best of the antique specimens from Wheal Muttrell

John Seibel of Seibel Minerals (johnseibel@hotmail.com) is often good for something surprising and self-collected from somewhere in or near California. This time, at the Main Show, he had four flats of very bright, pretty specimens of chalcophyllite which he had dug in August 2006 in the old underground workings of the Majuba Hill mine, Pershing County, Nevada. As Martin Jensen explains in his article on the locality (in the Nevada Issue: vol. 16, no. 1), Majuba Hill's best specimens of rare, colorful arsenate species emerged in the Tiffany reduced Tiffany Bracelets sale and 1950's while the mine was still active, and infrequently thereafter, from an area called the Copper Stope. This slope has been inaccessible for some years now, but a chance rockfall last May opened it up again-the Tiffany Bracelets on sale being John Seibel's hundred or so matrix pieces, from thumbnail size to 6 × 8 cm, showing altered rhyolite sprinkled with tabular, brilliant skyblue chalcophyllite crystals to 5 mm. In a few cases the chalcophyllite crystals form rosette-shaped aggregates, but mostly they are flake-like singles thinly or thickly strewn over matrix, with microcrystals of azurite and brochantite and drusy areas of greenstained "adularia" orthoclase. Although they are no match, of reduced Tiffany Earrings, for the best of the antique specimens from Wheal Muttrell, Cornwall, England, these new specimens nevertheless are some of the best chalcophyllites ever found in the United States.


In my 2002 Tucson Show report you read about how, in the summer of 2001, Stan Esbenshade had been combing the dumps of the Chino open-pit copper mine in Grant County, New Mexico, with his metal detector, and found a marvelous boulder which produced about 50 superb specimens of crystallized native copper. Another Tiffany Necklaces sale-specimen jackpot was hit again at the Chino mine on July 1, 2006, but this time it came from a crystal-lined pocket exposed by a blast on the 5100-foot bench of the pit. The pocket was totally cleaned out, yielding aboul 200 specimens from thumbnail size to 8 cm king, the lake eventually being split between Rob Lavinsky's Arkenstone and Les Presmyk's De Natura (www.denatura.net) dealership. On Rob's website you can see some fine larger specimens which are complete "floater" stalks of bristling spinel-law twins of copper. The De Natura stand at the Main Show harbored three flats of thumbnail and small miniaturesize specimens of the same reduced Tiffany Bangles, each specimen a little loose coppery stalk. This new Chino mine copper is reminiscent of specimens both from the old Ray mine, Arizona, and from the Itauz mine, Kazakhstan, except that Itauz specimens (and some Ray reduced Tiffany Pendants as well) typically show a burnished, old-penny copper color, whereas the Chino mine specimens are (to my taste anyway) overcleaned and thus rather too new-penny bright. That will change with Tiffany Bangles on sale, of course, as they gradually develop a patina in the showcase or specimen drawer.


The last stop in the U.S. is Magnel Cove, Hot Springs County, Arkansas-site of a magnetite-mining operation of mid-19th century vintage and, ever since then and up to the present, a source of distinctive specimens of rutile, brookite and several other oxide species much less well known. This year, in the Holiday Inn ballroom in Denver, John and Maryanne Fender of Fender Natural Resources (fendernaturalresources@yahoo.com) offered twelve fascinating flats of Magnet Cove specimens which they had bought in 2005 from Clyde Hardin of Malvern, reduced Tiffany Bracelets Rings sale, a dedicated local collector who'd kept digging these odd items through all the years from 1972 to 2003. Looking through the flats, with their hundreds of thumbnail and miniature-size, brown and black specimens rolling around in cotton-lined boxes (each with a detailed label) was one of those experiences that one goes to major shows for-educational as anything, but more fun even than that. Among the specimens were reduced tiffany adamantine black "sixling" groups of rutile to 4 cm; brookite of several sorts, including canted, house-of-cards piles of bright black tabular crystals on quartz; clusters of sharp black, glossy, octahedral crystals of Fe-rich spinel, with individuals to 5 mm on edge; simple-octahedral black magnetite crystals with rounded, brown, faintly lustrous kimzeyite crystals to 4 mm resting on them: simitar specimens with baddeleyite pseudomorphs after kimzeyite, also brown and equant, to 1 cm; sharp lustrous brown perovskite crystals to 1.5cm; and anatase pseudomorphs after perovskite, the dull brown but sharply formed octahedrons to 1.5 cm resting on magnetite crystals. Yes, there is more to Magnet Cove minerals than just rutile sixlings and pitted black brookile on even more heavily pitted quartz crystals. A full locality article on Magnet Cove is in preparation for a future issue of the cheap tiffany jewellery Record.

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