Mineral Specimens with Copper

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PAS-74 - Copper - SOLD
Copper Harbor, Houghton Co., Michigan, USA
small cabinet, 8.0 x 5.2 x 4.3 cm

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This specimen features a HUGE, 7 x 4 x 3 cm copper crystal, pointed at one end (see top-left photo) and dramatically more robust at the top, nicely perched on a small amount of lightweight matrix. It can be displayed horizontally or vertically to equal effect. It is an AMAZING, 3-dimensional specimen in person, with huge visual appeal, historic import, and aesthetic quality even by modern standards. Copper crystals of this size, and in this quality, are uncommonly preserved and available today. Copper Harbor is an old mining district that ended up not being as productive as mines further south, and was abandoned after mining for only a few years. This would date to the late 1800s or early 1900s.

PAS-87a - Native Copper - SOLD
Ore Knob Mine, Ore Knob, Ashe Co., North Carolina, USA
small cabinet, 6.0 x 4.9 x 4.6 cm

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academy/PAC87D1x.JPG A very rich specimen of solid copper, fairly important for what it is, of native copper from North Carolina. This certainly dates to the 1800s. I have never seen such a rich, well crystallized specimen. It has a reliable old label glued to the specimen itself, lest there be any doubt.

PAS-87b - Native Copper - SOLD
Ore Knob Mine, Ore Knob, Ashe Co., North Carolina, USA
miniature, 5.5 x 3.5 x 3.5 cm

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Native Copper from Ore Knob Mine, Ore Knob, Ashe Co., North Carolina, USA [db_pics/pics/pas-87ba.jpg]

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Native Copper from Ore Knob Mine, Ore Knob, Ashe Co., North Carolina, USA [db_pics/pics/pas-87bb.jpg]

academy/r87bc.JPG Like the above piece, this is fairly important for what it is: a rare exmaple from one of the early mines for native copper from North Carolina. This certainly dates to the 1800s. It has a reliable old label glued to the specimen itself, lest there be any doubt.

PREMU06-17 - COPPER-INCLUDED CALCITE on COPPER - SOLD
Quincy Mine, Hancock, Houghton County, Michigan, USA
cabinet, 11.0 x 7.3 x 6.3 cm

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These old classics come up to market so rarely in this quality and calibre, you can count the ones on a hand that have been for sale this decade. This is a spectacular display quality AND a fine specimen for historic reasons , at the same time. The main crystal is 3.5 inches tall, 3-dimensional and fat, and lustrous as you could wish for. The matrix is a mix of copper and rock. Its a big piece, without seeming massive, elegant despite the unusual size of the crystals. It is just a piece that stands so far above the crowd, I would keep it in a second if i were still adding calcites to my personal calcite collection (I have collected calcite since i was a kid and i do NOT have a finer specimen, and none of this size and quality. But, I've decided to sell my calcites and will do so soon...although its agonizing).

RARE08-2-46 - Native Copper - SOLD
Irai, Rio Grande do Sul, Brazil
thumbnail, 1.8 x 1.2 x 1.1 cm

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Copper from Brazil, crystallized no less?! This was one of the smaller but to me most incredibly surprising finds of Tucson 2008, brought out by Luis Menezes. This robust, complex crystal was one of the largest and finest in form, and also has a wonderful, colorful iridescent patina on the surface. Complete all around. For me, the first Michigan-quality copper crystal I have seen from Brazil.

RARE08-2-47 - Native Copper - SOLD
Irai, Rio Grande do Sul, Brazil
thumbnail, 1.6 x 1.0 x 0.9 cm

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Native Copper from Irai, Rio Grande do Sul, Brazil [db_pics/pics/rare08-2-47a.jpg]

Copper from Brazil, crystallized no less?! This was one of the smaller but to me most incredibly surprising finds of Tucson 2008, brought out by Luis Menezes. This robust, complex crystal has a bright coppery patina on the surface. For me, the first Michigan-quality copper crystal I have seen from Brazil.

RCU-03 - Cuprite with native Copper - $ 1850
Poteryaevskoe Mine, Rubtsovskoe, Rudnyi Altai, Western-Siberian Region, Russia
miniature, 4.9 x 3.4 x 2.7 cm

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Rising from a bit of matrix is a cluster of cuprite octahedra that strat small at the bottom of the specimen, and are surmounted by crystals at the apex to 1.8 cm in length. The crystals are exceptionally bright and splendent, slightly translucent and of a deep red color. Only at the mid-rear (on the backside) of the specimen is there noticeable damage , the piece otherwise being complete. On very close inspection, there are also a few minor subtle bits of wear to the left edge of the top cuprite cluster, but this is not immediately seen unless you go looking for it (though the piece would be more expensive were this not the case). So , overall, its a very fine display quality miniature, with about the brightest lustre of any here, and an unusual association with bright native copper growing in the center.

RCU-CUP-103 - Copper pseudomorph after Cuprite - $ 7500 SOLD
Poteryaevskoe Mine, Rubtsovsk, Altai, Western-Siberian Region, Russia
small cabinet, 6.2 x 6 x 4.8 cm

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This is one of the few VERY complete psuedomorphs we have seen from the deposit, over its run from 2008-2011. Most pseudomorphs are only partial, still very much cuprite and showing cuprite on some faces. This piece is complete all around and has great patina, on the intrictae copper crystals (which reach 2 cm). Interestingly, this is not a smooth copper pseudomorph , as with for example the material from New Mexico or Tsumeb in which copper replaces azurite or cuprite respectively. Here, the replacement seems to have happened in a more intricate process, resulting in small crystals of copper atop the actual pseudomorph, or comprising it. It looks more like a biological invasion than the typical replacement pseudomorph surface. Complete all around, and aesthetic

RH02-06 - Copper "chisel sliver" from 1860 - SOLD
from the famous 40-ton nugget, Eagle River, Lake Superior District, Michigan, USA
small cabinet, 8.0 x 2.8 x 1.3 cm

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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 blast apart). Thus, the mine employed parties of miners working around the clock on three shifts for months, to carve the nugget up by hand and haul the pieces out. I am told that historians have written the mine actually LOST MONEY by the time all the human labor was factored in. This sliver is the kind of filing they would chip off the large nugget until, bit by bit, they reduced it and smelted the whole thing. The old label indicates the piece was cut in 1860 (pre-Civil War!!) and provides the ultimate documentation you'd want for such a neat artifact. Nice brown patina also confirms the age. Comes with Hugh Ford early 1900's label and also former Edna Doughty collection with label.

RH1-27 - Copper (spinel twin) - SOLD
Ray Mine, Pinal Co., Arizona, USA
thumbnail, 3.2 x 1.2 x 1.1 cm

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Copper (spinel twin) from Ray Mine, Pinal Co., Arizona, USA [db_pics/pics/rh1-27a.jpg]

This is a choice, spinel twinned, copper specimen, exhibiting a wonderful blue-green, patina. I also believe that would be a fine competition miniature.

RH1-32 - Copper pseudo after Azurite - $ 120
Georgetown, Grant County, New Mexico, USA
thumbnail, 3.3 x 2.9 x 2.7 cm

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Copper pseudo after Azurite from Georgetown, Grant County, New Mexico, USA [db_pics/pics/rh1-32a.jpg]

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Copper pseudo after Azurite from Georgetown, Grant County, New Mexico, USA [db_pics/pics/rh1-32b.jpg]

This specimen once was a rosette of intergrown, bladed, azurite crystals which have been totally pseudomorphed by copper. The specimen exhibits a very nice old patina. These complete floaters are quite rare today, and were found in the 1940s through 1950s I am told. They show a remarkable complete replacement of azurite by copper, and are to my knowledge unique in their aspect, form, and size compared to other azurite pseudomorphs

RH3-07 - Copper in Calcite - SOLD
Keweenaw Peninsula, Michigan, USA
miniature, 3.1 x 2.1 x 1.9 cm

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Small cluster of semi-transparent calcite crystals to 1.8cm, with bright shiny copper included within. The scalahedral calcite crystals are sharp and well-formed with no significant damage. Michigan calcites with copper came from several mines in the district, but almost all came out almost 100 years ago. Few clusters appaer on the market, with most specimens being singles. Also, this one is just plain pretty! This specimen comes with a label indicating the piece was purchased from a William Collins on June 3, 1935.

RH3-08 - Copper - SOLD
Keweenaw Peninsula, Michigan, USA
miniature, 5.9 x 3.8 x 2.0 cm

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Copper from Keweenaw Peninsula, Michigan, USA [db_pics/pics/rh3-08a.jpg]

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Copper from Keweenaw Peninsula, Michigan, USA [db_pics/pics/rh3-08b.jpg]

Another nice old specimen from the Michigan copper country. This is a very nice native copper specimen with very well-formed crystals to 1.5cm long. The specimen appears to have modified dodecahedron and spinel-law twinned crystals. These copper specimens from Michigan are old, with most mines having closed prior to 1930�s.

RH3-13 - Copper pseudomorph after Aragonite - SOLD
Corocoro, Bolivia
miniature, 3.9 x 3.3 x 2.1 cm

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Copper pseudomorph after Aragonite from Corocoro, Bolivia [db_pics/pics/rh3-13a.jpg]

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Copper pseudomorph after Aragonite from Corocoro, Bolivia [db_pics/pics/rh3-13b.jpg]

Although its original external form is still obvious as being aragonite, it is very evident that the aragonite has been totally replaced by copper. This is a neat, unusual, specimen! These classic copper pseudos are seldom seen today on teh market and to me represent one of the most interesting pseudos of all out there, in that such a common carbonate as aragonite has been replaced by a native element.

RH3-16 - Copper pseudo. after Azurite - SOLD
Georgetown, Grant County, New Mexico, USA
miniature, 3.9 x 2.9 x 1.6 cm

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I really like this pseudomorph of copper after azurite. The original form of azurite as a rosette is clearly evident. This piece has more form and aesthetics than most from there, as well as a superb patina . Also it is rather large for the material - most are 3 cm and smaller! Overall a historic and very interesting specimen.

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37	38	39	40	41	42	43	44	45	46	47	48	49	50	51	52	53	54
55	56	57	58	59	60	61	62	63	64

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Rob Lavinsky, rob@irocks.com

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