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Mineral Specimens with Quartz
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5.7 x 4.9 x 3.7 cm. This fine gem topaz specimen is very hard to shoot as it is colorless, and the large topaz is quite gemmy. The luster is glass-like. What is cool about this specimen is not just the gem 4.5 cm crystal, with textbook form, but also the four smaller topaz crystals that rise in parallel next to it, intergrown with quartz crystals.
11.9 x 3.3 x 2.5 cm. This is an old-timer Ouray quartz specimen, with elegant form - a compound crystal with sub-terminations tapering out all around it. It is in wonderful condition. It actually has just a hint of amethyst to it, particularly at the very tip, which is a little gemmy lavender sub-crystal.
5.3 x 4.0 x 3.2 cm. Sharp, intergrown, brown galena cubes to 2.8 cm, nicely accented by sparkly quartz, form a showy and excellent, two-sided specimen from the famous Blanchard Mine of New Mexico. The two, major galena cubes are pristine. Ex. Dave and Emily Stoudt Collection.
2.4 x 2.0 x 1.4 cm. A DRAMATIC spessartine garnet capped by a doubly terminated quartz crystal! The recent discovery of these highly etched but completely terminated spessartine garnets created quite a splash, and you can see why. The lustre and clarity are superb, which are complemented by the lovely wine-red color. The stepped patterns on this particular piece are amazing! This fine piece is beautifully and uniquely accented by the doubly terminated quartz crystal on top!
5.7 x 5.4 x 3.8 cm. A showy and excellent, old-time combination specimen from the famous Neudorf area of Germany. Lustrous, translucent, yellow-green siderite rhombs and sparkly, ruby-jack sphalerite crystals are nicely clustered on matrix covered with sharp, water-clear quartz crystals on massive, layered quartz and sphalerite matrix. Highly representative OLD material, as the mines closed in 1903.
10.5 x 9.2 x 5.3 cm. A VERY RICH, OLD-TIME and showy CABINET combination specimen from the famous Carn Brea Mine, Illogan, Cornwall. Lustrous microcrystals of wine-red cuprite and nests of sponge-like copper crystals dominate the crest of BOTH sides of the box-work, gray, sintered-like quartz matrix. This super, old and historic piece was mined in the 1840s-60s, according to the handwritten label accompanying the specimen. The Carn Brea Mine was formed in 1832 by the amalgamation of four older mines!
9.0 x 4.7 x 4.0 cm. A WEIRD and SHOWY Shangbao Mine specimen of hollow/empty, drusy quartz casted after calcite scalenohedrons and aesthetically draped on mountains and valleys of glassy, transparent, stepped-growth, emerald-green fluorite cubes on massive fluorite matrix. An unusual and very showy combination specimen from this famous locale.
5.5 x 5.3 x 2.9 cm. A visually impressive specimen that has to be among the most aesthetic semseyites I have seen: featuring a 2-cm-long spray of semseyite crystals perched, freestanding, at the apex of a cluster of quartz crystals. Ex. Martin Zinn Collection.
5.3 x 5.2 x 3.7 cm. A very sharp miniature featuring a cluster of sulfides about its center, lapping up against a gemmy quartz point. The arsenopyrite is on the left, the stannite on the right, in crystals to just over 1 cm. Ex. Martin Zinn Collection.
5.2 x 5.0 x 4.7 cm. A brilliantly lustrous ball of stepped stannite crystals, flanked by splaying GEM quartzes at its upper edge, makes this a really outstanding stannite specimen. Usually they are kind alumpy and although great for the species, not much to look at overall. THIS ONE is very aesthetic, though; as well as significant for the rare mineral displayed. The flanking quartzes and golden chalcopyrite to either side simply makes this piece more unique and special than the crowd. Ex. Dr. Steve Smale Collection.
8.2 x 5.5 x 3.2 cm. It is nothing special to see a tourmaline-included quartz crystal from Brazil, but this is a SWISS one, and therefore is a whole different animal! This crystal is shot through with sharp, slender black needle crystals of schorl tourmaline. The quartz is complete, with the back and bottom being natural contact faces. Ex. Hauck Collection.
13.9 x 6.8 x 4.9 cm. Quartz is mined by the ton in Arkansas, and this tends to make people a little jaded about specimens from there. But the really superb ones are not only uncommon, but can hold their own with quartz specimens from the great localities around the world. This is a big, fat crystal of incredible glassy clarity, razor-sharp and with no damage. These are hard to photograph, of course, and always look a lot less clear than they are in person. Suffice it to say you can read clearly through it with little distortion even though it is over 4 cm thick. There are some pretty, natural veils in the bottom of the crystal - which look just fuzzy in the photos but in person are beautiful floating "sheets". A large and superb quartz crystal!
5.5 x 4.2 x 2.9 cm. The photo shows very well how dramatic and aesthetic this Eastern European galena specimen is. The crystals have a fine shiny luster, and pretty corner bevels. Minor pyrite and quartz crystals add attractive accents.
7.5 x 2.4 x 2.3 cm. A very unusual and stunning amethyst crystal from Brandberg, very different from the norm. This doubly-terminated crystal, with subtle sceptering, has an incredibly intense purple color with overtones of scarlet.
6.9 x 2.6 x 2.4 cm. A bright, glassy Brandberg quartz with blushes of purple and smoky color that exemplify why these crystals are so unique and prized.
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Rob Lavinsky, rob@irocks.com
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share specimen![Topaz, Quartz from Dassu (Dasso; Dusso), Shigar Valley, Skardu District, Baltistan, Northern Areas, Pakistan [db_pics/mdpics/MD-168692a.jpg]](db_pics/mdpics/MD-168692a.jpg)
![Quartz from Ouray, Ouray District (Uncompahgre District), Ouray Co., Colorado, USA [db_pics/mdpics/MD-168696a.jpg]](db_pics/mdpics/MD-168696a.jpg)
![Galena, Quartz from Blanchard Mine (Portalas-Blanchard Mine), Bingham, Hansonburg District, Socorro Co., New Mexico, USA [db_pics/mdpics/MD-168745a.jpg]](db_pics/mdpics/MD-168745a.jpg)
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![Siderite, Sphalerite, Quartz from Neudorf, Harzgerode, Harz Mts, Saxony-Anhalt, Germany [db_pics/mdpics/MD-168756a.jpg]](db_pics/mdpics/MD-168756a.jpg)
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![Cuprite, Copper, Quartz from Carn Brea Mine (incl. Tregajorran Mine), Carn Brea and Tincroft United Mine, Carn Brea area, Camborne - Redruth - St Day District, Cornwall, England, UK [db_pics/mdpics/MD-168758b.jpg]](db_pics/mdpics/MD-168758b.jpg)
![Quartz, Fluorite from Shangbao Pyrite mine, Leiyang Co., Hengyang Prefecture, Hunan Province, China [db_pics/mdpics/MD-168830a.jpg]](db_pics/mdpics/MD-168830a.jpg)
![Semseyite, Quartz from Herja Mine (Kisbánya), Baia Mare (Nagybánya), Maramures Co., Romania [db_pics/mdpics/MD-168835a.jpg]](db_pics/mdpics/MD-168835a.jpg)
![Stannite, Arsenopyrite, Quartz from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-168836a.jpg]](db_pics/mdpics/MD-168836a.jpg)
![Stannite, Chalcopyrite, Quartz from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-168837a.jpg]](db_pics/mdpics/MD-168837a.jpg)
![Tourmaline, Quartz from Switzerland [db_pics/mdpics/MD-169702a.jpg]](db_pics/mdpics/MD-169702a.jpg)
![Quartz from Hot Springs, Garland Co., Arkansas, USA [db_pics/mdpics/MD-169703a.jpg]](db_pics/mdpics/MD-169703a.jpg)
![Galena, Quartz, Sphalerite from Krushev dol deposit, Krushev dol mine, Madan ore field, Rhodope Mts, Smolyan Oblast, Bulgaria [db_pics/mdpics/MD-169709a.jpg]](db_pics/mdpics/MD-169709a.jpg)
![Quartz (Var: Amethyst) from Brandberg area, Brandberg District, Erongo Region, Namibia [db_pics/mdpics/MD-169729a.jpg]](db_pics/mdpics/MD-169729a.jpg)
![Quartz (Var: Smoky Quartz), Quartz (Var: Amethyst) from Brandberg area, Brandberg District, Erongo Region, Namibia [db_pics/mdpics/MD-169730a.jpg]](db_pics/mdpics/MD-169730a.jpg)