Rio Tinto, Nevada, Coppers!

These historic copper specimens were collected from the Rio Tinto mine (Mountain City District, Elko County, Nevada) back around 1960 by a dozer operator, during the reclamation of this long-defunct copper mine. I was fortunate enough to take part in the acquisition of this original collection. A small portion of these specimens showed patinas of dark-red cuprite coating unusually-fine, dendritic, crystallized copper. Good crystallized coppers from any Nevada locality are difficult to locate, and these are no exception.

Rio Tinto Copper #1

An attractive, 28x15x3mm flattened dendrite of
lustrous Copper crystals $20

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Rio Tinto Cuprite-on-Copper #2

A 23x16x10mm cluster of Copper dendrites coated with
lustrous red Cuprite- $35

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Rio Tinto Cuprite-on-Copper #3

A nicely crystallized, 30x15x1.5mm, flattened Copper crystal group,
coated with red Cuprite $40

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Rio Tinto Copper #4

An unusual and attractive, 23x22x12mm,"U" shaped cluster of Copper crystals and dendrites, still holding bits of matrix-  $60

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Rio Tinto Copper #5

A rare, 27x31x29mm, matrix specimen of white Quartz host rock with a nice plume of Copper dendrites and crystals freestanding near the top-  $75

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Rio Tinto Copper #6

A 51x39x22mm mass of Copper showing a very unusual polygonal cast after either another crystal, a piece of rock, or old mine wood-  $80

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Rio Tinto Copper #7

A beautiful, 52x20x3mm dendrite of lustrous Copper crystals-  $100

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Rio Tinto Cuprite-on-Copper #8

An outstanding,46x19x4mm plume of Cuprite-coated Copper,
growing off a bit of rock matrix.  A great display-quality miniature!
$120         
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Rio Tinto Copper #9

A very bright and lustrous, 42x19x4mm, Copper crystal plume showing Beautiful, old, original patina and several Spinel-twinned crystals-
$125      
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Rio Tinto Cuprite-on-Copper #10

A large, 54x17x3mm, wiry, Cuprite coated Copper group with pieces of host rock matrix-  $130

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Rio Tinto Cuprite-on-Copper #11

A incredible, stable, 49x20x12mm matrix specimen with a nearly 50mm long nest of Cuprite-coated Copper dendrites draping over both ends of the white Quartz matrix!  $150

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Rio Tinto Copper #12

A 45x23x5mm Copper crystal cluster with very fine crystallization and original, old patina and luster.  This piece looks very similar to an Eagle's Nest Gold, in it's color and the way it crystallized!  Lots of Spinel Twins!  $160         Order Here


Rio Tinto Cuprite-on-Copper #13

A very aesthetic, 48x27x10mm Cuprite-coated Copper dendrite with a piece of host rock matrix attached.  VERY attractive and lustrous!   $175

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Rio Tinto Copper #14

An excellent, 55x33x3mm crystallized Copper dendrite group curiously resembling a mouse or perhaps another animal figure!  Sturdy!  $200

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Rio Tinto Cuprite-on-Copper #15

A very large specimen for this locality!  An 80x40x10mm sheet of crystallized Copper with some bits of host rock matrix attached-  $200

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