Mineral Specimens with Calcite

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T06-133 - Barite, Quartz, Calcite - SOLD
Nikolai Mine, Dal'Negorsk, Russia
cabinet, 10.4 x 8.2 x 4.9 cm

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This is a rare treasure indeed, one of just a few specimens found in a freak pocket about a decade ago. It is from the personal collection of a Russian mineral dealer, that was privately sold at the show (name on purchase). The piece is PERFECT. It is undamaged, and complete all around. It consists of a doubly-terminated golden barite crystal, with gem terminations, perched on quartz matrix. It just about sits on its own, even. A 3-cm crystal of disc-shaped calcite sits adjacent to the upper barite termination, for accent. The barite itself measures 8 x 2.5 x 2 cm or so. In my years, i had ONLY SEEN ONE OTHER from this pocket before, ever! And this one blows it away....I am told it is one of the two best known. This is a rare gem crystal, a rare Russian piece, and just a superb aesthetic specime nby any standard. It is from the private collection of a dealer who was involved in early specimens coming out of Dalnegorsk.

T06-135 - Dioptase with Calcite - SOLD
Altyn-Tyube, Karaganda Oblast, Kazakhstan (TYPE LOCALITY!)
large cabinet, 16.8 x 9 x 4.5 cm

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Measure this out on a ruler! This is one BIG dioptase specimen! If it were from TSUMEB, you'd be looking at a piece 3-4x more expensive. For some reason, even when they are as good as tsumeb material such as this piece is, Russian diop's do not get the monetary respect they deserve and so a big cabinet piece from Russia is a relative bargain compared to its peers from Africa. Ironic, as this is the type , original , locality for the species! What makes this piece special is both the rich coverage and the 3-dimensional topography that means it is not just a flat plate. The calcite, as an accent, is most unusual and really makes the piece even more special. The display face is simply incredibly stunning in person, with green flashes coming at you every which way. As with all photographed dioptase, it is MORE IMPRESSIVE IN PERSON.

T06-153 - Calcite (twinned) - SOLD
Babu area, Guangxi Province, China
large cabinet, 25.1 x 18 x 9.8 cm

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WOW. This is one of the top specimens, for size and completeness, from this now famous find of perhaps 5 years ago. It is COMPLETE ALL AROUND, 3-dimensional, PERFECTLY SYMMETRIC, and just awe-inspiring when you think this is a HEART TWIN that weighs 10 pounds or so! Certainly bigger than English locales ever made 'em! The piece is unique, so far as i know, for this pocket because it has a hematite or limonite-included phantom within (best viewed from one side for sharpness). I have not seen others with such a phantom.

T06-156 - Galena and Calcite - SOLD
Sweetwater Mine, Reynolds Co., Missouri, USA
large cabinet, 12 x 10 x 10 cm

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Galena is certainly common enough, but a large specimen combining the quality and aesthetics you see here...that is most uncommon! This piece features a pristine, 3-dimensional, SUPERB galena crystal sitting perfectly atop matrix, showing from ALL angles 360-degrees around, and perched amongst a nest of complementing calcites. Without the calcite accent, it would be a little more boring and typical. With the calcites and the placement of the crystal together, it is one of the finest for its size I have ever seen, amongst thousands of such pieces over 20 years. The galena measures 5.5 x 5 x 5 cm in size and is perfect! IT IS MUCH MORE LUSTROUS IN PERSON, TOO!

T06-158 - Manganoan Calcite - SOLD
near Schneeberg, Schneeberg District, Erzgebirge, Saxony, Germany
small cabinet, 6.6 x 6.6 x 4.6 cm

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This matrix calcite is rare, very old, and extremely aesthetic. The intense pink color, luster and translucence make this a once-in-a-lifetime occurrence. I had never seen one for sale before, only reading of them in old books. In fact, the calcite crystals exhibit a darker orange-pink color at the base and grade into the rich pink color toward the termination. The largest cluster, which measures almost 3.5 cm in length, majestically rises from the matrix. There is minor peripheral damage but, obviously, is of no significance in context of this magnificent and historic piece , which still displays quite nicely. There is a photo of a similar old pink calcite in the July-August, 2005 of Lapis magazine. In my estimation, the latter piece doesn�t hold a candle to our specimen.

T06-198 - Rhodonite with Calcite - SOLD
Broken Hill, New South Wales, Australia
miniature, 3.4 x 2.7 x 2.3 cm

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Rhodonite with Calcite from Broken Hill, New South Wales, Australia [db_pics/pics/t06-198a.jpg]

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Rhodonite with Calcite from Broken Hill, New South Wales, Australia [db_pics/pics/t06-198b.jpg]

This is an ever more rare form of rhodonite, from a small find back in the 60s (i am told). It has association with sharp black crystals of bannisterite (more on the backside). The major crystal here is 2 cm, and doubly-terminated. I have seen just a handful of these for sale. They grew in a free pocket, not in association and embedded in galena as with most BH rhodonites. Thus, the crystals have really perfect faces and terminations not rounded or constrained by contact. The color saturation is lower, but the elegance factor is higher. And, they are super-rare

T06-317 - Calcite on Matrix - SOLD
Tsumeb Mine, Namibia
cabinet, 13.6 x 6.3 x 4.1 cm

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Calcite on Matrix from Tsumeb Mine, Namibia [db_pics/pics/t06-317a.jpg]

Colorless rhombohedrons of calcite from Tsumeb are generally cloudy and, therefore, only translucent. This, however, is an exceptional difference. A series of 3.0 cm across calcite rhombs are colorless, mostly transparent, lustrous, and perched aesthetically across a ridge of matrix which has been dusted a pale green, possibly by mottramite. There is minor peripheral contact, but it does not affect this superb display specimen. Fine Tsumeb specimens, like this one, have been harder to find since the closing of the mine. The line of crystals is very 3-dimensional, and dramatic - better in PERSON!

T06-318 - Barite on Calcite - SOLD
Elk Creek, Meade Co., South Dakota, USA
small cabinet, 5.9 x 5.4 x 4.8 cm

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ex. Martin Zinn

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Barite on Calcite from Elk Creek, Meade Co., South Dakota, USA [db_pics/pics/t06-318a.jpg]

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Barite on Calcite from Elk Creek, Meade Co., South Dakota, USA [db_pics/pics/t06-318b.jpg]

An incredible piece for the size! This has the finest quality and gemminess you can ask for. the tips of the crystals are sharp, and lustrous, and to 4 cm. It has highest luster, gemminess, and just superb 3-D aesthetics! Marty was one of the locals around when Collectors Edge was mining this material, and bought one of the best of the finds. This IS superb, and worthy of the collection he built, and any other.

T06-345 - Helvite, Manganocalcite, Quartz - SOLD
Pachapaqui, Ancash Dept., Peru
miniature, 5 x 4 x 3 cm

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From a onetime find in Peru in the early 90s, this is said to be one of the very best specimens (the other being a famous thumbnail in the Ralph Clark Collection). This specimen, from the Peruvian subcollection of Cal and Kerith Graeber, is an attractive miniature overall and features two SHARP, LEMON-YELLOW crystals of 4.5 to 6 mm on edge. The helvites are sharply tetrahedral in form, and they are so sharp and colorful they look fake. It is a supremely good rarity, and a classic form Peru that is almost unobtainable.

T06-36 - Rhodochrosite ps. after Calcite - SOLD
Oppu Mine, Aomori Prefecture, Honshu Island, Japan
miniature, 5 x 4.9 x 2 cm

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Rhodochrosite ps. after Calcite from Oppu Mine, Aomori Prefecture, Honshu Island, Japan [db_pics/pics/t06-36a.jpg]

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Rhodochrosite ps. after Calcite from Oppu Mine, Aomori Prefecture, Honshu Island, Japan [db_pics/pics/t06-36b.jpg]

A superb, richly colored specimen with large and complete replacement of calcite crystals by rhodochrosite. This is an unusually fine example of this rare, old material. It is gorgeous!

T06-55 - Calcite (twinned) on Amethyst with Pyrite - SOLD
near Irai, Rio Grande do Sul, Brazil
small cabinet, 9.6 x 4.8 x 5.5 cm

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A unique specimen, like none I have seen before from this region. It features a superb, gemmy, transparent, twinned calcite measuring 3 cm across, perched with smaller calcites cascading down the termination of a deep purple amehtyst point. It is amazing such a thing survived being found and cut out of the enclosing amethyst cathedral in which it surely grew. The lustre, and contrasting colors, the complex form of the calcite...all combine to make this a really stunning and unique piece.

T06-61 - Galena, Siderite, Calcite - SOLD
Neudorf, Harz Mtns., Germany
small cabinet, 7 x 5.3 x 3 cm

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Galena, Siderite, Calcite from Neudorf, Harz Mtns., Germany [db_pics/pics/t06-61a.jpg]

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Galena, Siderite, Calcite from Neudorf, Harz Mtns., Germany [db_pics/pics/t06-61b.jpg]

One of the most fervently treasured of all German classics are these metallic, carved-looking galenas from the Harz, circa the mid-1800's. The best of them have contrasting association with siderite. This one, as well, has calcite for further accent - I have never seen before! It is a very attractive specimen, and has excellent quality 2 cm crystals on the front display, balanced above the contrasting carbonates. It is contacted on the sides and back, but the display face is so good. I have seen very few for sale in recent years, and they tend to be extremely expensive - I saw dribs and drabs of half the quality for twice the price in Munich on the European market where they are so highly valued, in fact.

T07-112 - Prehnite pseudomorph after Calcite - $ 650
Aurangabad, Maharashtra, India
small cabinet, 9.1 x 6.8 x 2.6 cm

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Prehnite pseudomorph after Calcite from Aurangabad, Maharashtra, India [db_pics/pics/t07-112a.jpg]

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Prehnite pseudomorph after Calcite from Aurangabad, Maharashtra, India [db_pics/pics/t07-112b.jpg]

A druse of pastel-green, translucent prehnite, has replaced tabular, well formed crystals of calcite to 4.5 cm across. Highly aesthetic, and stark in its form, this is a fine example of this rare Indian pseudomorph style. All of this is on a thin crust of matrix that has also been changed to prehnite!

T07-42 - Calcite "flower" - SOLD
Bao Shan, Yunnan Province, China
small cabinet, 7.0 x 4.6 x 4.1 cm

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This unusual doubly terminated, cave-growth calcite exhibits extreme hopper growth! The result is to give this specimen a truly, unusual appearance, much like that of a flower. This is the most equant and pristine example I saw of a table full of this material, and impressed me very much when I saw it. I think its just mesmerizing, sitting there in a showcase looking into it.

T08-08 - Chabazite with Calcite - SOLD
Wasson�s Bluff, Cumberland County, Nova Scotia, Canada
miniature, 3.9 x 3.7 x 2.4 cm

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A sharp cluster featuring very rich color, and an unusual association with crystallized calcite! This is new material collected recently from this classic old locality that is difficult to access, by my friend Rod Tyson (a semi-retired mineral dealer and well-known Canadian field collector!).

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Rob Lavinsky, rob@irocks.com

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