Congo 6 x 5.5 x 3 cm. This matrix specimen of the Copper oxide mineral Cuprite is crowned by a 1.5 x 1.6 x 1.3 cm. pair of interpenetrating Cuprite crystals that have a slight metallic luster and show a hint of red near their termination. The matrix also has a coating of pale bluish Chrysocolla and a minor amount of dark green Malachite, making for a nice contrast of colors. This classic locality is no longer producing these classic Cuprite specimens.
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