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Mineral Specimens with Calcite
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5.9 x 3.9 x 2.9 cm. The original pink calcite crystals here have been pseudomorphed by glimmering, snowy-white dolomite, perfectly retaining the sharp faces of the calcites. Some of the calcites are actually etched out from the inside of the pseudomorphs, so they are hollow now; you can see this from the one crystal that is incomplete at the edge of the specimen (lower left in photo). Ex. Consie Prince Collection.
13.7 x 13.0 x 10.0 cm. This very unusual and large old Bisbee calcite specimen came out of the collection of Dave Stoudt, who bought it from a private collector in Tucson in 2001. It is an exquisitely sculptural and 3-dimensional aggregate of poker-chip calcites, showing both translucent, shiny areas and a colorful iron-oxide coating. Calcite specimens were preserved by miners from the very early days of this most classic of American mines, as they had no commercial value and therefore the mining companies did not care, but the miners respected them for their beauty and variety. Dave Stoudt collected quite a variety of Bisbee calcites himself.
7.2 x 6.4 x 5.2 cm. This glistening cluster of calcite is actually composed of hundreds of small, disc-like crystals with pyramidal terminations, piled into towers several centimeters high. The faint pastel pink color is from manganese content, rather common in specimens from this mining area.
16.0 x 11.0 x 7.0 cm. A superb cluster of large, pristine crystals of calcite, centered perfectly on a perfectly-trimmed matrix, from a recent find in China. The large crystal you see here measures 6.5 cm across. It and the other crystals are fabulously lustrous, and have gentle striations on selective faces that add a lot of character. The crystals really glow under good light. They sit on a bed of colorless, jewel-like little calcites.
8.4 x 6.4 x 4.4 cm. This is quite an unusual specimen, even for a prolific mine that has turned out more than its share of mineral specimens. First, the fluorites have ghostly phantoms inside - some of them, colorless phantoms in a field of purple, and others, purple-outlined in a colorless field. But also, the association with these hexagonal, prismatic calcites makes the specimen even more unusual and interesting.
9.9 x 4.9 x 4.8 cm. A superb calcite twin. It has beautiful symmetry, high luster, wonderful glowing amber color, and pretty striations on its faces. There is an interesting phenomenon that can be seen on the back of the crystal, where a lustrous "skin" appears to be wrapped around silky faces.
7.6 x 6.5 x 7.0 cm. A pristine, aesthetic, old-time calcite specimen from the Eagle Picher Mine of the Oklahoma portion of the famed Tri-Sate District. A 6.4 cm, translucent, lustrous, doubly terminated, light amber calcite crystal is beautifully angled and perched on shard of calcite rhomb-covered matrix. There is an interesting welt in the middle of the calcite crystal and the pyramidal terminations are excellent. Ex. George Feist Collection. The height measurement includes the base.
5.8 x 4.4 x 4.3 cm. An unusual and fine calcite specimen from Asturias, Spain. Two generations of calcite comprise this pair of modified scalenohedrons. The opaque cores on both crystals have a second generation overgrowth of lustrous, translucent, golden amber to tan calcite. The large crystal has a distinct interior phantom. The smaller calcite is very interestingly twinned. This fine calcite was collected by Spanish collector/dealer Fernandez Buelga in July 2008.
A GORGEOUS and pristine radiating CABINET spray of lustrous, translucent and colorless wheatsheaf calcite crystals on matrix from Irai, Brazil. Far better than the usual Brazilian calcites that you see. Large and impressive specimens! 13.4 x 10.5 x 6.5 cm
A SUPERB and AESTHETIC cluster of transparent to transparent, lustrous and lightly etched calcite scalenohedrons included with marcasite from a classic Scottish locality. The vertical crystal is perfect and there is a very trivial bruise to the termination of one of the flat-lying crystals. A classic old-time specimen. Ex Gene Meieran Collection. 6.8 x 6.4 x 6.4 cm
A SUPERB, DRAMATIC AND PRISTINE radial cluster of water-clear, lustrous calcite crystals with complex terminations. All termination faces are striated and all prism faces are glassy smooth. The largest crystal is 4.0 cm and is doubly terminated and twinned. There is one, very small attachment point on this beautiful specimen. This classic old-time specimen is from Egremont, England. 7.3 x 6.7 x 6.2 cm
This specimen would be considered a very rich example because of the eye-visible wealth of bright , gemmy yellow crystals present; and comes with a label from Gilles Haineault showing that he collected it in April of 2000. The crystals are not sparse at all and a whole seam of them is easily seen without needed visual aid. The piece has several EXCEPTIONALLY large crystals including one partially embedded crystal of approx. 5mm . BETTER IN PERSON! 3.5 x 2.4 x 1.8 cm
This specimen would be considered a very rich example because of the eye-visible wealth of bright , gemmy yellow crystals present; and comes with a label from Gilles Haineault showing that he collected it in April of 2000. The crystals are not sparse at all and a whole seam of them is easily seen without needed visual aid. The piece has several EXCEPTIONALLY large crystals including one partially embedded crystal of approx. 4mm . BETTER IN PERSON! 3.9 x 3.5 x 2.4 cm
4.5 x 3.5 x 1.8 cm. Silvery needles of stibnite shooting through a transparent crystal of calcite. The calcite is razor-sharp around the edge.
10.4 x 8.0 x 5.6 cm. A sculptural and dramatic cluster of large, razor-sharp rhombs of calcite, attractively alternating colorless, frosted faces with iron-oxide-included ones. The crystals here measure to 4.5 cm on edge.
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Rob Lavinsky, rob@irocks.com
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