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Mineral Specimens with Calcite
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A gem of a calcite, standing up like a jewel on the matrix, with wonderful sharp faces and gorgeous glassy luster. Complete and undamaged all around. This is an exceptional piece for the locality but heck, it’s a good calcite from anywhere. Sold for a friend from a local collection so make him happy. 4.8 x 5 x 2 cm
A very aesthetic cluster of translucent, lustrous and striated golden-amber doubly-terminated calcite crystals on matrix from the Viburnum Trend of Missouri. A couple of very trivial bruises on the calcite crystals certainly do not detract. Much better than the usual Sweetwater Mine calcites. I bought this out of a miner''s collection last summer. 7.5 x 6.5 x 4.0 cm
A SUPERB, FULLY COMPLETE fossilized mollusc with a vug lined with beautiful amber dogtooth calcite crystals. New material from Florida! 12.5 x 9.8 x 5.5 cm
Gorgeous calcite rhombs with shimmering surface luster and NO damage perched amongst quartz needles. The crystals are situated in such a way as to create a perfect display face for the specimen, with the largest crystal (2.5 cm) crowning the specimen. 5.0 x 4.3 x 3.6 cm
4.2 x 3.9 x 3.0 cm. A fabulous, gorgeous, blocky calcite crystal on bubbly, banded calcite matrix from the Verchniy Mine at Dal’negorsk. This amazingly water-clear, pristine, sharply hexagonal crystal has a beautifully striated, complex termination. This calcite crystal looks like a cut gemstone. Dal’negorsk calcites of this quality came out in the early 1990s, with very few since.
15.5 x 12.0 x 8.4 cm. Glassy, yellow, "window-pane", wulfenite crystals are aesthetically festooned on gossan matrix. The tabular wulfenites reach 1.2 cm and are nicely accented with lustrous, white calcite crystals. Ex. Consie Prince collection/dealer stock.
3.3 x 2.6 x 1.7 cm. A fine and aesthetic cluster of upright, brilliant, reddish-orange wufenite crystals from the "last hurrah" of the famous and now-closed Red Cloud Mine - the 2003 Red Gem Pocket. Sharply beveled crystals to 1.5 cm comprise this specimen, which is nicely highlighted by a couple of attached calcite crystals.
21.7 x 16.0 x 6.7 cm. The well-known mines of Charcas, Mexico are famous for their sharply hexagonal, "poker-chip" style of calcite crystals. The huge, 16.5 x 15.7 cm crystal has smaller, parallel-growth crystals aesthetically attached on one end. All of the crystals are lustrous, and grade from porcelaneous white to gray to gemmy, colorless. Ex. Dan Brock Collection.
4.3 x 3.8 x 3.6 cm. The Dr. Miguel Romero Collection of Mexican minerals was universally considered to be the world’s finest. It was on display for many years, following his death, at the University of Arizona Mineral Museum. His collection recently sold and was the subject of a special supplement to the Mineralogical Record. This striking, beautiful and fine fluorite and calcite specimen from Chihuahua was on display at the University. A gorgeous, 1.5 cm, limpid, green and purple fluorite cube with modified, cuboctahedral corners dominates this very fine piece. The purple phantoms along the edges of all of the fluorite cubes are striking.
7 x 5.2 x 3 cm. The Calcite (often referred to as Aragonite in this material...I was told that the analysis had been made) stalactites of Carter County are renowned for their form and color. This particular specimen is a superb example not only for the fact that is has the classic deep red- orange color and good translucence, but that the main stalactite is completely intact. This specimen was part of the old Miller calcite collection sold to Victor Yount in the mid 1990s. The piece was undoubtedly collected by Bud Ehrle in the late 1970's as all the good ones like this came from him, I am told.
10.6 x 6.2 x 3.9 cm. A bizarre, sculptural, matrix-free specimen of calcite from Charcas, featuring stacked hexagonal crystals of the "poker-chip" style on an anchoring crystal of 6.5 cm. The crystals are lustrous on selective faces. Ex. Consie Prince Collection.
10.4 x 8.5 x 7.5 cm. The Asturias region of Spain is best known for its fluorites from the Berbes area, often associated with blue or gray barytes. But this specimen, from lesser-known Oviedo, features bladed, flattened crystals of milky baryte piled up richly on a cluster of shiny, translucent calcite crystals.
8.4 x 8.4 x 4.8 cm. This is an unusual and fine calcite specimen. It features a very large, tabular crystal with hexagonal form, complete all the way around the edges, attached to a smaller crystal in back. It is translucent through the middle, with frosty white faces. There are bits of matrix attached, but no clear attachment point - it is essentially a floater.
12.0 x 10.9 x 6.4 cm. This is an utterly spectacular, large and beautiful specimen from Charcas, which is known for these disc-like calcites, but not typically of this magnitude or overall aesthetics. A chunkier crystal serves as the base, and stacked together atop it is a cluster of whopper crystals, to 7 cm across. They are frosty on the side faces, and glossy and transparent around the edges. Ex. Nowakowski Collection.
12.4 x 8.0 x 4.7 cm. A large plate of spiky scalenohedral calcite crystals with a shimmering surface sheen, with water-clear blades of gypsum growing amongst them. The calcites have an unidentified coating that gives them a yellowish color. Ex. Stoudt Collection.
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Rob Lavinsky, rob@irocks.com
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