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Mineral Specimens with Copper
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Remarkably complex and aesthetic copper specimen. There are many sets of sharp dentritic growths, large crystals, and possibly even some twinning. With such good luster and habit, 3-dimensionality not to mention the remote locality, this is an excellent miniature. 4.1 x 2.8 x 2.1 cm
Many of these fine pseudos were collected by George English and A.E. Foote in the 1890's and were sold to Eastern collectors and also to European collectors. Note the old label, showing how they compared these to the azurite roses, or "chessylite", more common from France at the time. Today, us Americans are trying to find them and buy them back, by and large! They are from the Rose or Copper Rose mine which is east of the Chino mine. This is a classic New Mexico locality. It isn’t hard to see that with a little cleaning (hard to imagine it wasn’t done before!) this will turn into a prettier specimen with an important provenance. However, given the old history with it, I haven't done the cleaning as I like the old-old look of the set. The blades of copper are amazingly sharp, and their appearance is diminished by the clay attached. In person, its more obvious how sharp they are underneath. NOTE - NOT A THUMBNAIL! 3.2 x 2.4 x 2.2 cm
Exceptionally well-crystallized specimen of copper, with the largest crystal being a full 1.9 cm! tall. Any larger, and this specimen would be considered a major copper. As it is, it is a major thumbnail. Just look at those crystal faces and that patina. Turn the wrong way in a case, and get comments... 2.7 x 1.9 x 1.7 cm
Superlative Copper from one of the world’s great localities. The Copper is very well-crystallized, led by a sharp euhedral 1 cm , HOLLOW, crystal. These crystals are intergrown with numerous quality quartz crystals. This is a great thumb! 2.8 x 1.5 x 1.5 cm
Stunning pseudo and one of the best of these old classics that I have had – looks like someone just cast the copper in the form of an Azurite rose. It is that sharp and well-defined, with moderate luster and a rich chocolate-brown patina to it. Many of these fine pseudos were collected by George English and A.E. Foote in the 1890's and were sold to Eastern collectors and also to European collectors. This one from the Rose Mine which is east of the Chino mine. This is a classic New Mexico locality, now gone. 3.4 x 2.7 x 2.3 cm
Intergrown Copper and Calcite that this region is so noted for. The presentation side had good clarity and superb striations in the Calcite, but the back is unusual for its Copper intergrown with sharp scalenohedron Calcite faces. Nice thumb, and actually better in person yet. 1.8 x 1.5 x 1.2 cm
From the most prolific area in the world for Copper specimens. This is a fine aesthetic thumbnail specimen with a small amount of matrix at the base. 2.8 x 2.7 x 1.5cm
This is a great large specimen consisting of micro crystallized leaf Copper with a slight amount of Calcite matrix on the reverse side. It is actually comprised of hundreds of tiny sharp cubic crystals. I think the aesthetics of this specimen are wonderful and is it very arborescent in appearance. 21.0 x 14.5 x 2.5cm
A fine "feather" of copper, crystallized from top to bottom, from the Itauz mine in Russia. The mine is now NOT producing any more copper specimens. It is hoped it will produce again in the future, as the strip mine widens, but there is no assurance of this. And, in any case, the last batch of specimens that came out was more "brushy" in appearance and did not include these delicately-crystallized specimens. 3.9 x 2.5 x 0.4cm
A striking and showy specimen of blood-red, soft, hair-like, lustrous chalcotrichite needles richy covering both sides of crystallized copper from the famous Emke Mine at Onganja, Namibia. Chalcotrichite is an uncommon, fibrous variety of cuprite. These fine, old-time pieces probably came out in the 1960s or early 70s. 3.3 x 2.6 x 1.7 cm
An EXTREMELY RICH, old-time and sculptural silver-copper "halfbreed" from the famous Keweenaw Peninsula of Michigan. Most halfbreeds are less much less than 50% silver, but this hefty piece is at least 75% silver and weighs 52 grams. This fine piece was formally in the collection of George Robinson, currently curator of the Seamann Mineral Museum at Michigan Tech. 3.7 x 2.7 x 1.8 cm
A BEAUTIFUL and AESTHETIC, old-time, Copper Country specimen of a lustrous, striated and translucent, 4.3 cm, colorless, twinned calcite scalenohedron. it is very nicely set on copper with matrix, and has included copper inside. Several faces of the calcite crystal are preferentially peppered with tiny copper crystals, which really adds character. The yellowed, antique label tells you that this is a 100 year old plus specimen. 5.0 x 4.0 x 3.5 cm
A very sculptural copper, showing fine spinel-twinned crystals - an elegant Michigan copper! 2.3 x 1.6 x 1.6cm
This is a magnificent thumbnail of copper on drusy quartz from the Upper Peninsula of Michigan. The patina of the copper crystals, which reach 1.0 cm, is unusually brassy, with good luster. They are nestled snugly in a blanket of quartz - very aesthetic and unique arrangement! ex. John Saul Collection 1.5 x 1.4 x 1.3 cm
A rich specimen of classic Michigan copper-in-calcite. This specimen features a large cluster of transparent scalenohedral calcites in which you can clearly see the penny-bright copper. The crystals measure to 1.8 cm in length. There is very minor edge-wear here and there but this IS a showy and large piece for the price. 8.5 x 6.5 x 5.5 cm
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Rob Lavinsky, rob@irocks.com
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