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Mineral Specimens with Quartz
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7.4 x 5.4 x 3.0 cm. A fine amethyst from the Valenciana Mine with a much different appearance. Here, the lavender color is suffused through the crystals. The association here is calcite. Ex. Mullane Collection.
8.4 x 7.4 x 4.0 cm. This is a more "classic" Alpine association specimen, from the Austrian Alps: glassy-transparent quartz crystals richly included with mossy green chlorite. Ex. Wein Collection.
5.3 x 4.4 x 1.4 cm. This is an example of faden quartz, with the fuzzy line called a faden clearly visible running across the center of the crystals. The cluster is complete, with matrix attachment only along one side and no damage. Ex. Wein Collection.
7.4 x 5.0 x 3.9 cm. This is a cluster of doubly-terminated crystals, milky to transparent, from the Austrian Alps. Ex. Wein Collection.
12.8 x 10.8 x 8.9 cm. A large, aesthetic Indian specimen that has been carefully trimmed out to feature right in its center a spray of lustrous crystals of apophyllite (the spray measures around 5.5 cm in each direction). Also left intact below is a little "shelf" with a cluster of very peach cluster of stilbite crystals. The snowy quartz creates a striking background.
3.6 x 1.8 x 1.1 cm. A fine thumbnail specimen of a Brumado classic: a razor-sharp rhomb of deep green uvite, here embedded deeply in a clear crystal of quartz. There is a smaller uvite below it, and you can see small rhombs of magnesite, a classic association from here.
11.4 x 8.3 x 4.8 cm. This amethyst specimen is a bit different in that there are both little gemmy crystals and snowy puffballs of calcite decorating the surface of the amethyst. Ex. Mullane Collection.
9 x 7.5 x 7 cm. While this is not the most desirable specimen in terms of sharp, euhedral crystals being in evidence, the crystals are large and a rich specimen overall. Ex. Consie Prince Collection.
9.1 x 5.8 x 4.0 cm. A large, frosted quartz crystal is capped by a bloom of pastel pink rose quartz. What is really interesting about this specimen is that the rose quartz is not just plopped atop the crystal; the two are actually merged crystallographically. There is an epitaxial extension of the quartz crystal that begins colorless, then continues up and merges into pink as it rises. Ex. Richard Hauck Collection.
6.9 x 6.2 x 5.4 cm. This is an older Brazilian specimen that came out of the ground and went straight into the collection of Charles Leavitt of Arizona, probably in the 1970s. It is a spectacular multi-generational quartz specimen where underlying rose quartz has served as a base for the growth of dozens of sharp, doubly-terminated, "beta-style" smoky crystals. It is really unusual to see rare rose quartz and smoky quartz paired. Accompanied by a previous Kristalle label and was sold to Richard Hauck many years ago. Ex. Richard Hauck Collection.
7.4 x 5.4 x 4.1 cm. Despite the fact that these are contemporary, these specimens from Lechang somehow have a "classic" look to them. What you have are these wonderfully slender and elegant, transparent prisms of quartz rising from books of thin, bladed hematite crystals. On this specimen, two tightly intergrown quartzes sit on their own "shelf" overlooking the rest of the specimen.
7.0 x 5.4 x 4.5 cm. Most of what you see from Brandberg are the pretty single crystals, but once in awhile you see a matrix specimen such as this. Here is a cluster of a half-dozen razor-sharp crystals, on a matrix of colorless quartz. The crystals have a gorgeous blend of smoky and amethystine colors, which you find in the most desirable Brandberg specimens. These are the truncated "beta-style" (if not technically betas) crystals, some of them around the edges showing both terminations.
11.9 x 9.9 x 9.8 cm. An exceptional and very rare cabinet pseudomorph specimen from the well-known Julcani Mine of Peru. Sparkly milky quartz crystals with transparent tips have pseudomorphed a striking parallel-growth cluster of large, sharp, tabular baryte crystals. The largest pseudomorph is about 7.0 cm. This piece is essentially pristine. Specimens of this quality date to the 1970s or early 80s. Ex. Richard Hauck Quartz Collection.
17.5 x 14.5 x 5.9 cm. This is a very large natural geode: natural reef coral, with a hollow interior, that has been pseudomorphed inside by gorgeous orangey chalcedony. This is not only a really interesting specimen, but quite beautiful - and you have both halves of this natural "geode", symmetrically side-by-side.
18.9 x 17.8 x 8.1 cm. This is half of a large amethyst geode of the form commonly called a "cathedral". It stands out above the usual one of these due to the intense color, gem-like clarity and glassy luster of the crystals inside - more like Bolivian amethyst than Brazilian.
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Rob Lavinsky, rob@irocks.com
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share specimen![Quartz (Var: Amethyst), Calcite from Valenciana Mine, Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico [db_pics/mdpics/MD-210692a.jpg]](db_pics/mdpics/MD-210692a.jpg)
![Quartz, Chlorite Group from Grieswies-Mähder, Grieswies, Grieswies - Krumlkeeskopf Mt. area, Hüttwinkl valley, Rauris valley, Hohe Tauern Mts, Salzburg, Austria [db_pics/mdpics/MD-210693a.jpg]](db_pics/mdpics/MD-210693a.jpg)
![Quartz from Grieswies-Mähder, Grieswies, Grieswies - Krumlkeeskopf Mt. area, Hüttwinkl valley, Rauris valley, Hohe Tauern Mts, Salzburg, Austria [db_pics/mdpics/MD-210694a.jpg]](db_pics/mdpics/MD-210694a.jpg)
![Quartz from Kristallspitze Mt., Irschen, Oberdrauburg, Kreuzeck group, Carinthia, Austria [db_pics/mdpics/MD-210695a.jpg]](db_pics/mdpics/MD-210695a.jpg)
![Apophyllite-(KF), Stilbite-Ca, Quartz from Jalgaon District, Maharashtra, India [db_pics/mdpics/MD-210696a.jpg]](db_pics/mdpics/MD-210696a.jpg)
![Uvite, Quartz, Magnesite from Serra das Éguas, Brumado (Bom Jesus dos Meiras), Bahia, Northeast Region, Brazil [db_pics/mdpics/MD-210700a.jpg]](db_pics/mdpics/MD-210700a.jpg)
![Calcite, Quartz (Var: Amethyst) from La Sirena Mine, Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico [db_pics/mdpics/MD-210704a.jpg]](db_pics/mdpics/MD-210704a.jpg)
![Quartz, Rhodochrosite from Sunnyside Mine (American Tunnel; Mogul Mine; Washington Mine; Belle Creole; Gold Prince; Brenneman Mine; Sunnyside Mine Group), Howardsville, Silverton District, San Juan Co., Colo [db_pics/mdpics/MD-210705a.jpg]](db_pics/mdpics/MD-210705a.jpg)
![Quartz (Var: Rose Quartz), Quartz from Pitorra claim, Laranjeiras, Galiléia, Doce valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-210709a.jpg]](db_pics/mdpics/MD-210709a.jpg)
![Quartz (Var: Rose Quartz), Quartz (Var: Smoky Quartz) from Barra de Salinas district, Barra de Salinas, Coronel Murta, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-210712a.jpg]](db_pics/mdpics/MD-210712a.jpg)
![Quartz, Hematite from Lechang Mine, Lechang Co., Shaoguan Prefecture, Guangdong Province, China [db_pics/mdpics/MD-210755a.jpg]](db_pics/mdpics/MD-210755a.jpg)
![Quartz (Var: Amethyst), Quartz (Var: Smoky Quartz) from Brandberg area, Brandberg District, Erongo Region, Namibia [db_pics/mdpics/MD-210756a.jpg]](db_pics/mdpics/MD-210756a.jpg)
![Quartz, Baryte from Julcani Mine, Julcani District, Angaraes Province, Huancavelica Department, Peru [db_pics/mdpics/MD-210757a.jpg]](db_pics/mdpics/MD-210757a.jpg)
![Quartz (Var: Chalcedony) from Tampa Bay, Tampa, Hillsborough Co., Florida, USA [db_pics/mdpics/MD-210759a.jpg]](db_pics/mdpics/MD-210759a.jpg)
![Quartz (Var: Amethyst) from Rio Grande do Sul, South Region, Brazil [db_pics/mdpics/MD-210763a.jpg]](db_pics/mdpics/MD-210763a.jpg)
![Quartz (Var: Amethyst) from Rio Grande do Sul, South Region, Brazil [db_pics/mdpics/MD-210763b.jpg]](db_pics/mdpics/MD-210763b.jpg)