-
Copper
Dzhezkazgan Mine, Kazakhstan
8 mm (Author: ploum)
-
Copper
Isle Royale Mines, Houghton, Houghton Co., Michigan, USA
8x7 cm.
The old label from 1904 (Author: supertxango)
-
Copper
Isle Royale Mines, Houghton, Houghton Co., Michigan, USA
8x7 cm.
Fot. & Col. Juan Hernandez.
Adquired in July of 2007. (Author: supertxango)
-
Copper
Laurium Mine, Laurium, Houghton County, Michigan, USA
83 x 77 x 30 mm (Author: GneissWare)
-
Copper
Michigan, USA (no more detailed information, sorry)
Height 60 mm (Author: Tobi)
-
Copper
Northwestern Mine, Central, Keweenaw County, Michigan, USA
4.9 x 3.4 x 3.1 cm
The Northwestern Mine consists of 4 shafts and at least 1 adit. The Northwestern Mining Company was organized in 1845 and then reorganized in 1848. Work continued until 1857 and resumed again in 1863. All work ceased in 1865 and was absorbed by the Central Mining Company shortly after. 313,000 lbs. of refined copper was recovered from the mine. Copper, silver, analcime, and prehnite can be found on the poor-rock piles. Ref mindat.org (Author: Don Lum)
-
Copper
Northwestern Mine, Central, Keweenaw County, Michigan, USA
4.9 x 3.4 x 3.1 cm
The Northwestern Mine consists of 4 shafts and at least 1 adit. The Northwestern Mining Company was organized in 1845 and then reorganized in 1848. Work continued until 1857 and resumed again in 1863. All work ceased in 1865 and was absorbed by the Central Mining Company shortly after. 313,000 lbs. of refined copper was recovered from the mine. Copper, silver, analcime, and prehnite can be found on the poor-rock piles. Ref. mindat.org (Author: Don Lum)
-
Copper
Ojibway Mine, Ojibway, Keweenaw County, Michigan, USA
4.3 x 3.3 cm (Author: Don Lum)
-
Copper
Onganja Mine, Seeis, Windhoek District, Namibia
4.0 x 7.2 cm
A branching group of elongated dodecahedrons, lightly coated with cuprite and minor malachite. (Author: crosstimber)
-
Copper
Oumjrane Mine, Alnif, Tarhbalt, Er Rachidia Province, Morocco
3.5 x 8.0 cm.
An elongated plate of native copper with small octahedral crystals and a light coating of green malachite. (Author: crosstimber)
-
Copper
Phoenix Mine, Keweenaw Co., Michigan
6.3 x 7.5 cm (Author: crosstimber)
-
Copper
Phoenix Mine, Phoenix, Keweenaw County, Michigan, USA
5.0 x 3.0 cm (Author: Don Lum)
-
Copper
Phoenix Mine, Phoenix, Keweenaw County, Michigan, USA
5.0 x 3.0 cm (Author: Don Lum)
-
Copper
Poteryaevskoe Mine, Rubtsovskoe Cu-Zn-Pb deposit, Rudnyi Altai, Western-Siberian Region, Russia
5.0 x 6.7 cm
Sharply crystallized arborescent copper. The crystals are predominantly distorted octahedrons and have a nice reddish cuprite patina (Author: crosstimber)
-
Copper
Ray Mine, Pinal County, Arizona, USA
5.3 x 4.0 cm (Author: Don Lum)
-
Copper
Relistian Mine, Gwinear, Cornwall, England
2.9 x 4.2 cm.
Back side of the above specimen. (Author: crosstimber)
-
Copper
Relistian Mine, Gwinear, Cornwall, England
2.9 x 4.2 cm.
An arborescent group of well-defined crystals. (Author: crosstimber)
-
Copper
Rubtsovskoe Cu-Zn-Pb deposit, Rudnyi Altai, Altaiskii Krai, Western-Siberian Region, Russia
3,5x2,5x1,5 cm
Crystallized, sculptural Copper. (Author: Simone Citon)
-
Copper
San AgustÃn Mine, Corocoro, Pacajes Province, La Paz Department, Bolivia
87 mm x 29 mm x 11 mm
Mindat.org Photo of the Day - 29th Nov 2011 (Author: Carles Millan)
-
Copper
San AgustÃn Mine, Corocoro, Pacajes Province, La Paz Department, Bolivia
87 mm x 29 mm x 11 mm
Back view (Author: Carles Millan)
-
Copper
Sar Cheshmeh (Sarcheshmeh) Mine, Pariz, Kerman Province, Iran
4.5 cm (Author: h.abbasi)
-
Copper
Tsumeb Mine, Tsumeb, Otavi, Namibia
5x2,2x1,5 cm
Old sample of Tsumeb Copper. (Author: Simone Citon)
-
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
5.1 x 4.8 cm (Author: Don Lum)
-
Copper ( spinel twins )
New Cornelia Mine, Ajo District, Pima County, Arizona, USA
153 x 121 x 106 mm
ex. Dr. David Roter collection;
ex. Williams Minerals specimen;
ex. Royal C. Gould collection (Author: GneissWare)
-
Copper (variety native copper)
New Cornelia Mine, Ajo, Little Ajo Mountains, Ajo District, Pima County, Arizona, USA
73 mm x 53 mm x 14 mm (Author: Don Lum) -
Copper - El Horcajo, Ciudad Real, Spain.
Field of view:1.6 mm (Author: Rewitzer Christian)
-
Copper after Aragonite
Corocoro, Pacajes Province, La Paz Department, Bolivia
3.0 x 3.7 cm (Author: am mizunaka) -
Copper after Azurite
Chino Mine, Santa Rita, Santa Rita District, Grant County, New Mexico, USA
44 mm x 38 mm x 32 mm (Author: Don Lum) -
Copper after Cuprite
Poteryaevskoe Mine, Rubtsovsky District, Altai Krai, Russia
175 mm x 115 mm x 105 mm (Author: Don Lum) -
Copper alterated to malachite and cuprite xls. 6 cm aggregate from Mina mine, Marsberg, Sauerland, Westphalia. (Author: Andreas Gerstenberg)
-
Copper and Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
45x30mm (Author: Heimo Hellwig) -
Copper and Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
45x30mm (Author: Heimo Hellwig) -
Copper and Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
50x35mm (Author: Heimo Hellwig) -
Copper and Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
50x35mm (Author: Heimo Hellwig) -
Copper and Malachite
Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region, Morocco
190 X 70 mm (Author: Manuel Mesa) -
Copper and Malachite
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona, USA
3.2 × 2.4 × 0.8 cm (Author: Jordi Fabre) -
Copper and Pyrite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
46mm x 25mm (Author: Heimo Hellwig) -
COPPER CATHODE PROCESSING
The journey of Copper from electrolyte to a marketable product culminates in the crucial post-electrowinning phase at the Copper cathode plant. Once the electrowinning cycle was complete, the cells yielded crude Copper cathodes – substantial Copper sheets adhering to reusable stainless steel blanks. The initial, highly mechanized step involved the precise removal of these Copper sheets. Automated stripping machines were employed, designed to efficiently peel the deposited Copper from the inert cathode blanks without damaging either the valuable Copper or the blanks, which were immediately returned to the electrolytic cells for reuse.
After separation, these raw Copper sheets, often referred to as full plates, underwent further refinement. They were then conveyed to a trimming station where hydraulic shears or guillotines cut them to precise, standardized dimensions. This sizing ensured uniformity for subsequent handling, packaging, and adherence to customer specifications. While the electrowinning process itself yielded high-purity Copper, a final surface preparation, usually a thorough rinse with demineralized water, was performed to remove any residual electrolyte, dust, or minor surface impurities. This step ensured the pristine quality and appearance of the final product.
Finally, the prepared Copper cathodes were systematically stacked. They were typically stacked horizontally, often on pallets, in precise numbers – commonly 20 to 50 sheets per stack, depending on the cathode thickness and desired bundle weight. These stacks were then bound with steel strapping, ready for weighing, quality inspection, and dispatch to various industries worldwide.
To transform these cathodes into various Copper products, they were subjected to further processing at facilities exterior to the mine. This usually involved melting the cathodes in a shaft furnace, followed by continuous casting and rolling. The molten Copper was cast into a suitable form, often a thick slab or strip, which was then passed through a series of rolling mills. This mechanical working reduced the thickness of the Copper, enhances its grain structure, and improved its mechanical properties; ultimately producing high-quality Copper sheets of the desired gauge and finish, maintaining the exceptional 99.99% purity.
Original photos courtesy of Salvador Rivera (Author: silvia)
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Copper crystals
Copper Creek Mine, Batchawana Bay, Sault Ste Marie, Ontario, Canada
7x5x3.5 cm (Author: Joseph DOliveira)
-
Copper in agate (lacquered slab)
Calumet & Hecla Mine #21 , Calumet, Calumet Township, Houghton Co., Michigan, USA
5.5 x 4.3 x 0.9 cm
An underground copper mine consisting of 96 levels with 16 incline shafts and one vertical shaft (Red Jacket). Formed from the consolidation of the Calumet, Hecla, Portland, and Scott Mining Cos. in 1871. In 1923 the Allouez, Ahmeek, Centennial, Calumet and Hecla, and Osceola Mining Cos. merged to form the Calumet and Hecla Consolidated Copper Mining Co. All operations ceased in 1968 following a labor strike. Excellent mineral collecting, especially at #9, 10, and 12. ref mindat.org (Author: Don Lum)
-
Copper in agate (lacquered slab)
Calumet & Hecla #21 Mine, Calumet, Calumet Township, Houghton Co., Michigan, USA
5.5 x 4.3 x 0.9 cm
An underground copper mine consisting of 96 levels with 16 incline shafts and one vertical shaft (Red Jacket). Formed from the consolidation of the Calumet, Hecla, Portland, and Scott Mining Cos. in 1871. In 1923 the Allouez, Ahmeek, Centennial, Calumet and Hecla, and Osceola Mining Cos. merged to form the Calumet and Hecla Consolidated Copper Mining Co. All operations ceased in 1968 following a labor strike. Excellent mineral collecting, especially at #9, 10, and 12. ref mindat.org (Author: Don Lum)
-
Copper in calcite
Phoenix Mine, Keweenaw Co., Michigan
3.4 x 5.3 cm (Author: crosstimber)
-
Copper in Gypsum
Mission Mine, Mission complex, San Xavier, Pima mining district, Sierrita Mountains, Pima County, Arizona, USA
18 x 13 x 5 mm (Author: Rob Schnerr) -
Copper in Quartz (variety chalcedony)
Obi Islands, North Maluku Province, Indonesia
112 mm x 107 mm x 87 mm (Author: Don Lum)Copper in Quartz (variety chalcedony)
Obi Islands, North Maluku Province, I -
Copper on Calcite included with Cuprite
Czar Mine, Warren District, Bisbee, Cochise County, Arizona, USA
73 x 60 x 15 mm (Author: GneissWare)
-
Copper on Dolomite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
61mm x 52mm x 12mm (Author: Heimo Hellwig) -
Copper on Prehnite
Adventure Mine, Greenland, Greenland Township, Ontonagon County, Michigan, USA
66 x 40 x 39 mm (Author: GneissWare) -
Copper ps. after cuprite
Poteryaevskoe Mine, Rubtsovskoe Cu-Zn-Pb deposit, Rudnyi Altai, Western-Siberian Region, Russia
2.8 x 3.0 cm
Sharp pseudomorphs of native copper after octahedral cuprite crystals. (Author: crosstimber)
-
Copper ps. aragonite
Corocoro, Pacajes Province, La Paz Department, Bolivia
24 mm tall x 17 mm wide (Author: Carles Millan)
-
Copper ps. aragonite
Corocoro, Pacajes Province, La Paz Department, Bolivia
24 mm tall x 17 mm wide (Author: Carles Millan)
-
Copper ps. aragonite
Corocoro, Pacajes Province, La Paz Department, Bolivia
24 mm tall x 17 mm wide (Author: Carles Millan)
-
Copper ps. aragonite
Corocoro, Pacajes Province, La Paz Department, Bolivia
24 mm tall x 17 mm wide (Author: Carles Millan)
-
Copper pseudomorf over Aragonite
Mina San Agustin, Corocoro, Pacajes, La Paz, Bolivia
7x3 cm (Author: Enrique Llorens)
-
Copper pseudomorph after Aragonite
Corocoro, Pacajes Province, La Paz Department, Bolivia
2.8 x 2.3 x 1.4 cm
A classic pseudomorph of Copper after Aragonite. It shows a floater cyclic twinned Aragonite crystal, with a hexagonal shape, replaced by copper with some Malachite alteration. (Author: xdxucn)
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Copper pseudomorph after cuprite
Block 1-1, Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia
4.3 x 3.0 cm (Author: Don Lum)
-
Copper pseudomorph after cuprite
Block 1-1, Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia
4.3 x 3.0 cm (Author: Don Lum)
-
Copper pseudomorph after cuprite
Block 1-1, Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia
4.3 x 3.0 cm (Author: Don Lum)
-
Copper pseudomorph after Cuprite
Poteryaevskoe Mine, Altaiskiy Kray, Western Siberian Region, Russia
6.2 x 5.2 x 4.5 cm (Author: Don Lum)
-
Copper pseudomorph after Cuprite
Poteryaevskoe Mine, Altaiskiy Kray, Western Siberian Region, Russia
6.2 x 5.2 x 4.5 cm (Author: Don Lum)
-
Copper pseudomorph after Cuprite
Poteryaevskoe Mine, Altaiskiy Kray, Western Siberian Region, Russia
6.2 x 5.2 x 4.5 cm (Author: Don Lum)
-
Copper pseudomorph after Cuprite
Poteryaevskoe Mine, Altaiskiy Kray, Western Siberian Region, Russia
6.2 x 5.2 x 4.5 cm (Author: Don Lum)
-
Copper pseudomorph after Cuprite
Poteryaevskoe Mine, Altaiskiy Kray, Western Siberian Region, Russia
6.2 x 5.2 x 4.5 cm (Author: Don Lum)
-
Copper pseudomorph after Cuprite
Poteryaevskoe Mine, Altaiskiy Kray, Western Siberian Region, Russia
6.2 x 5.2 x 4.5 cm (Author: Don Lum)
-
Copper pseudomorph after Cuprite
Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia
4.9 x 4.8 x 3.1 cm (Author: Don Lum)
-
Copper pseudomorph after Cuprite
Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia
4.9 x 4.8 x 3.1 cm (Author: Don Lum)
-
COPPER RECOVER AND COPPER RICH SOLUTION
The images on the left showcase the heap leach pads, equipped with a sprinkler system, and the associated collection ponds containing the leached Copper solution. In the center, a simplified diagram illustrates the Copper extraction process. The upper photo on the right displays the solvent extraction plant (left) and the electrolytic plant (right). Finally, the bottom right-hand photo captures a Copper-rich solution just before it enters the second phase (stripping) at the solvent extraction plant – notice the stirrer assembly.
The heart of the hydrometallurgical process at Milpillas was heap leaching. On specially constructed, impermeable pads, the crushed ore was irrigated with a dilute sulfuric acid solution, known as the lixiviant. As the acid solution percolated through the ore pile, it selectively dissolved the Copper minerals, forming a Copper-rich solution called the pregnant leach solution (PLS). The efficiency of this stage depended on several factors, including the permeability of the ore heap, the concentration of the acid, and the contact time between the lixiviant and the Copper minerals. The Milpillas mine specifically targeted soluble Copper minerals, making heap leaching an ideal and cost-effective method for their extraction.
Following the leaching process, the pregnant leach solution, now laden with dissolved Copper, was directed to the solvent extraction (SX) plant. Solvent extraction is a purification and concentration step. In this stage, the PLS is mixed with an organic based solvent (i.e., alkyl Salicylaldoximes), which have a strong affinity for Copper ions. The Copper ions transfer from the aqueous PLS to the organic phase, leaving behind impurities in the aqueous phase now called the raffinate. This process effectively separates Copper from other undesirable elements that might have been leached from the ore. After the Copper is loaded into the organic solvent, the loaded organic phase is then stripped with a strong sulfuric acid solution, which reverses the process, transferring the concentrated Copper ions back into an aqueous solution. This resulting highly purified and concentrated Copper solution is known as the electrolyte. The final electrolytic cells then deposited high-purity Copper onto cathodes, a process that relied on a consistent and clean electrolyte composition to achieve "Grade A cathodic Copper."
Original photos courtesy of Jose Vazquez, diagram by Silvia. (Author: silvia)
-
Copper related mineral (I think) (Author: Pierre Joubert)
-
Copper related mineral on quartz. (Author: Pierre Joubert)
-
Copper with Calcite
La Farola Mine, Cerro Pintado, Las Pintadas District, Tierra Amarilla, Copiapó Province, Atacama Region, Chile
58mm x 42mm x 40mm (Author: Firmo Espinar) -
Copper with Calcite
La Farola Mine, Cerro Pintado, Las Pintadas District, Tierra Amarilla, Copiapó Province, Atacama Region, Chile
58mm x 42mm x 40mm (Author: Firmo Espinar) -
Copper, basalt
Lake Superior copper district, Keweenaw County, Michigan, USA
105 mm x 105 mm x 25 mm (Author: Robert Seitz) -
Copper, Calcite
Cliff mine, Phoenix, Keweenaw Co., Michigan, USA
7.4 x 3.7 cm
The Scorpion (Author: Don Lum)
-
Copper, Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
90x110x30mm (Author: Heimo Hellwig) -
Copper, Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
90x110x30mm (Author: Heimo Hellwig) -
Copper, Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
90x110x30mm (Author: Heimo Hellwig) -
Copper, Calcite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
90x110x30mm (Author: Heimo Hellwig) -
Copper, Calcite
Onganja (Emke) Mine, Helen Farm 235, Onganja mining area, Seeis, Windhoek District, Khomas Region, Namibia
41 mm x 27 mm x 21 mm (Author: Don Lum) -
Copper, Calcite
Onganja (Emke) Mine, Helen Farm 235, Onganja mining area, Seeis, Windhoek District, Khomas Region, Namibia
41 mm x 27 mm x 21 mm (Author: Don Lum) -
Copper, Caledonia Mine, Mass City, Ontonagon County, Michigan, U.S.A. 12 x 7 x 6 cm. (Author: Lumaes)
-
Copper, Caledonia Mine, Mass City, Ontonagon County, Michigan, U.S.A. 12 x 7 x 6 cm. (Author: Lumaes)
-
Copper, Caledonia Mine, Mass City, Ontonagon County, Michigan, U.S.A. 12 x 7 x 6 cm. (Author: Lumaes)
-
Copper, Caledonia Mine, Mass City, Ontonagon County, Michigan, U.S.A. 12 x 7 x 6 cm. (Author: Lumaes)
-
Copper, Cerussite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
40x30x25mm (Author: Heimo Hellwig) -
Copper, Cerussite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
40x30x25mm (Author: Heimo Hellwig) -
Copper, Cerussite
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
40x30x25mm (Author: Heimo Hellwig) -
Copper, Clinochlore
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
(Author: am mizunaka) -
Copper, Clinochlore
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
3.1 x 2.2 cm (Author: am mizunaka) -
Copper, Cuprite
Rubtsovskoe Cu-Zn-Pb Deposit, Rudnyi Altai, Altaiskii Krai, Western-Siberian Region, Russia
6.0 x 3.0 cm (Author: Don Lum)
-
Copper, cuprite, malachite.
MapimÃ, Durango, Mexico.
size:9x5cm (Author: javmex2)
-
Copper, Cuprite, Malachite, Calcite
Rudabánya, Kazincbarcika District, Borsod-Abaúj-Zemplén, Hungary
14 x 14 cm (Author: Gerhard Brandstetter)Copper, Cuprite, Malachite, Calcite
Rudabánya, Kazincbarcika District, Borsod-Abaúj-Zemplén, H -
Copper, Cuprite, Quartz
Ojuela Mine, MapimÃ, Municipio MapimÃ, Durango, Mexico
20 x 18 x 15 mm (Author: Rob Schnerr) -
Copper, Cuprite
Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire)
46 mm x 38 mm x 27 mm (Author: Don Lum) -
Copper, Cuprite
Itauz Mine, Dzhezkazgan, Karaganda Region, Kazakhstan
62 mm x 25 mm 16 mm (Author: Don Lum) -
Copper, Cuprite
Impruneta, Metropolitan City of Florence, Tuscany, Italy
72 x 35 mm (Author: Sante Celiberti) -
Copper, Datolite
Mohawk Mine, Mohawk, Keweenaw County, Michigan, USA
21.5 x 15.0 x 11.0 cm
Copper crystals in datolite
ex Robert W. Hauck
ex Robert Nowakowski
collected in 1969 (Author: Don Lum)
-
Copper, Datolite
Mohawk Mine, Mohawk, Keweenaw County, Michigan, USA
21.5 x 15.0 x 11.0 cm
Copper crystals in datolite
ex Robert W. Hauck
ex Robert Nowakowski
collected in 1969
"Predator" (Author: Don Lum)
-
Copper, Epidote, Calcite
Lake Superior copper district, Keweenaw County, Michigan, USA
140 mm x 90 mm x 25 mm (Author: Robert Seitz) -
Copper, Epidote, Calcite
Lake Superior copper district, Keweenaw County, Michigan, USA
140 mm x 90 mm x 25 mm (Author: Robert Seitz) -
Copper, Malachite, Gypsum
Campiglia Marittima, Campigliese, Livorno Province, Toscana, Italy
91 x 36 mm (Author: Sante Celiberti) -
Copper, Malachite, Gypsum
Fenice Capanne Mine, Massa Marittima, Grosseto Province, Tuscany, Italy
75 x 60 mm (Author: Sante Celiberti) -
Copper, Malachite, Gypsum
Fenice Capanne Mine, Massa Marittima, Grosseto Province, Tuscany, Italy
75 x 60 mm (Author: Sante Celiberti) -
Copper, Malachite, Gypsum
Fenice Capanne Mine, Massa Marittima, Grosseto Province, Tuscany, Italy
16 x 5,5 cm (Author: Sante Celiberti) -
Copper, Malachite, Gypsum
Fenice Capanne Mine, Massa Marittima, Grosseto Province, Tuscany, Italy
90 x 76 mm (Author: Sante Celiberti) -
Copper, Malachite
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona, USA
36 mm x 34 mm x 10 mm (Author: Don Lum) -
Copper, Malachite
Montecatini Mine, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy
78 x 52 mm (Author: Sante Celiberti) -
Copper, Malachite
Impruneta, Metropolitan City of Florence, Tuscany, Italy
14,5 x 12,5 cm (Author: Sante Celiberti) -
Copper, Malachite
Roccatederighi, Roccastrada, Grosseto Province, Tuscany, Italy
72,3 x 54,5 mm (Author: Sante Celiberti) -
Copper, Malachite
Campiglia Marittima, Campigliese, Livorno Province, Toscana, Italy
75 x 47 mm (Author: Sante Celiberti) -
Copper, Malachite
Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region, Morocco
110 mm x 70 mmx 20 mm (Author: Don Lum) -
Copper, native
Käusersteimel mine, Kausen, Siegerland, Rhineland-Palatinate, Germany.
6 x 5 cm (Author: Andreas Gerstenberg)
-
Copper, native
Segen Gottes mine, Gersdorf, Freiberg district, Erzgebirge, Saxony, Germany.
1 x 1/2 x 0,4 cm (Author: Andreas Gerstenberg)
-
Copper, Quartz
White Pine Mine, White Pine, Ontanagon County, Michigan, USA
4.6 x 2.8 cm
On one end of this specimen the copper crystals are cubic in habit and form a stacked chain. The other end is composed of spongy copper wires.
ex A.E. Seaman Mineral Museum (Author: Don Lum)
-
Copper, Quartz
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
4.6 x 2.8 cm
On one end of this specimen the copper crystals are cubic in habit and form a stacked chain. The other end is composed of spongy copper wires.
ex A.E. Seaman Mineral Museum (Author: Don Lum)
-
Copper, Quartz
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
4.6 x 2.8 cm
On one end of this specimen the copper crystals are cubic in habit and form a stacked chain. The other end is composed of spongy copper wires.
ex A.E. Seaman Mineral Museum (Author: Don Lum)
-
Copper, Quartz
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
4.6 x 2.8 cm
On one end of this specimen the copper crystals are cubic in habit and form a stacked chain. The other end is composed of spongy copper wires.
ex A.E. Seaman Mineral Museum (Author: Don Lum)
-
Copper, Silver, Prehnite, Calcite
Lake Superior copper district, Keweenaw County, Michigan, USA
100 mm x 80 mm x 60 mm (Author: Robert Seitz)Copper, Silver, Prehnite, Calcite
Lake Superior copper district, Keweenaw County, Michigan, -
Copper, Silver, Prehnite, Calcite
Lake Superior copper district, Keweenaw County, Michigan, USA
100 mm x 80 mm x 60 mm (Author: Robert Seitz)Copper, Silver, Prehnite, Calcite
Lake Superior copper district, Keweenaw County, Michigan, -
Copper.
HerrerÃas Mine, Puebla de Guzmán, Huelva, Andalusia, Spain
71x44x8 mm.
(Author: Fermin Clemente)
-
Copper. Belmonte. Asturias. Spain. 3 cm. (Author: nimfiara)
-
Copper
(Author: Dale Hallmark)
-
Copper
(Author: Joseph DOliveira)
-
Copper
10x5x6 cm''s
(Author: Joseph DOliveira)
-
Copper
Central Mine, Central, Keweenaw Co., Michigan, USA
60 mm x 38 mm x 16 mm (Author: Carles Millan)
-
Copper
Lake Superior Copper District, Michigan
100 mm x 50 mm x 40 mm
(Author: Robert Seitz)
-
Copper
Lake Superior Copper District, Michigan
100 mm x 50 mm x 40 mm
(Author: Robert Seitz)
-
Copper
San AgustÃn Mine, Corocoro, Pacajes Province, La Paz Department, Bolivia
54 mm x 49 mm x 26 mm (Author: Carles Millan)
-
Copper
San AgustÃn Mine, Corocoro, Pacajes Province, La Paz Department, Bolivia
54 mm x 49 mm x 26 mm (Author: Carles Millan)
-
Copper
San AgustÃn Mine, Corocoro, Pacajes Province, La Paz Department, Bolivia
87 mm x 29 mm x 11 mm
Mindat.org Photo of the Day - 29th Nov 2011 (Author: Carles Millan)
-
Copper
San AgustÃn Mine, Corocoro, Pacajes Province, La Paz Department, Bolivia
38 mm x 35 mm (Author: Carles Millan)
-
Copper
San AgustÃn Mine, Corocoro, Pacajes Province, La Paz Department, Bolivia
38 mm x 35 mm (Author: Carles Millan)
-
Copper
Sunnyside Area, Ray Mine
Pinal County, Arizona (Author: Linda Smith)
-
Copper
Warren District, Bisbee, Cochise County, Arizona, USA
58 x 33 x 20 mm
This very dramatic native Copper from Bisbee is dominated by a spinel twinned Copper crystals measuring 5.8 x 2.0 x 0.7 cm in size. Minor Malachite provides a nice accent. (Author: GneissWare)
-
Copper
Poteryaevskoe Mine, Rubtsovsky District, Altai Krai, Russia
115 X 60 mm (Author: Manuel Mesa) -
Copper
Lake Superior copper district, Keweenaw County, Michigan, USA
100 mm x 50 mm x 40 mm (Author: Robert Seitz) -
Copper
Chino Mine, Santa Rita, Santa Rita District, Grant County, New Mexico, USA
81 mm x 47 mm x 36 mm (Author: Carles Millan) -
Copper
Mashamba West Mine, Kolwezi District, Lualaba, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of the Congo (Zaire)
FOV of 34.5mm (Author: ofarcis) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
90x70mm (Author: Heimo Hellwig) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
90x70mm (Author: Heimo Hellwig) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
25x25mm (Author: Heimo Hellwig) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
140x110mm (Author: Heimo Hellwig) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
140x110mm (Author: Heimo Hellwig) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
20x20mm (Author: Heimo Hellwig) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
35x20mm (Author: Heimo Hellwig) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
30x20mm (Author: Heimo Hellwig) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
20x20mm (Author: Heimo Hellwig) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
45x25mm (Author: Heimo Hellwig) -
Copper
Itauz Mine, Dzhezkazgan, Karaganda Region, Kazakhstan
1.0 x 3.0 cm (Author: crosstimber) -
Copper
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
1.5 x 2.9 cm (Author: crosstimber) -
Copper
Chino Mine, Santa Rita, Santa Rita District, Grant County, New Mexico, USA
81 mm x 47 mm x 36 mm (Author: Carles Millan) -
Copper
Chino Mine, Santa Rita, Santa Rita District, Grant County, New Mexico, USA
81 mm x 47 mm x 36 mm (Author: Carles Millan) -
Copper
Chino Mine, Santa Rita, Santa Rita District, Grant County, New Mexico, USA
81 mm x 47 mm x 36 mm (Author: Carles Millan) -
Copper
Mohawk Mine, Mohawk, Keweenaw County, Michigan, USA
0.5 x 9.4 x 15.8 cm (Author: crosstimber) -
Copper
Caledonia Mine, Mass City, Ontonagon County, Michigan, USA
2.3 x 2.7 cm (Author: crosstimber) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
Same as above (Author: Heimo Hellwig) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
Same as above (Author: Heimo Hellwig) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
3cm wide x 2cm high Nail diameter 1-2mm (Author: Heimo Hellwig) -
Copper
Quincy Mine, Hancock, Houghton County, Michigan, USA
202 x 105 x 56 mm (Author: GneissWare) -
Copper
Reichenbach, Lautertal (Odenwald), Bergstraße District, Darmstadt, Hesse/Hessen, Germany
10,5 x 8,5 cm (Author: Andreas Gerstenberg) -
Copper
Houghton County, Michigan, USA
8.0 x 18.0 cm, FOV~4.5 cm (Author: Michael Shaw) -
Copper
Mohawk Mine, Mohawk, Keweenaw County, Michigan, USA
9.4 x 15.8 cm, FOV~10.0 cm (Author: Michael Shaw) -
Copper
Laker Pocket, Eagle Harbor, Keweenaw County, Michigan, USA
3.5 x 3.0 cm (Author: Michael Shaw) -
Copper
Laker Pocket, Eagle Harbor, Keweenaw County, Michigan, USA
3.5 x 5.5 cm (Author: Michael Shaw) -
Copper
Adventure Mine, Greenland, Greenland Township, Ontonagon County, Michigan, USA
3.0 x 5.0 cm (Author: Michael Shaw) -
Copper
Itauz Mine, Dzhezkazgan, Karaganda Region, Kazakhstan
63 mm x 10 mm - Largest crystal size: 8.5 mm (Author: Carles Millan) -
Copper
Itauz Mine, Dzhezkazgan, Karaganda Region, Kazakhstan
63 mm x 10 mm - Largest crystal size: 8.5 mm (Author: Carles Millan) -
Copper
Itauz Mine, Dzhezkazgan, Karaganda Region, Kazakhstan
63 mm x 10 mm - Largest crystal size: 8.5 mm (Author: Carles Millan) -
Copper
Itauz Mine, Dzhezkazgan, Karaganda Region, Kazakhstan
63 mm x 10 mm - Largest crystal size: 8.5 mm (Author: Carles Millan) -
Copper
Lake Superior copper district, Keweenaw County, Michigan, USA
100 mm x 50 mm x 40 mm (Author: Robert Seitz) -
Copper
Rio Tinto Mine (Mountain City Copper Mine), Mountain City District, Elko County, Nevada, USA
6.8 x 4.3 x 2.1 cm (Author: Don Lum) -
Copper
Rio Tinto Mine (Mountain City Copper Mine), Mountain City District, Elko County, Nevada, USA
6.8 x 4.3 x 2.1 cm (Author: Don Lum) -
Copper
Rio Tinto Mine (Mountain City Copper Mine), Mountain City District, Elko County, Nevada, USA
6.8 x 4.3 x 2.1 cm (Author: Don Lum) -
Copper
Keweenaw Copper District, Ontonagon County, Michigan, USA
125 X 80 X 80 mm (Author: Robert Seitz) -
Copper
Dzhezkazgan, Karaganda Region, Kazakhstan
fov 25 mm (Author: ploum) -
Copper
Bou Nahas Mine, Oumjrane mining area, Alnif Commune, Tinghir Province, Drâa-Tafilalet Region, Morocco
2.6 cm (Author: crosstimber) -
Copper
Adventure Mine, Greenland, Greenland Township, Ontonagon County, Michigan, USA
2.4 x 2.6 cm (Author: crosstimber) -
Copper
Onganja (Emke) Mine, Helen Farm 235, Onganja mining area, Seeis, Windhoek District, Khomas Region, Namibia
2.0 x 3.3 cm (Author: Michael Shaw) -
Copper
Morenci Mine, Morenci, Copper Mountain District, Shannon Mountains, Greenlee County, Arizona, USA
5.6 x 4.1 cm (Author: steven calamuci) -
Copper
Morenci, Copper Mountain District, Shannon Mountains, Greenlee County, Arizona, USA
5.6 x 4.1 cm (Author: steven calamuci) -
Copper
Morenci Mine, Morenci, Copper Mountain District, Shannon Mountains, Greenlee County, Arizona, USA
5.6 x 4.1 cm (Author: steven calamuci) -
Copper
Morenci Mine, Morenci, Copper Mountain District, Shannon Mountains, Greenlee County, Arizona, USA
5.6 x 4.1 cm (Author: steven calamuci) -
Copper
Rubtsovskoe Mine, Rubtsovsky District, Altai Krai, Russia
2.1 x 2.9 cm (Author: crosstimber) -
Copper
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona, USA
2.0 x 2.5 cm (Author: crosstimber) -
Copper
Itauz Mine, Dzhezkazgan, Karaganda Region, Kazakhstan
105 x 40 mm (Author: Manuel Mesa) -
Copper
Lake Superior copper district, Keweenaw County, Michigan, USA
75 mm x 60 mm x 50 mm (Author: Robert Seitz) -
Copper
Lake Superior copper district, Keweenaw County, Michigan, USA
75 mm x 60 mm x 50 mm (Author: Robert Seitz) -
Copper
Lake Superior copper district, Keweenaw County, Michigan, USA
170 mm x 75 mm x 3 mm (Author: Robert Seitz) -
Copper
Lake Superior copper district, Keweenaw County, Michigan, USA
170 mm x 75 mm x 3 mm (Author: Robert Seitz) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
48mm x 31mm (Author: Heimo Hellwig) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
90mm x 60mm (Author: Heimo Hellwig) -
Copper
Boinás East, 400 Bench, Boinás, Belmonte de Miranda, Comarca Oviedo, Principality of Asturias (Asturias), Spain
34 x 26 mm (Author: Manuel Mesa) -
Copper
Boinás East, 380 Bench, Boinás, Belmonte de Miranda, Comarca Oviedo, Principality of Asturias (Asturias), Spain
85 x 48 mm (Author: Manuel Mesa) -
Copper
Boinás East, 345 Bench, Boinás, Belmonte de Miranda, Comarca Oviedo, Principality of Asturias (Asturias), Spain
70 x 65 mm (Author: Manuel Mesa) -
Copper
Boinás East, 385 Bench, Boinás, Belmonte de Miranda, Comarca Oviedo, Principality of Asturias (Asturias), Spain
51 x 48 mm (Author: Manuel Mesa) -
Copper
Boinás East, 380 Bench, Boinás, Belmonte de Miranda, Comarca Oviedo, Principality of Asturias (Asturias), Spain
76 x 62 mm (Author: Manuel Mesa) -
Copper
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona, USA
2.0 x 2.5 cm (Author: crosstimber) -
Copper
North Mountain Mine, North Mountain, Montgomery County, Arkansas, USA
77mm x 73mm x 12mm (Author: Don Lum) -
Copper
North Mountain Mine, North Mountain, Montgomery County, Arkansas, USA
77mm x 73mm x 12mm (Author: Don Lum) -
Copper
North Mountain Mine, North Mountain, Montgomery County, Arkansas, USA
77mm x 73mm x 12mm (Author: Don Lum) -
Copper
Boinás Este, Boinás, Belmonte de Miranda, Comarca Oviedo, Principality of Asturias (Asturias), Spain
43 x 37 mm (Author: Manuel Mesa) -
Copper
Centennial Mine, Centennial, Houghton County, Michigan, USA
215 mm x 160 mm x 60 mm (Author: Robert Seitz) -
Copper
Centennial Mine, Centennial, Houghton County, Michigan, USA
215 mm x 160 mm x 60 mm (Author: Robert Seitz) -
Copper
Lake Superior copper district, Keweenaw County, Michigan, USA
150 mm x 140 mm x 30 mm (Author: Robert Seitz) -
Copper
Lake Superior copper district, Keweenaw County, Michigan, USA
125 mm x 70 mm x 5 mm (Author: Robert Seitz) -
Copper
Lake Superior copper district, Keweenaw County, Michigan, USA
110 mm x 60 mm x 15 mm (Author: Robert Seitz) -
Copper
Boinás East, 380 Bench, Boinás, Belmonte de Miranda, Comarca Oviedo, Principality of Asturias (Asturias), Spain
55 x 38 mm (Author: Manuel Mesa) -
Copper
Lake Superior copper district, Keweenaw County, Michigan, USA
240 mm x 140 mm x 100 mm (Author: Robert Seitz) -
Copper
Lake Superior copper district, Keweenaw County, Michigan, USA
240 mm x 140 mm x 100 mm (Author: Robert Seitz) -
Copper
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona, USA
380 mm x 260 mm x 20 mm (Author: Robert Seitz) -
Copper
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona, USA
380 mm x 260 mm x 20 mm (Author: Robert Seitz) -
Copper
Boinás East, 380 Bench, Boinás, Belmonte de Miranda, Comarca Oviedo, Principality of Asturias (Asturias), Spain
81 x 55 mm (Author: Manuel Mesa) -
Copper
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
124mm x 48mm x 10mm (Author: Don Lum) -
Copper
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
124mm x 48mm x 10mm (Author: Don Lum) -
Copper
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
124mm x 48mm x 10mm (Author: Don Lum) -
Copper
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
124mm x 48mm x 10mm (Author: Don Lum) -
Copper
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
124mm x 48mm x 10mm (Author: Don Lum) -
Copper
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
124mm x 48mm x 10mm (Author: Don Lum) -
Copper
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
124mm x 48mm x 10mm (Author: Don Lum) -
Copper
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
124mm x 48mm x 10mm (Author: Don Lum) -
Copper
White Pine Mine, White Pine, Ontonagon County, Michigan, USA
124mm x 48mm x 10mm (Author: Don Lum) -
Copper
Adventure Mine, Greenland, Greenland Township, Ontonagon County, Michigan, USA
3.1 x 5.2 cm (Author: crosstimber) -
Copper
Globe, Globe-Miami District, Gila County, Arizona, USA
9.7 x 12.0 cm (Author: am mizunaka) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
35 x 21 x 13 mm (Author: Pierre Joubert) -
Copper
Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia
35 x 21 x 13 mm (Author: Pierre Joubert) -
Copper
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona, USA
(Author: Firmo Espinar) -
Copper
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona, USA
Overall size: 46mm x 49mm x 16mm. Crystal size: 24 (Author: Firmo Espinar) -
Copper
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona, USA
Overall size: 46mm x 49mm x 16mm. Crystal size: 24 (Author: Firmo Espinar) -
Copper
Ray Mines, Scott Mountain area, Mineral Creek District, Dripping Spring Mountains, Pinal County, Arizona, USA
2.8 x 8.7 x 12.4 cm (Author: crosstimber) -
Copper
Baltic Mine, Baltic, Houghton County, Michigan, USA
72 mm x 24 mm (Author: Don Lum) -
Copper
Bisbee, Warren District, Mule Mountains, Cochise County, Arizona, USA
50 mm x 33 mm x 20 mm (Author: Don Lum) -
Copper
Kearsarge Mine, Kearsarge, Houghton County, Michigan, USA
4.5 x 8.5 cm (Author: crosstimber) -
Copper
Kearsarge Mine, Kearsarge, Houghton County, Michigan, USA
4.5 x 8.5 cm (Author: crosstimber) -
Copper
Beech Creek Quarry, Mount Vernon, Grant County, Oregon, USA
FOV = 0.7mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 3.1 mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 2.1 mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 1.8 mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 1.1 mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 3.5 mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 2.7 mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 2.9 mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 2.8 mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 2.5 mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 3.4 mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 4.2 mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 3.2 mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 3.4 mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 3.0 mm (Author: Doug) -
Copper
Beaver Valley Quarry, Shine, Jefferson County, Washington, USA
FOV = 3.2 mm (Author: Doug) -
Copper
Onganja (Emke) Mine, Helen Farm 235, Onganja mining area, Seeis, Windhoek District, Khomas Region, Namibia
91 mm x 50 mm x 42 mm (Author: Don Lum) -
Copper
Onganja (Emke) Mine, Helen Farm 235, Onganja mining area, Seeis, Windhoek District, Khomas Region, Namibia
91 mm x 50 mm x 42 mm (Author: Don Lum) -
Copper
Morenci Mine, Northwest Extension, Morenci, Copper Mountain District, Shannon Mountains, Greenlee County, Arizona, USA
5x5x5 cm (Author: Joseph DOliveira)
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