Copper

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1.2" Bright SILVER-on-COPPER HALFBREED Crysta...
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Copper

1.2" Bright SILVER-on-COPPER HALFBREED Crysta...

$67.00$100.00

A "half-breed" mineral specimen features a combination of copper and silver in the same piece, a der..

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1.6" Fine Metallic NATIVE COPPER Spinel Twin ...
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Copper

1.6" Fine Metallic NATIVE COPPER Spinel Twin ...

$50.25$75.00

There are some rare spinel twin crystals on this old-time specimen from the Calumet & Hecla Mine..

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2.2" Dark Brown Copper w-Silver HALFBREED Cry...
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Copper

2.2" Dark Brown Copper w-Silver HALFBREED Cry...

$33.50$50.00

Copper-silver "halfbreeds" are a physical mixture of native silver and native copper. They form crys..

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2.9" Spinel-Law Twin Crystallized COPPER w/Ho...
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Copper

2.9" Spinel-Law Twin Crystallized COPPER w/Ho...

$167.50$250.00

Here is a superbly-crystallized specimen of New Mexico copper - a spinel-twin floater with no attach..

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3.5" Sharp Shiny Spinel Law Twin COPPER Arbor...
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Copper

3.5" Sharp Shiny Spinel Law Twin COPPER Arbor...

$158.00$315.00

This is a very fine specimen of crystallized native copper, featuring spinel-law twins which grew in..

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4.6" Bright Shiny COPPER CRYSTALS Nicely Form...
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Copper

4.6" Bright Shiny COPPER CRYSTALS Nicely Form...

$50.25$75.00

Native copper specimens are on my all-time favorites list, and this one is an attractive one from th..

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5.4" CRYSTALLIZED COPPER Sheet of RedBrown w/...
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Copper

5.4" CRYSTALLIZED COPPER Sheet of RedBrown w/...

$97.15$145.00

Here is an old-time specimen of crystallized copper from the Iroquois Mine, a copper mine that opene..

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6.7" VEIN COPPER Bright Lustrous Orange Cryst...
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Copper

6.7" VEIN COPPER Bright Lustrous Orange Cryst...

$36.85$55.00

This specimen is a fine example of "float" copper that occurs in veins in calcite in the fabled copp..

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