Mineral Specimens with Calcite

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D06-200 - Emerald on Calcite - SOLD
La Pita Mine, Boyaca, Colombia
miniature, 5.2 x 4.7 x 3.1 cm

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A very attractive and affordable combination piece for emeralds, with beautiful, lustrous, bright crystals to about 1 cm sitting on a cluster of rhombohedral calcites. I think its especially nice because the emeralds are worth the $$$ on their own, but here we get the bonus of crystallized matrix underneath!

D06-231 - Cobaltian Calcite - SOLD
Bou-Azzer, Quarzazate Prov., Atlas Mtns., Morocco
cabinet, 9.6 x 6.5 x 5.6 cm

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Cobaltian Calcite from Bou-Azzer, Quarzazate Prov., Atlas Mtns., Morocco [db_pics/pics/d06-231a.jpg]

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Cobaltian Calcite from Bou-Azzer, Quarzazate Prov., Atlas Mtns., Morocco [db_pics/pics/d06-231b.jpg]

Recent mining has produced cobaltian calcite with a rich magenta, hue. This specimen is covered in translucent, lustrous, magenta colored crystals, to .8 cm across. The color contrast with the massive, white calcite matrix underneath is astounding. This specimen is one of the better large pieces I have seen to date because of its 3-dimensionality and its color intensity....and my advice is, given the beautiful color and historical rarity of such specimens, BUY now. This large specimen has oustanding quality, far above the pack!

D06-24 - Millerite on Calcite in geode - SOLD
Estabrook Park, Milwaukee, Wisconsin, USA
small cabinet, 6 x 4.5 x 3.6 cm

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Millerite on Calcite in geode from Estabrook Park, Milwaukee, Wisconsin, USA [db_pics/pics/d06-24a.jpg]

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Millerite on Calcite in geode from Estabrook Park, Milwaukee, Wisconsin, USA [db_pics/pics/d06-24b.jpg]

This specimen features a geode vug with colorless, lustrous, calcite crystals hosting a diverging spray of lustrous, brassy, millerite crystals to an inch cm in length. Note that the millerite from here is more cylindrcal and stout in form, compared to the hairy wires from Kentucky. This is as large a specimen as I have seen for the locality on the market in some time. I had the good fortune to find it in a French collection a month ago, and repatriated it. An aesthetic and impressive millerite, to be sure! These came out in the 1960s from a small locality in the middle of a city park, and it is not possible to colelct there any more. Specimens of this quality are VERY SCARCE. Actually, I am told it really was sort of a nightime thing in the past, too...

D06-26 - Oyelite on Calcite - SOLD
N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa
miniature, 3.2 x 3.1 x 2.2 cm

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Oyelite on Calcite from N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa [db_pics/pics/d06-26a.jpg]

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Oyelite on Calcite from N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa [db_pics/pics/d06-26b.jpg]

Oyelite is a fairly rare silicate, and these specimens are said by those who saw them at the show to be just remarkable, the best known yet. For me, I have not seen the mineral well-crystallized except as crusts with others atop, or as a crust atop xonotlite, in the past. And yet when i saw these I thought they actually looked like something rare that a normal person can appreciate for the size and importance of the crystals! This specimen freatures choice crystals to 8 mm

D06-27 - Oyelite on Calcite - SOLD
N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa
miniature, 4.6 x 4.4 x 3.4 cm

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This specimen freatures a choice crystal of 10 mm

D06-28 - Oyelite on Calcite - SOLD
N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa
miniature, 4.9 x 4.7 x 3.3 cm

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Oyelite on Calcite from N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa [db_pics/pics/d06-28a.jpg]

THE LARGEST CRYSTAL, to about 1.8 cm on largest edge, is perched on a beautifully trimmed matrix miniature!

D06-29 - Oyelite on Calcite - SOLD
N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa
miniature, 4.5 x 2.6 x 2.4 cm

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Oyelite on Calcite from N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa [db_pics/pics/d06-29a.jpg]

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Oyelite on Calcite from N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa [db_pics/pics/d06-29b.jpg]

Very aesthetic cluster with a central crystal of 11mm, flanked by cute smaller ones. Nice trim and display qualities!

D06-30 - Oyelite on Calcite - SOLD
N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa
miniature, 5.9 x 4.2 x 2.4 cm

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Oyelite on Calcite from N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa [db_pics/pics/d06-30a.jpg]

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Oyelite on Calcite from N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa [db_pics/pics/d06-30b.jpg]

Featuring a very sharp 8 mm crystal on nice matrix

D06-32 - Oyelite on Calcite - SOLD
N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa
small cabinet, 6.2 x 3.9 x 2.6 cm

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Oyelite on Calcite from N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa [db_pics/pics/d06-32a.jpg]

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Oyelite on Calcite from N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa [db_pics/pics/d06-32b.jpg]

A single beautiful, well-formed, isolated 9mm crystal perched on sparkling calcite matrix! This would probably make for a killer thumbnail, if trimmed down.

D06-33 - Oyelite on Calcite - SOLD
N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa
small cabinet, 6.0 x 5.0 x 4.2 cm

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Oyelite on Calcite from N�Chwaning II Mine, Kuruman, KMF District, Northern Cap, South Africa [db_pics/pics/d06-33a.jpg]

This was the richest small cabinet piece, for my taste, featuring distinct and isolated crystals to 7 mm , on good contrasting matrix. It is very 3-dimensional and displays well (it is actually complete around the backside with another coupla crystals on calcite there).

D06-34 - Plancheite (and Chrysocolla?) pseudo. after Calcite on Dioptase - SOLD
Tantara, Katanga, Republic of the Congo
miniature, 5.6 x 5.3 x 4.7 cm

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ex. Edward Swoboda

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WOW! This is a very rare specimen! These were found in the early 1980s, and the specimen consists of small calcite crystals on dioptase, that were completely replaced by the copper mineral plancheite and turned a rich blue in color. This is only at ONE end of the piece. AT THE OTHER END, the calcites have been replaced by chrysocolla, I think; or at least so heavily coated one cannot tell and its a moot point visually. This is a very interesting, colorful, and fun specimen from the prominent pseudomorph collection of Ed Swoboda (see MinRec nov/dec 1997). He sold to Carter Rich in 1999, who sold this to George Loud right after, and it now is coming back to the market.

D06-37 - Manganoan Calcite - SOLD
Concepcion del Oro, Zacatecas, Mexico
small cabinet, 9.1 x 7.2 x 6.2 cm

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ex. Martin Zinn

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Manganoan Calcite from Concepcion del Oro, Zacatecas, Mexico [db_pics/pics/d06-37a.jpg]

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Manganoan Calcite from Concepcion del Oro, Zacatecas, Mexico [db_pics/pics/d06-37b.jpg]

This attractive piece hosts beautiful roseate crystals of this rare calcite varietal, from finds in the late 1970s. Seldom available today!

D06-45 - Emerald on Calcite - SOLD
Panjshir Valley, Parwan Province, Northern Afghanistan
miniature, 4.0 x 3.4 x 2.0 cm

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Emerald on Calcite from Panjshir Valley, Parwan Province, Northern Afghanistan [db_pics/pics/d06-45a.jpg]

STUNNING, absolutely GEMMY, intense green emeralds in matrix from the Panjshirs! This is an amazing matrix miniature of unusual quality not just fo rthe matricx, but for the sheer quality of the crystals themselves which is unusual in Panjshiri specimens.

D06-50 - Cobaltian Calcite with Malachite - SOLD
Mashamba West , Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Za�re)
miniature, 3.5 x 2.7 x 2.3 cm

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A VERY beautiful, elegant crystal with a shiny, metallic cobaltian coating to it that is unlike any I have seen. Normally, you ge tpik calcites. This is pink, true, but not all the way through. Only the surface layer seems to be cobalt-rich, and that in itself is unusual. The result, for some reason, is this metallic shimmering effect. Associated is dark green malachite for just the right touch of accent! This is NOT cheap and not a bargain admittedly; but then again, its a fair price I think for something so rare and beautiful, and so unique a miniature of this material, that came out of the ground (as most did) over 15 years ago in the late 1980s. I have seen a lot of them, but none with quite this look to it.

D06-57 - Cobaltian Calcite - SOLD
Bou Azzer, Morocco
cabinet, 10.4 x 4.9 x 3.3 cm

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Cobaltian Calcite from Bou Azzer, Morocco [db_pics/pics/d06-57a.jpg]

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Cobaltian Calcite from Bou Azzer, Morocco [db_pics/pics/d06-57b.jpg]

Incredibly deep maroon, glassy, richly-colored disc-shaped crystals to 1 cm drape the entire upper portion of this specimen, and it is just gorgeous in person. It is very 3-dimensional, more so than the pic can convey, and is simply MUCH more dramatic and deeply colored than others I have seen recently. The crystals are almost gemmy in fact: these crystals really make the piece leap out from a showcase and impact you with color. I cannot rave enough. i was just blown away by it (in person, you'll see!)

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Rob Lavinsky, rob@irocks.com

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