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Copper : Cu | |
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Keweenaw peninsula, Michigan, USA Single stalactitic mass of partialy crystaline copper 10 cm high. Photographed by, and in the collection of, Karl Volkman |
| © Karl Volkman | Photo ID: 7489 View Count: 334 |
Copper : Cu | |
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Keweenaw peninsula, Michigan, USA size 8 cm Photo & Collection: Foschi-Tagliabue |
| © Tagliabue-Foschi | Photo ID: 22303 View Count: 280 |
Copper : Cu, Malachite : Cu2[(OH)2|CO3] | |
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Keweenaw peninsula, Michigan, USA Nice plate of arborescent copper with malachite. Size 6x3.5x3cm. Rafael Hernandes Corrêa-Silva Collection. |
| © Brhounds | Photo ID: 48717 View Count: 196 |
Copper : Cu | |
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Keweenaw peninsula, Michigan, USA A great, historical old piece cut by hand with chisel and hammer from a 40-ton piece of native copper! This find was famous. They hit a lode so rich that huge copper nuggets were found in the veins, and one measured some 40 tons. It could not be moved, nor could it be blasted (large coppers simply absorb the shock and compress a bit, but don't ... |
| © Rob Lavinsky | Photo ID: 69333 View Count: 119 |
Copper : Cu | |
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Keweenaw peninsula, Michigan, USA Copper crystal group offered by Walter Kellogg at the 2009 Detroit Gem and Mineral Show. The Dodecahedral crystal at center is nearly 1cm wide. |
| © C. Stefano '09 | Photo ID: 256481 View Count: 99 |
Copper : Cu | |
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Keweenaw peninsula, Michigan, USA A 10 cm copper specimen. Reserved for Miro Fisman. Collection and photo: Albert Russ. |
| © Albert Russ | Photo ID: 155774 View Count: 93 |
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Keweenaw peninsula, Michigan, USA Largest dimension measures 9.5cm. From the John Ward Collection. |
| © Melissa Ward Carroll | Photo ID: 157282 View Count: 74 |
Copper : Cu, Calcite : CaCO3 | |
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Keweenaw peninsula, Michigan, USA Native Copper on and as inclusions in a 5 cm doubly terminated Calcite crystal on matrix from the copper mines in Michigan, USA. Specimen and photo: Knut Eldjarn. |
| © Knut Eldjarn | Photo ID: 143498 View Count: 59 |
Copper : Cu | |
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Keweenaw peninsula, Michigan, USA Copper that has been at the working end of a pneumatic carbide drill bit. Richard Hauck Collection (1974). The scale at the bottom of the image is an inch with a rule at one cm. |
| Photo ID: 246606 View Count: 27 | |
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Keweenaw peninsula, Michigan, USA Copper in Calcite. Terry Szenics Collection (1972). The scale at the bottom of the image is an inch with a rule at one cm. |
| Photo ID: 246591 View Count: 26 | |
Additional Photos | |
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