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Mineral Specimens with Quartz
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7.5 x 6.4 x 4.4 cm. A fascinating AND pretty copper-mineral combo from Congo. On the side of a shallow pocket, on a layer of shiny smoky quartz crystals, is a cluster of superb dioptase crystals (the long one measures 1.8 cm) in the form of a cross. The isolation of this cluster makes it really jump out at you - MUCH more so than in the photos! Nearby are patches of rare shattuckite (Copper Silicate Hydroxide), with turquoise-blue color.
4.4 x 3.7 x 2.2 cm. A beautiful mini of red quartz on bladed hematite, with wonderful aesthetics. The gemmy quartz crystals get their coloring from inclusions of iron oxide.
4.9 x 4.4 x 2.9 cm. Lustrous crystals of ferberite. On the right is a cluster of super-gemmy quartz crystals and glittery arsenopyrite.
5.4 x 3.9 x 3.4 cm. The old Lawrence Conklin label that accompanies this specimen correctly identifies the form of this pyrite as the very rare "iron cross" - and there are TWO complete ones here having this form, one 1.5 cm and the other just under 1 centimeter. Both on matrix! And really aesthetic, with the crystals isolated on a bed of milky quartz crystals. Ex. Dave Stoudt Collection. VERY RARE material!
7.5 x 4.0 x 3.7 cm. An extremely showy and aesthetic Chinese specimen of a perfect, 2.2 cm, lustrous, hematite "iron rose" beautifully set at the base of two, glassy, water-clear quartz towers. The pristine quartz crystals are neatly accented by hematite flake inclusions. An excellent combination specimen.
6.3 x 4.3 x 2.2 cm. Brilliant, golden rutile needles aesthetically fill, in jackstraw fashion, a facet-like quartz crystal from Novo Horizonte, Brazil. The large rutile needle "star" is a striking feature. A showy specimen from this classic locality and essentially pristine.
8.3 x 3.2 x 2.0 cm. A stunning and aesthetic quartz specimen of a very gemmy, 3.0 cm, doubly terminated, smoky/amethyst scepter attached to the side of a larger, FLOATER, doubly terminated smoky/amethyst crystal. The scepter even has skeletal faces.
22.4 x 17.9 x 11.9 cm. A huge, rich specimen from the finds of 2 years ago that mix prismatic crystals of quartz with dense, olive-green crystals of epidote. The quartz crystals here range from clear to mineral-coated, up to 7 cm. This is a large, thin knob that was poking out into the pocket in which it formed, so it is crystallized all around; the contact is only along the bottom.
15.4 x 11.4 x 6.4 cm. This is an absolutely exquisite specimen of quartz, in addition to being just plain large and showy. The photos do not come close to capturing the stunning brilliance and glassy luster of these crystals. Inside are these bright red hematite-coated phantoms, AND inclusions of moss-green epidote crystals! Typically with this find, you saw quartz crystals interspersed with epidotes, or quartz crystals with phantoms, but not both inside the quartz crystals.
21.9 x 17.4 x 9.4 cm. Amidst a field of lustrous, bright purple amethyst crystals, a large, lone scalenohedron of silky calcite rises, to a height of 7 cm. The calcite is translucent, actually transparent in the center but with ornate stepped modifications on the faces that give it a silky appearance. A large, pretty and quite dramatic specimen.
10.5 x 5.3 x 3.2 cm. From the finds around two years ago - mossy-green crystals of epidote on crystals of amethyst. The specimens from this find took various forms. There were larger crystals of epidote on some; others had plain or hematite-included quartz rather than amethyst, etc. But I like how the epidotes on this specimen have almost the look of drusy pyromorphite from France or the Wheatley Mine, and their contrast with the purple amethyst.
4.8 x 4.0 x 3.2 cm. A REALLY unusual uvite specimen with a completely different appearance from the usual uvite/magnesite specimens from here. You have a lone, very lustrous wine-red uvite crystal and running right up to it is a field of drusy chalcedony that has actually covered up some other uvite crystals. Ex. Jactat Collection.
9.5 x 5.9 x 5.5 cm. Socorro County is known mostly for the Blanchard Mine and its fine fluorites, galenas and linarites - but check out this find of dramatically sceptered AMETHYST crystals on a matrix of massive quartz, from the Cascabel Mine! Dave Stoudt picked this piece up at the Socorro Symposium in 2003.
8.5 x 4.3 x 3.9 cm. An extremely aesthetic and elegant specimen from Mexico, featuring a pristine, snow-white crystal of calcite measuring 7.5 cm, associated with a cluster of prismatic amethyst crystals intergrown with a second calcite crystal with stepped faces. The amethyst gives a pleasing color accent to the specimen.
6.9 x 5.4 x 3.9 cm. A cluster of Las Vigas amethyst with all the qualities that make it amongst the most prized of the world amethysts: unique purple "blush", slender elegant crystals, and silky striated luster. There is no matrix here - it is all crystal and angled in all directions quite aesthetically.
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Rob Lavinsky, rob@irocks.com
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share specimen![Dioptase, Shattuckite, Quartz from Sanda Mine, Mindouli, Pool Region, Republic of Congo (Brazzaville) [db_pics/mdpics/MD-165719a.jpg]](db_pics/mdpics/MD-165719a.jpg)
![Dioptase, Shattuckite, Quartz from Sanda Mine, Mindouli, Pool Region, Republic of Congo (Brazzaville) [db_pics/mdpics/MD-165719b.jpg]](db_pics/mdpics/MD-165719b.jpg)
![Quartz, Hematite from Jinlong hill, Lungchuan (Longchuan) Co., Heyuan Prefecture, Guangdong Province, China [db_pics/mdpics/MD-165732a.jpg]](db_pics/mdpics/MD-165732a.jpg)
![Ferberite, Quartz from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-165736a.jpg]](db_pics/mdpics/MD-165736a.jpg)
![Pyrite, Quartz from Cananea, Mun. de Cananea, Sonora, Mexico [db_pics/mdpics/MD-165748a.jpg]](db_pics/mdpics/MD-165748a.jpg)
![Pyrite, Quartz from Cananea, Mun. de Cananea, Sonora, Mexico [db_pics/mdpics/MD-165748b.jpg]](db_pics/mdpics/MD-165748b.jpg)
![Hematite, Quartz from Jinlong hill, Lungchuan (Longchuan) Co., Heyuan Prefecture, Guangdong Province, China [db_pics/mdpics/MD-165793a.jpg]](db_pics/mdpics/MD-165793a.jpg)
![Quartz (Var: Rutilated Quartz) from Novo Horizonte, Bahia, Northeast Region, Brazil [db_pics/mdpics/MD-165813a.jpg]](db_pics/mdpics/MD-165813a.jpg)
![Quartz (Var: Smoky Quartz), Quartz (Var: Amethyst) from Goboboseb Mountains, Brandberg area, Brandberg District, Erongo Region, Namibia [db_pics/mdpics/MD-165821a.jpg]](db_pics/mdpics/MD-165821a.jpg)
![Epidote, Quartz from Xichang Mine, Xichang Co., Liangshan Autonomous Prefecture, Sichuan Province, China [db_pics/mdpics/MD-165824a.jpg]](db_pics/mdpics/MD-165824a.jpg)
![Quartz, Epidote from Xichang Mine, Xichang Co., Liangshan Autonomous Prefecture, Sichuan Province, China [db_pics/mdpics/MD-165827a.jpg]](db_pics/mdpics/MD-165827a.jpg)
![Calcite, Quartz (Var: Amethyst) from IraÃ, Alto Uruguai region, Rio Grande do Sul, South Region, Brazil [db_pics/mdpics/MD-165830a.jpg]](db_pics/mdpics/MD-165830a.jpg)
![Epidote, Quartz (Var: Amethyst) from Hongquizhen Quarry, Meigu Co., Liangshan Autonomous Prefecture, Sichuan Province, China [db_pics/mdpics/MD-166610a.jpg]](db_pics/mdpics/MD-166610a.jpg)
![Uvite, Quartz (Var: Chalcedony) from Serra das Éguas, Brumado (Bom Jesus dos Meiras), Bahia, Northeast Region, Brazil [db_pics/mdpics/MD-166617a.jpg]](db_pics/mdpics/MD-166617a.jpg)
![Uvite, Quartz (Var: Chalcedony) from Serra das Éguas, Brumado (Bom Jesus dos Meiras), Bahia, Northeast Region, Brazil [db_pics/mdpics/MD-166617b.jpg]](db_pics/mdpics/MD-166617b.jpg)
![Quartz (Var: Amethyst) from Cascabel mine, Ladron District, Socorro Co., New Mexico, USA [db_pics/mdpics/MD-166624a.jpg]](db_pics/mdpics/MD-166624a.jpg)
![Calcite, Quartz (Var: Amethyst) from Valenciana Mine, Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico [db_pics/mdpics/MD-166625a.jpg]](db_pics/mdpics/MD-166625a.jpg)
![Quartz (Var: Amethyst) from Mun. Las Vigas de RamÃrez (Mun. de Profesor Rafael RamÃrez), Veracruz, Mexico [db_pics/mdpics/MD-166749a.jpg]](db_pics/mdpics/MD-166749a.jpg)