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Mineral Specimens with Calcite
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4.9 x 4.5 x 3.9 cm. A KILLER Dal'negorsk specimen! Just look at the aesthetics here…a complete, sharp crystal of pastel-pink manganoan calcite perched perfectly on a contrasting base of dark, flashy sphalerite crystals. The calcite is complete all the way around.
10.3 x 8.4 x 4.4 cm. This is just a spectacular Spanish combo piece, as you can see. There is this incredibly aesthetic balance to it. First, you have platy rhombs of unusually transparent, lustrous blue baryte, to just under 2 centimeters on edge. Next to the barytes are clustered a number of milky, translucent calcites. And at the other end of the specimen are gemmy, golden-yellow fluorites with fantastic luster (to 1.3 cm). The whole thing comes together so beautifully! Barytes are very rare for this locality especially associated with the fluorite which is classic here. From the collection of fluorite specialist Alain Martaud, a dealer and collector in France.
16.4 x 10.9 x 6.3 cm. Rhodo is rare from here but this cute association piece, cabinet sized no less, is more notable for its overall aspect than just for having a bit of rhodo on it. This is a rare combo specimen from Taxco, a BIG plate of sharp rhombs of calcite to 4 cm across, with a pretty sprinkling of pastel-pink rhodochrosite! Taxco is one of those localities that did not turn out specimens in quantity, and certainly not like this unusual combo piece. Ex. Stoudt Collection.
14.8 x 6.2 x 4.8 cm. From the collection of Dave Stoudt, a FASCINATING, extraordinary-looking mineral specimen indeed -- a stalactite of calcite that looks like an elongated finger (it even appears to have a fingernail!), with a cap of flowery aragonite crowning it! It is complete all around, with no damage. One of those cool "oddity" specimens that is really attention-getting.
10.3 x 9.5 x 6.5 cm. Here you have a carpet of super-sparkly, golden micro-crystals of marcasite, on a curving backdrop of what is identified as sphalerite on the label. There are some translucent crystals of calcite on the back side of the specimen. Ex. Stoudt Collection.
7.2 x 6.2 x 3.5 cm. Crystals of pastel-lavender fluorite, water-clear in their interiors, isolated on matrix, to 1.5 cm. The crystals have complex modified forms. With what appears to be a modified cuboctahedron right next to a simple octahedron! There is a "window" on the largest crystal into the limpid interior. Ex. Marty Zinn Collection.
5.2 x 4.2 x 3.9 cm. As you can see, this is NOT your average Poona combo piece, which is why it found its way into the Marty Zinn collection. What makes it so unusual is that the specimen is anchored by a translucent, light golden-yellow calcite crystal, with a "Rudniy" look about it. On the calcite have formed both blocky light green apophyllites and "books" of pearly stilbite.
7.5 x 5.6 x 5.1 cm. From the collection of Marty Zinn, a really unique and wonderful calcite specimen from Romania. The translucent calcite has formed a compound crystal bursting with hundreds of spiky terminations, isolated aesthetically in the middle of the matrix.
5.0 x 4.7 x 3.3 cm. A STUNNING and SUPERB cluster of twinned calcite crystals from a very recent and small find at the famous Daye Mine of China. Rotate the piece and get entirely different views of this fascinating specimen. This amazing piece features calcites with two different twinning styles: the dramatic, upright, hematite-tinted "Mercedes Benz Star" crystal; and the water-clear, colorless, flattened, poker-chip crystals. The water-clear, hexagonal, poker-chip calcite crystals are SO sharp, they look like a cut gemstones! This beautiful, two-sided calcite specimen rests very nicely on a crust of smaller calcite crystals.
7.0 x 5.1 x 3.5 cm. Pyrochlore is an uncommon niobium oxide, found in unusual igneous rocks, such as nepheline syenites and carbonatites, and some granitic pegmatites. The Oka area hosts a classic carbonatite complex. A pink paper arrow points to a 7 mm, sharp, lustrous and partially gemmy, reddish-brown, octahedral pyrochlore crystal jauntily perched on the edge of pearl-white strontium calcite matrix. Lustrous, olive-green vesuvianite crystals and a couple of black phlogopite mica books are a nice contrast to the matrix. Accompanied by an old John Albanese label dating from 1953-1968. Ex. George Elling Collection.
4.5 x 4.4 x 4.2 cm. Otherwise known for its great cuprite specimens, the Red Dome Mine has also produced a FEW small pockets of fine calcites, as is in evidence here. There were not many, and most probably stayed in Australia, but this is as good a miniature as I know of. It is SHARPLY twinned. This is a colorless, glassy and gemmy, twin crystal of calcite which is also doubly terminated - nearly a floater, but not quite. Overall, it is like a little jewel. Ex. Jeff Starr collection.
10.5 x 6.5 x 6 cm. When I saw this amazing, glowing golden calcite, it was on a big, clunky matrix that detracted from the overall beauty. So we had it trimmed to create a matrix that was more appropriate as a setting for the jewel-like crystal. The calcite itself is big, measuring 5.5 cm across the top, 6 cm down, and 4.5 cm thick. And, it is absolutely pristine.
7.5 x 6 x 4 cm. The size of these cobaltoan calcite crystals is just remarkable compared to the average specimen you see – these sharp scalenohedrons rise to 1.3 cm above the matrix! Pretty pink blush color with silky micro-stepped faces. A very rich specimen with unusually pastel color.
6.5 x 4.5 x 1.5 cm. A fine spray of gemmy crystals of South Dakota baryte with light coffee color. The crystals are attached to a thin plate of calcite in back. The terminations are complete, with one area of natural pocket contact on the upper right side.
11.8 x 9.6 x 5.3 cm. This piece is actually one of the more impressive, aesthetic and highly displayable combination specimens I've seen from this area. This specimen features some top quality, highly lustrous, deep forest green Malachite spheres overgrowing orange-tan Calcite crystals on matrix.
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Rob Lavinsky, rob@irocks.com
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share specimen![Calcite (Var: Manganoan Calcite), Sphalerite from Nikolaevskiy Mine, Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Primorskiy Kray, Far-Eastern Region, Russia [db_pics/mdpics/MD-171589a.jpg]](db_pics/mdpics/MD-171589a.jpg)
![Fluorite, Baryte, Calcite from Moscona Mine, Solís, Llanera, Villabona mining area, Asturias, Spain [db_pics/mdpics/MD-171590a.jpg]](db_pics/mdpics/MD-171590a.jpg)
![Rhodochrosite, Calcite from Taxco de Alarcón (Taxco; Tasco), Mun. de Taxco, Guerrero, Mexico [db_pics/mdpics/MD-171602a.jpg]](db_pics/mdpics/MD-171602a.jpg)
![Aragonite, Calcite from Sichuan Province, China [db_pics/mdpics/MD-171677a.jpg]](db_pics/mdpics/MD-171677a.jpg)
![Marcasite, Calcite from Olkusz, Olkusz District, Małopolskie, Poland [db_pics/mdpics/MD-171679a.jpg]](db_pics/mdpics/MD-171679a.jpg)
![Fluorite, Calcite from Naica, Mun. de Saucillo, Chihuahua, Mexico [db_pics/mdpics/MD-171680a.jpg]](db_pics/mdpics/MD-171680a.jpg)
![Apophyllite-(KF), Stilbite-Ca, Calcite from Pune District (Poonah District), Maharashtra, India [db_pics/mdpics/MD-171681a.jpg]](db_pics/mdpics/MD-171681a.jpg)
![Calcite, Quartz from Boldut Mine, Cavnic (Kapnic; Kapnik), Maramures Co., Romania [db_pics/mdpics/MD-171682a.jpg]](db_pics/mdpics/MD-171682a.jpg)
![Calcite from Fengjiashan Mine (Daye Copper mine), Edong Mining District, Daye Co., Huangshi Prefecture, Hubei Province, China [db_pics/mdpics/MD-171702a.jpg]](db_pics/mdpics/MD-171702a.jpg)
![Pyrochlore, Vesuvianite, Phlogopite, Calcite from Oka complex, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada [db_pics/mdpics/MD-171774a.jpg]](db_pics/mdpics/MD-171774a.jpg)
![Pyrochlore, Vesuvianite, Phlogopite, Calcite from Oka complex, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada [db_pics/mdpics/MD-171774b.jpg]](db_pics/mdpics/m/MD-171774b.jpg)
![Calcite from Red Dome Mine, Chillagoe, Chillagoe-Herberton District, Queensland, Australia [db_pics/mdpics/MD-171929a.jpg]](db_pics/mdpics/MD-171929a.jpg)
![Calcite from Jalgaon District, Maharashtra, India [db_pics/mdpics/MD-171986a.jpg]](db_pics/mdpics/MD-171986a.jpg)
![Calcite from Jalgaon District, Maharashtra, India [db_pics/mdpics/MD-171986b.jpg]](db_pics/mdpics/MD-171986b.jpg)
![Calcite (Var: Cobaltoan Calcite) from Aghbar Mine (Arhbar Mine), Aghbar, Bou Azzer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco [db_pics/mdpics/MD-172053a.jpg]](db_pics/mdpics/MD-172053a.jpg)
![Baryte, Calcite from Box Elder Creek, Pennington Co., South Dakota, USA [db_pics/mdpics/MD-172054a.jpg]](db_pics/mdpics/MD-172054a.jpg)
![Malachite, Calcite from Katanga (Shaba), Democratic Republic of Congo (Zaïre) [db_pics/mdpics/MD-172123a.jpg]](db_pics/mdpics/MD-172123a.jpg)