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Mineral Specimens with Quartz
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3.7 x 2.7 x 2.5 cm. A remarkable locality piece consisting of a single complex crystal, embedded in quartz. The crystal is 8mm tall, and quite robust. It is sharpest on one face, compared to the others, but it is clearly a squashed octahedral crystal and not a mass or nugget style. Ex. Philadelphia Academy of Sciences Collection.
9.2 x 4.9 x 2.5 cm. Razor-sharp, translucent octahedrons of fluorite, a beautiful sea-foam green with hints of purple inside – associated with prisms of quartz covered with a snowy second generation of micro quartz.
4.3 x 3.9 x 1.1 cm, 4.3 x 3.4 x 2.1 cm, 3.6 x 2.9 x 2.2 cm. A set of three fine miniatures, each very different from the others, from the Vera Cruz amethyst locality. One features a single, thick crystal with a little one sticking out from its side. Another is an elegant "V" of two crystals. And the third is a dramatically sceptered crystal accented by smaller ones.
7.9 x 4.9 x 4.4 cm. From the collection of J.R. Glover, a fascinating large quartz crystal from Brazil. For starters, this crystal is as sharp and clear as glass, and in fantastic condition - providing a clear window to the beautiful "scene" inside: a series of stacked phantoms, demarcated by successive coatings of clay (montmorillonite) and green chlorite.
5.4 x 5.4 x 4.8 cm. A gorgeous cluster of amethyst where the larger crystals are sceptered, with glowing gemmy tips, rising above a blanket of sparkly smaller crystals. The crystals have a beautiful arrangement to them. Ex. Richard Hauck Collection.
7.1 x 2.1 x 1.8 cm. This is a complex compound crystal of slightly smoky quartz, of unusual quality and transparency for these finds, providing a perfect setting for the jewel-like orangey-red spessartines climbing up its sides. Note the interesting triple-termination on top.
6.3 x 5.8 x 4.8 cm. This is an old-time Connecticut amethyst, out of the Richard Hauck collection, and the Massachusetts collection of Kenneth Holt prior to that. These amethysts have an extremely distinctive look to them - a suffused pastel light purple that makes them instantly recognizable.
8.1 x 3.4 x 2.9 cm. This is an older piece that came out of the Wein Collection. This is a doubly-terminated, floater crystal of quartz, with glassy luster - complete all around and un-contacted. The faces are smooth and clean: the reflections you see are from natural internal fractures. Unusual for the locality, this is Herkimer-style. Ex. Wein and Richard Hauck Quartz Collections.
5.4 x 4.8 x 2.9 cm. What has happened here is that quartz has replaced the original andradite garnet crystals, retaining the sharp form of the andradites. So, what you are left with is a specimen of quartz in the form of garnet. Pseudomorphs of various sorts are not rare, of course, but in this case, the completeness of the pseudomorphing and the widely different crystal forms of quartz and garnet make this one most interesting. Ex. John Seibel.
6.5 x 5.7 x 2.8 cm. A fine, sculptural specimen of two, distinctive, separate vugs in quartz richly lined with sparkly, blue-green spangolite microcrystals from the well-known Mex-Tex Mine of Bingham, New Mexico. The vertical septae separating the two vugs is spectacular and the golden-yellow, iron oxide-coated quartz crystals are a superb accent to the blue-green spangolite. The Mex-Tex is adajcent to the famous Blanchard Mine.
5.0 x 1.9 x 1.6 cm. A classic and beautiful Denny Mountain amethyst scepter. Each termination face on the glassy, transparent scepter has distinctively different skeletal features. Probably collected in the 1970s or 80s. Ex. Richard Hauck Collection.
11.6 x 8.5 x 2.9 cm. A fine cabinet plate of water-clear, glassy needle quartz crystals nicely accented with a scattering of lustrous, lightly iridescent, brassy chalcopyrite plates and milky calcite scalenohedrons from the famous Campbell Shaft at Bisbee. Ex. Smith (Rocksmiths) and Dave Stoudt Collections. According to Dave Stoudt’s catalogue, he bought this piece from the Smiths in 1989.
7.3 x 5.1 x 3.9 cm. An old-time, very rich and showy garnet specimen from the historic Schwarzenberg District of the western Erzgebirge. Gemmy and lustrous, sharp, chocolate-brown to golden-amber, individual to compound garnet crystals saturate all sides of the quartz matrix. The largest crystal is 7 mm. From an older museum collection dating to prior to WW I.
5.5 x 5.5 x 2 cm. This is an exquisite “fan” of translucent, tightly-intergrown rose quartz crystals that has grown on a crystal of colorless quartz. The rose quartz rises about 3 cm to its ridge of terminations. The crystals have a fine luster. An old specimen from the famous 1960s finds at this island in the middle of a river, noticeably classic for the find due to the matrix arrangement and overall "look". Ex. Kirby Siber collection (Switzerland).
10.5 x 8 x 5.3 cm. A fine ferberite for this important Korean locale. The piece features a large, 7.5-cm ferberite crystal locked inside gemmy, translucent quartz crystals. Its termination, in fact, extends right up into the crystal on the left side. Ex. Rolf Wein Collection.
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Rob Lavinsky, rob@irocks.com
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