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Mineral Specimens with Copper
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6.0 x 3.5 x 3.3 cm. Michigan copper in calcite specimens are certainly one of the most desirable calcite varietals in the world. Most of them were produced prior to World War I. Bright copper within glassy, striated calcite scalenohedrons and rhombs presents a unique and very beautiful calcite specimen. This classic and aesthetic, old-timer features two, glassy, highly lustrous and striated, richly filled, copper in calcite crystals beautifully perched atop matrix, which includes copper leaves and stringers of epidote. The gorgeous, nearly doubly terminated crystal is 3.5 cm and the large, blocky rhomb is 3.8 cm. The scalenohedron is pristine and the large crystal is very minimally impacted by the contacting and cleaving at the end. This is an excellent, old-time representation of this very desirable calcite variety and is accompanied by an older Larry Conklin label.
6.1 x 5.5 x 2.9 cm. An old-time, sculptural Cornwall, England copper specimen from the much less well-known Tresavean Mine in the historic Camborne - Redruth - St Day District. This fairly well crystallized copper, with a classic copper patina, looks like an anthropomorphic figure with outstretched arms and legs, or if turned sideways looks like a capital "H". Classic, very showy material from the Rock Currier Collection, #447.
2.7 x 1.8 x 1.1 cm. A rare and seldom available specimen from the historic Andacollo Mine, Coquimbo Region of Chile. The crystals of an aesthetic, arborescent copper crystal cluster are coated with microscopic bits of bright, rich, mellow-yellow gold. Classic, old-time and seldom available material from this famous locale. Ex. Mullane Collection.
25.5 x 12.0 x 3.1 cm. An extremely unusual, very large wire crystal growth of copper from Michigan. It starts at one end as a single wire, then gradually branches into more and more, culminating in a herringbone fan.
A superb, sharp copper tetrahexahedron crystal (2.3cm) is perched aesthetically on “legs” of smaller copper crystals. The excellent patina is lustrous and colored like fine milk chocolate, considered very desirable because it shows no signs of chemical cleaning or brightening. As well, dramatic matrix-bound crystals like this are uncommon and the tetrahexahedron has added value. 4.7 x 3.7 x 2.3 cm
This is a copper from Ray of a rather untradtitional form and of high quality, i think. It comes from the second collection of Steve Neely, who got it from Al over a decade ago. It came to me through Steve actually, rather than from Al with the rest of the specimens shown here. It is exceptionally well-formed on both sides, and can be displayed from either side with equal effect. No matrix (its propped on putty in the photo). One of the more unique Ray Coppers!, compared to many other Ray coppers I have seen! 5.25 x 4 x 1 cm
Bright, skeletal-looking silver specimen with a bit of copper on the lower left. Old material. Front and back views are shown, so you can see it is complete and rather elegant all around. Weight is 59 grams 6.9 x 3.8 x 2.5 cm
21.4 x 8.0 x 6.6 cm. A strike, large, doubly terminated quartz crystal richly invested with bright copper from the Messina Mine of South Africa and the Rob Smith Collection. This dramatic, very sharp large cabinet specimen has a distinctive, less copper-rich primary termination. The other termination was broken in situ, but was then fully healed as you can see and thus is a termination again. This giant is essentially pristine, with only very trivial edge wear scattered about.
4.9 x 3.6 x 1.2 cm. An aesthetic and superb copper specimen from the famous Copper Country of Michigan and the Mullane Collection. A super-sharp, complete all-around, 2.2 cm, tetrahexahedral copper crystal is set on a box-work bed of smaller copper crystals. The copper crystal "tail" is truly dramatic and the piece has two different colors of coppery patina - beautiful. This is classic, old-time material from this renowned locale. The large, sharp crystal is especially noteworthy.
11.5 x 5.0 x 1.9 cm. A very fine, rich and showy specimen of bright, micro-dendritic copper in a sawed, transparent cabinet gypsum cleavage from the Mission Mine of Arizona. Old and very choice material. Ex. Mullane Collection.
2.7 x 1.8 x 1.4 cm. A very aesthetic, complete all-around, floater copper thumbnail from Tsumeb. This is just a fine, arborescent arrangement of platy, unique cogwheel-like, copper crystals with light iridescence and a nice patina. Sharp copper crystal clusters, such as this, are rather uncommon from this mine. Ex. Rob Smith Collection, a noted Tsumeb collector.
7.0 x 5.3 x 0.3 cm. A very aesthetic, branching, arborescent specimen of spinel-twinned copper crystals from recent finds at the Itauz Mine of Kazakhstan. The piece has a nice copper patina.
3.3 x 1.1 x 0.7 cm. A really fine and aesthetic, floater, doubly terminated copper specimen from the Itauz Mine of Kazakhstan. In fact, what we have are two copper crystal forms: a very sharp spinel-twin with multiple, sharp, tetrahexahedrons. The entire piece has a great patina. Classic copper crystals and form.
2.0 x 0.8 x 0.2 cm. A very fine, classic and sculptural Copper Country "half-breed" with distinct silver and copper components. This old-time specimen looks like a stylized boot and is from the John Saul Collection. The silver is bright and the copper has a nice patina. It is uncommon to have such richness and separation in silver in Michigan half-breeds.
4.7 x 2.2 x 0.8 cm. A really fine, floater specimen of lustrous, brick-red cuprite coating a very aesthetic, arborescent cluster of spinel-twinned copper crystals from the well-known Rio Tinto Mine of Elk County, Nevada. An excellent, highly crystallized copper from this locale. Ex. Dave Stoudt Collection.
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Rob Lavinsky, rob@irocks.com
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share specimen![Copper, Calcite from Quincy Mine, Hancock, Houghton Co., Michigan, USA [db_pics/mdpics/MD-217400a.jpg]](db_pics/mdpics/MD-217400a.jpg)
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![Copper from Itauz Mine, Zhezqazghan Oblysy (Dzezkazgan Oblast'; Dzhezkazgan Oblast'; Djezkazgan Oblast'; Jezkazgan Oblast'), Kazakhstan [db_pics/mdpics/MD-222523a.jpg]](db_pics/mdpics/MD-222523a.jpg)
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