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Mineral Specimens with Quartz
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4.2 x 3.4 x 1.2 cm. Japan-law twins are actually rare from Arkansas, despite the prodigious quantities of quartz that have come from there over the decades. This fine twin came out of the collection of George White. It is complete all the way around, with fine sharp edges, and wonderfully transparent. You can see the gentle striations that decorate its faces.
8.4 x 6.0 x 4.4 cm. Though these are contemporary, they have a very "classic" look about them, to me. Clear quartz prisms rise from a bed of thinly bladed hematite.
12.9 x 9.4 x 5.4 cm. Complex, frosty crystals of fluorite with water-clear interiors cover a matrix of solid galena, with a layer of bright galena crystals underneath the fluorites. Patches of quartz and calcite crystals add a pretty accent to the fluorites. The fluorites alternate frosty faces with transparent "windows" into the clear interiors. Ex. Consie Prince Collection.
6.9 x 4.0 x 2.9 cm. Amethyst crystals from the George Smith farm north of Rice in Virginia are notable for their intense, glowing deep purple color - similar to Bolivian amethyst but even more smoldering. This one was probably collected back in the 1960s. Ex. Richard Hauck Collection.
5.1 x 4.5 x 3.0 cm. An old-time combination specimen from Plumas County, which at the Grizzly Mine and other localities has a pretty strong record of producing good smoky quartz specimens. It is the combination here which is so interesting: the smoky quartzes are intergrown with balls of muscovite mica and radiating crystals of schorl tourmaline. Ex. Richard Hauck Collection.
9.5 x 3.4 x 2.4 cm. This is a large, superb, and interesting Brandberg crystal. Most dramatic is the offset, parallel growth, with reverse sceptering. Add to this an easily visible enhydro (a moving bubble trapped inside a water pocket). And on top of all this, the clarity is magnificent, with a stunning mix of blushes of smoky and amethystine hues inside. Glassy luster, too. Ex. Richard Hauck Collection.
17.9 x 11.9 x 6.4 cm. A spectacular combination of two Swiss Alpine classics, in a large size. One half of this plate is dominated by glassy quartz crystals which in their clarity immediately say "Swiss". The other half is covered with sharp, frosty crystals of adularia (to 1.3 cm). Ex. Dave Michaels Collection, who does sports promos for NFL games.
16.0 x 2.5 x 2.5 cm. A stunningly long, tapered "icicle" of quartz from Diamantina. In person, it is actually more transparent than the photo indicates. The lower part of the crystal tapers in more dramatically, then the crystal continues on for another 10 cm at roughly the same thickness before slanting in to terminate. Ex. Richard Hauck Collection.
What an interesting combination piece this is! A very nice quartz crystal (very minor ding on the tip) girdled with glassy, twinned modified dolomite crystals with light-blue phengite along the bottom. Three nice minerals for the price of one . BETTER IN PERSON! 4.5 x 2.5 x 2.2 cm
5.8 x 4.6 x 3.5 cm. A rare and striking combination specimen from the Erongo Mountains of Namibia. A very sharp, translucent, two-toned green fluorite octahedron with very interesting, stepped, secondary overgrowths is stunningly flanked by glassy amethyst crystals with gorgeous, star-shaped, oriented, darker amethyst areas. The fluorite is beautifully lustrous. These came from a rare, one-time pocket find.
10.0 x 6.8 x 5.1 cm. Splendent, striking, preferentially etched, cuboctahedral galena crystals with associated quartz form this fine cabinet specimen from Dal’negorsk, Russia. The prominent crystals are perched on the top of the piece. The large crystal is 2.5 cm. Some of the galena crystals on the back are even skeletal. There are even a couple of pyrrhotite crystals scattered about. This material came out in the early-mid 1990s.
10.9 x 5.8 x 4.4 cm. An extraordinary and very rich cabinet specimen, in which a group of lustrous, prismatic, black babingtonite crystals to 1.7 cm dominate the skyline. This fine combination specimen is aesthetically enhanced on a matrix of tilted, layered quartz and spheroidal green prehnite. Some of the large crystals have cleaved terminations, as they were contacted against the top of the pocket.
9.2 x 6.1 x 4.6 cm. Sharp, very gemmy and lustrous, cherry-red cinnabar crystals to 1.2 cm are aesthetically scattered on a contrasting vug lined with dolomite and quartz. All of the cinnabar crystals are pristine. This fine specimen is from the Tongren Mine, China.
6.7 x 5.0 x 3.8 cm. A fine and unique amethyst and quartz specimen from recent finds at the Fengjiashan Mine of China. Sharp, translucent, color-zoned amethyst crystals with lustrous, stepped-growth faces are preferentially coated with drusy quartz and tiny, doubly terminated calcite crystals. The small amethyst crystals in the front are doubly terminated and the large amethyst is 4.2 cm.
8.7 x 7.2 x 2.8 cm. Two clusters of gemmy, golden-brown, prismatic, parallel-growth brookite blades are aesthetically set in a plate of very glassy, water-clear quartz crystals. The brookite cluster on the right is 3.0 cm across.
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Rob Lavinsky, rob@irocks.com
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share specimen![Quartz from Collier Creek Mine, Mt Ida, Montgomery Co., Arkansas, USA [db_pics/mdpics/MD-209761a.jpg]](db_pics/mdpics/MD-209761a.jpg)
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![Quartz from Diamantina, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-209857a.jpg]](db_pics/mdpics/MD-209857a.jpg)
![Dolomite, Quartz, Phengite from Serra das Éguas, Brumado (Bom Jesus dos Meiras), Bahia, Northeast Region, Brazil [db_pics/mdpics/MD-20986a.jpg]](db_pics/mdpics/MD-20986a.jpg)
![Fluorite, Quartz (Var: Amethyst) from Erongo Mountain, Usakos and Omaruru Districts, Erongo Region, Namibia [db_pics/mdpics/MD-209867a.jpg]](db_pics/mdpics/MD-209867a.jpg)
![Galena, Pyrrhotite, Quartz from Nikolaevskiy Mine, Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Primorskiy Kray, Far-Eastern Region, Russia [db_pics/mdpics/MD-209869a.jpg]](db_pics/mdpics/MD-209869a.jpg)
![Galena, Pyrrhotite, Quartz from Nikolaevskiy Mine, Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Primorskiy Kray, Far-Eastern Region, Russia [db_pics/mdpics/MD-209869b.jpg]](db_pics/mdpics/MD-209869b.jpg)
![Babingtonite, Prehnite, Quartz from Qiaojia, Qiaojia Co., Zhaotong Prefecture, Yunnan Province, China [db_pics/mdpics/MD-209875a.jpg]](db_pics/mdpics/MD-209875a.jpg)
![Babingtonite, Prehnite, Quartz from Qiaojia, Qiaojia Co., Zhaotong Prefecture, Yunnan Province, China [db_pics/mdpics/MD-209875b.jpg]](db_pics/mdpics/MD-209875b.jpg)
![Cinnabar, Dolomite, Quartz from Tongren Mine, Wanshan District, Tongren Prefecture, Guizhou Province, China [db_pics/mdpics/MD-209943a.jpg]](db_pics/mdpics/MD-209943a.jpg)
![Cinnabar, Dolomite, Quartz from Tongren Mine, Wanshan District, Tongren Prefecture, Guizhou Province, China [db_pics/mdpics/MD-209943b.jpg]](db_pics/mdpics/MD-209943b.jpg)
![Quartz, Quartz (Var: Amethyst) from Fengjiashan Mine (Daye Copper mine), Edong Mining District, Daye Co., Huangshi Prefecture, Hubei Province, China [db_pics/mdpics/MD-209951a.jpg]](db_pics/mdpics/MD-209951a.jpg)
![Brookite, Quartz from Taftan, Chagai District, Balochistan (Baluchistan), Pakistan [db_pics/mdpics/MD-209957a.jpg]](db_pics/mdpics/MD-209957a.jpg)