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Mineral Specimens with Quartz
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A very showy and CLASSIC Butte, Montana CABINET specimen of lustrous, brassy pyritohedrons to 1.6 cm with scattered transparent needle quartz crystals. Absolutely minimal damage to a specimen of this size, with a few broken quartz crystals. Old Butte material and specimens of this size and quality are hard to come by. Old dealer stock of Dr. Gary Hansen and not shown since the early 1980s! 12.7 x 8.2 x 6.7 cm
A VERY DRAMATIC and SHOWY specimen. A lustrous, 4.0 cm long amethystine quartz crystal rises centrally above a beautiful 2.5 cm quartz pseudomorph after fluorite crystal. Some of the smaller, lustrous amethystine quartz crystals on the matrix are iron stained. Quartz after fluorite pseudos are rare. Very trivial edge wear on the large crystal tip. 8.5 x 8.0 x 4.0 cm
MD-271561 - Hematite, Siderite, Quartz (Var: Smoky Quartz), Microcline - - Archived
R. A. Kosnar claim, Yucca Hill, Steven's Ranch, Lake George, Park Co., Colorado, USA
small cabinet, 6.2 x 3.7 x 3.6 cm.
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6.2 x 3.7 x 3.6 cm. This association is rather uncommon in the mineral world, and you just don't see such fine specimens from this area. The pegmatites near the Lake George area of Colorado have produced what most collectors and dealers consider to be the finest Amazonite specimens from the standpoint of superb color, top quality, wonderful display specimens and excellent associations. This particular specimen, has no Amazonite, but it is a fine piece featuring sharp metallic grey pseudomorphs of Hematite after Siderite (largest measures 1.0 cm) aesthetically perched along the prism faces of translucent, sharp, deep colored Smoky Quartz crystals on minor associated pink and white Microcline. This specimen was collected over 30 years ago (Summer of 1977) when Richard Kosnar found some of the finest color Amazonite from Colorado extant. Ex. Richard Kosnar Collection.
5.5 x 4.3 x 2.7 cm. Several light colored Smoky Quartz crystals on a matrix of intergrown of pink/white Orthoclase and Albite crystals from the famous locality at Baveno. This area lends its name to "Baveno" twinned Feldspar crystals, and is one of the most well known Feldspar localities in the world. The largest Orthoclase crystal measures 1.5 cm across.
6.4 x 3.8 x 3.4 cm. Daniel Trinchillo Sr. had a special attraction to quartz specimens. His collection contained many and this is certainly a very fine example from a much less common Swiss locality - Windegghorn Mountain in Bern. This striking, gem-like, water-clear, pretty, light smoky quartz crystal is water-clear, sharp, and has very interesting stepped-growth faces. Complete-all-around. The gem-like quality of the crystal made photography difficult.
5.0 x 4.5 x 4.5 cm. A very aesthetic, dense cluster of very glassy, transparent, pretty purple amethyst crystals from recent finds at Las Vigas, Mexico. This complete-all-around specimen is nearly pristine. The crystals rest on a very thin crust of quartz.
10.5 x 8.8 x 3.8 cm. Discrete, translucent, "Blanchard-blue" to purple fluorite cubes are aesthetically scattered on the quartz matrix of this fine cabinet specimen from the Blanchard Mine of New Mexico. The striking, dominating cube is 3.0 cm and the cubes have nice purple edges. This is uncommonly fine Blanchard material, as most fluorite specimens are intergrown clusters of crystals. Contemporary classic material.
9.4 x 8.4 x 6.2 cm. Amethyst specimens from the Royal Scepter Mine of New Mexico are very rare and are very rarely available. Two clusters of glassy, flattened, parallel-growth, pretty, light purple amethyst crystals are aesthetically set in a dramatic, large vug. The striking, cityscape-like cluster is 4.3 x 3.0 x 2.0 cm. We have never seen a specimen from this locale before. Older material from the Richard Hauck Quartz Collection.
3.3 x 3.3 x 1.4 cm. Three pristine, glassy, transparent amethyst crystals with pretty purple color form an aesthetic trident crystal cluster from recent finds at Las Vigas, Mexico. Very nice, highly representative material for the species and well-known locale.
7.6 x 5.2 x 4.4 cm. A striking doubly terminated amethyst/smoky quartz crystal from recent finds in the Goboboseb Mountains. This dramatic piece is very glassy and totally water-clear. The impressive skeletal features, shading variations of the amethyst and smoky colors and clay inclusions are highly noteworthy. Every turn of this sharp crystal presents an entirely different perspective of the outside and interior of this stunning crystal. Complete-all-around and nearly pristine.
8.0 x 4.3 x 4.2 cm. Lustrous, light brown, flattened siderite rhombs with contrasting glassy quartz crystals cover the blocky matrix of massive siderite with quartz on this excellent old-time specimen from the Germany’s Georg Mine, Rhineland-Palatinate. Ex. J. Cilen and Robert Whitmore Collections.
5.3 x 4.7 x 3.6 cm. We have never seen botryoidal lavender quartz from any worldwide locality and believe it to be unique. This small find is from the more recently opened N’Chwaning III Mine. The very fine mounded cluster consists of lustrous, translucent, pleasing lavender quartz balls and is beautifully accented with snow-white calcite. Complete-all-around and nearly pristine. This is from a brand new find. The color is probably due to manganese, but they have not been analyzed to date.
7.2 x 5.0 x 3.9 cm. A fine mounded combination specimen from recent finds at a pegmatite in the foothills of the Andes of Argentina. Glassy, transparent smoky quartz crystals to 1.6 cm are nicely scattered amongst sharp, pastel-pink microcline crystals, some of which are Carlsbad twins. Tiny, colorless albite crystals are epitaxial on the microcline crystals. Limonite coats part of the backside of the mound. Highly representative combination material from this locale.
10.8 x 7.8 x 3.4 cm. Gemmy and lustrous, burnt orange spessartine garnets to 5 mm richly cover the mounded cabinet-sized feldspar matrix on this fine specimen from recent finds at Tongbei, China. The 5.0 cm, lustrous, translucent, partially garnet-coated smoky quartz crystal is a fine accent. Highly representative combination material from this noted locale.
8.4 x 2.8 x 2.2 cm. A striking doubly terminated amethyst/smoky quartz crystal from recent finds in the famous Goboboseb Mountains. This dramatic piece is very glassy and nearly totally water-clear. The highly unusual amethyst/smoky color zoning complimented by the colorless terminations makes this a very distinctive specimen. There appears to be a distinct line, where the smoky color just stops. Complete- all-around.
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Rob Lavinsky, rob@irocks.com
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