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Mineral Specimens with Quartz
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This is a highly unusual double-stalactite of aragonite that has pseudomorphed to quartz at its core and is further surrounded by a thick layer of glittering, sparkly quartz (somewhat translucent when backlit) - an elegant, sculptural specimen from a new find in India! 9.1 x 4.4 x 2.2cm
Look at this bizarre Los Lamentos vanadinite specimen, with crystals growing on the tips of a cluster of quartz crystals! Notice how the vanadinites from here have the exact form of pyromorphites. OLD MATERIAL! 6.1 x 4.7 x 4.0cm
Standing an impressive 20 inches tall, this is a very fine "cathedral" geode of amethyst, not only filled with sparkly, lustrous crystals, but the amethyst crystals have pseudomorphed an earlier generation of large, euhedral quartz crystals. So instead of the usual "flat" wall of amethyst crystals inside, this one actually has dimension and structure, with these pretty spikes poking out in all directions. These fingers seem to be composed of amethyst pseudomorphed after calcite, with a secondary generation of amethyst coating! Very different from the usual "cathedral" amethyst - will make a fine centerpiece for any room! 48.9 x 18.6 x 11.5cm
An EXCELLENT and aesthetic, quartz-lined, thumbnail geode filled with brassy, flexible, felt-like millerite needles to 1.3 cm from an UNCOMMON Michigan locality, the Wallace Stone Quarry at Pigeon. From the noted thumbnail collection of Marilyn Dodge. 2.5 x 1.9 x 1.5 cm
A CLASSIC, old-time Cornwall specimen with sharp, matte-finish, black chalcocite crystals to 1.0 cm richly covering the contrasting quartz matrix. The one dinged chalcocite crystal is certainly not detracting from this fine old-timer. Ex Frank Edwards Collection. 3.7 x 2.8 x 1.7 cm
Gemmy orange-red spessartines sprinkled over a matrix of contrasting stark white euhedral feldspar, with smoky quartz points adding a nice accent. 5.1 x 4.7 x 3.6cm
A superb miniature of this most-prized variety of quartz, expensive and hard to obtain in specimens of this quality. These are sharp, gemmy,large and well-formed crystals! 3.5 x 3.3 x 2.9cm
Sparkly quartz crystals that have formed on and partially replaced an elegant 6-inch stalactite of aragonite! A cluster of stalactites at the bottom form a pretty "base" for the specimen. Prettier and more striking in person - this big, glittering stalactite will stand out in an mineral case! 16.4 x 7.3 x 4.4cm
HUGE, gemmy, light teal-blue fluorite crystals (to 3.5 cm on edge!), ranged along the top of a cluster of quartz, with minor accenting arsenopyrite crystals. There is a very minor bit of wear, but almost unnoticeable relative to the size of the specimen. These big crystals are so gemmy that you can see the matrix very clearly right through them! This large and impressive specimen can be displayed perhaps even more beautifully upright, with the biggest crystals at the top. 12.7 x 9.2 x 7.1cm
A beautifully-balanced old New Mexico specimen, combining iridescent red-and-gold chalcopyrite crystals with gemmy quartz crystals, on a plate of lustrous sphalerite. 7.7 x 5.8 x 2.6cm
These specimens were one of the few “new sensations” at the Tucson Show this year, especially as new finds were so scarce this year in general. We EXPECTED to see more at Denver but there were none to be had except for a small parcel which the collector had saved for us, based on a commitment we made right after Tucson when they flew off the shelves. The quartz crystal has a half-dozen purple-blue, sharp fluorite crystals included inside. The fluorites grew on the face of the quartz crystals at some point during their development in the pocket, and were later engulfed as the quartz continued its growth. The quartz crystals are more “silky” than lustrous in appearance. The guy who brought these from Madagascar said he is not sure how many more will come out – there was no way to tell if there will be more production. Crystal-in-crystal inclusions of this sort are of course quite exceptional, and are more often a one-off “oddity” than an entire pocket. 9.8 x 2.2 x 1.8cm
An OLD-TIME, sliced slab of a vein of spinel-twinned copper crystals and quartz from the famous Copper Queen Mine at Bisbee. The side with the yellowed label has been lacquered. This piece has to be around 100 years old or more. Such rich copper ore is very rare from Bisbee and this is thus an interesting historic slice of the mine, no pun intended! Ex Richard Hauck Collection. 8.9 x 6.9 x 0.6 cm
A beautiful and aesthetic cluster of lustrous, translucent smoky quartz crystals to 3.1 cm on lustrous, off-white albite crystals from the famous Pikes Peak area of Colorado. The large smoky is pristine and trivial termination bruises to the two right-hand crystals are certainly not detracting. 5.6 x5.2 x 2.5 cm
A big, fat, terminated (on one end) crystal of schorl tourmaline, with accenting cleavelandite and a quartz crystal that has wrapped itself around the side of the schorl. The termination and sharp faces of the quartz, the schorl and the cleavelandite all show on the display side. From the collection of Ed Ruggiero, with his original index card showing it to have been purchased from Lidstrom''s at the Houston Show in 1975. 8.5 x 7.3 x 7.0cm
This is a large, superb doubly-terminated specimen from a find that represented one of the few “new sensations” at the Tucson Show this year, especially as new finds were so scarce this year in general. We EXPECTED to see more at Denver but there were none to be had except for a small parcel which the collector had saved for us, based on a commitment we made right after Tucson when they flew off the shelves. The quartz crystal has a dozen purple-blue, sharp fluorite crystals included inside. The fluorites grew on the face of the quartz crystals at some point during their development in the pocket, and were later engulfed as the quartz continued its growth. The quartz crystals are more “silky” than lustrous in appearance. The guy who brought these from Madagascar said he is not sure how many more will come out – there was no way to tell if there will be more production. Crystal-in-crystal inclusions of this sort are of course quite exceptional, and are more often a one-off “oddity” than an entire pocket. This crystal has a small ding on one of its termination, but that is common for these, and in fact this is in great condition for the find! 9.2 x 3.2 x 2.6cm
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Rob Lavinsky, rob@irocks.com
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share specimen![Quartz, Aragonite from Jalgaon District, Maharashtra, India [db_pics/mdpics/MD-44135a.jpg]](db_pics/mdpics/MD-44135a.jpg)
![Vanadinite (Var: Arsenatian Vanadinite), Quartz from Los Lamentos Mts (Sierra de Los Lamentos), Mun. de Ahumada, Chihuahua, Mexico [db_pics/mdpics/MD-44136a.jpg]](db_pics/mdpics/MD-44136a.jpg)
![Quartz (Var: Amethyst) from Rio Grande do Sul, South Region, Brazil [db_pics/mdpics/MD-44360a.jpg]](db_pics/mdpics/MD-44360a.jpg)
![Millerite, Quartz from Wallace Stone Company Quarry (Wallace Quarry; Bayport Quarry), Pigeon, Huron Co., Michigan, USA [db_pics/mdpics/MD-44383a.jpg]](db_pics/mdpics/MD-44383a.jpg)
![Chalcocite, Quartz from Cornwall, England, UK [db_pics/mdpics/MD-44412a.jpg]](db_pics/mdpics/MD-44412a.jpg)
![Spessartine, Quartz (Var: Smoky Quartz) from Wushan Spessartine Mine, Tongbei, Yunxiao Co., Zhangzhou Prefecture, Fujian Province, China [db_pics/mdpics/MD-44420a.jpg]](db_pics/mdpics/MD-44420a.jpg)
![Quartz (Var: Rose Quartz) from Galiléia, Doce valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-44422a.jpg]](db_pics/mdpics/MD-44422a.jpg)
![Quartz from Jalgaon District, Maharashtra, India [db_pics/mdpics/MD-44450a.jpg]](db_pics/mdpics/MD-44450a.jpg)
![Fluorite, Quartz, Arsenopyrite from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-44516a.jpg]](db_pics/mdpics/MD-44516a.jpg)
![Chalcopyrite, Sphalerite, Quartz from Groundhog Mine, Vanadium, Central District, Grant Co., New Mexico, USA [db_pics/mdpics/MD-44592a.jpg]](db_pics/mdpics/MD-44592a.jpg)
![Quartz, Fluorite from Amborompotsy, Ambatofinandrahana District, Amoron'i Mania Region, Fianarantsoa Province, Madagascar [db_pics/mdpics/MD-44681a.jpg]](db_pics/mdpics/MD-44681a.jpg)
![Copper, Quartz from Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA [db_pics/mdpics/MD-44693a.jpg]](db_pics/mdpics/MD-44693a.jpg)
![Quartz (Var: Smoky Quartz), Albite from Park Co., Colorado, USA [db_pics/mdpics/MD-44700a.jpg]](db_pics/mdpics/MD-44700a.jpg)
![Schorl, Tourmaline, Quartz from Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-46546a.jpg]](db_pics/mdpics/MD-46546a.jpg)
![Fluorite, Quartz from Amborompotsy, Ambatofinandrahana District, Amoron'i Mania Region, Fianarantsoa Province, Madagascar [db_pics/mdpics/MD-46794a.jpg]](db_pics/mdpics/MD-46794a.jpg)