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Mineral Specimens with Quartz
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7.2 x 3.3 x 2.9 cm. An odd quartz specimen all-around! First, it is doubly-terminated, but not only that - the main crystal at one end has wrapped itself around (and terminated around) a quartz crystal of a weird tabular form. Secondly, the larger crystal has a sharp orange-red phantom inside, from an engulfed earlier-generation crystal that was coated with some mineral that demarcates its outline (probably hematite).
5.9 x 2.4 x 1.8 cm. This crystal features all of the unique things that African quartzes show. First, it is dramatically sceptred. Second, it shows both amethyst blushes and smoky tones, similar to Brandberg quartzes in appearance. Third, the top part of the sceptre shows interesting skeletal growth on one side. Fourth, there are inclusions of bright red little lepidocrocite crystals. And once I realized that this specimen had all of these things, I decided to look to see if there was an enclosed moving bubble (enhydro) that would cap it all off. After a few seconds of looking, I found an easily visible one! So, in one crystal, you have just about everything possible going on for an African quartz: amethyst, smoky, sceptering, lepidocrocite inclusions, an enhydro bubble, and skeletal growth.
This Photo was Mindat.org Photo of the Day - 24th Jul 2008
13.9 x 12.4 x 12.4 cm. A very large quartz crystal, with razor-sharp faces, glass-like surfaces and damage-free, measuring 8 cm across and 9 cm tall! It is surrounded by smaller crystals on a plate of massive quartz. Of the tons of quartz that comes out of Arkansas, a VERY small percentage is of this quality and aesthetics.
9.5 x 5.7 x 3.7 cm. This fine spike of quartz is out of the notable Hauck Collection. Surrounded by smaller crystals, the main crystal elegantly rises 9 cm to a perfect termination. Its faces are decorated with both "cut glass" modifications and a later generation of tiny, gemmy quartz crystals.
7.4 x 5.8 x 1.6 cm. Not from Pakistan - this is a very rare ARKANSAS faden quartz that can easily hold its own for quality with a Pakistani one! For one thing, the faden line running through the center is very clear and dramatic. The transparency is superb as well. And, the crystal is wonderfully complete, with just one small area of natural contact. You can clearly see the subcrystals growing in parallel, with the faden line running through their centers. Ex. Richard Hauck Quartz collection.
7.7 x 4.9 x 2.9 cm. An elongated compound crystal, consisting of tightly intergrown subcrystals, of lustrous, flashy sphalerite, running through the middle of a field of little starbursts of quartz crystals, from Dal’negorsk. A very aesthetic example of Dalnegorsk sphalerite, due to the beautiful setting.
13.3 x 6.5 x 4.8 cm. A STUNNING and DRAMATIC CABINET combination specimen from Paprok, Afghanistan. Two, parallel-growth, lustrous schorl crystals have striking, gemmy, indicolite-blue terminations! The schorls are beautifully and aesthetically accented by gemmy, water-clear, smoky quartz crystals and wrapped in snow-white albite. This is an outstanding, essentially pristine, complete all-around combo piece, with only minimal contacting at the base, on the back and out of sight from this famous locality.
3.0 x 1.7 x 1.5 cm. Gemmy and lustrous, emerald-green dioptase crystals to 1.1 cm are AESTHETICALLY set on a column of a drusy quartz-coated quartz crystal from the famous Reneville deposit in the Republic of Congo. This EXCELLENT combination of dioptase on quartz is RARE from this locality. Material of this quality dates to the 1950s or 60s. Ex. George Elling Collection.
11.2 x 8.3 x 7.1 cm. A Panasqueira combination specimen of a 9.0 cm, water-clear, very glassy quartz crystal majestically rising above a matrix of brilliant, sharp, silver-metallic arsenopyrite crystals and smaller quartz crystals.
5.4 x 4.7 x 3.5 cm. A gemmy and lustrous, 8 mm, pastel-yellow topaz crystal with a complex termination nicely set in a field of quartz needles on quartz-rich matrix from the famous Schneckenstein cliff of Saxony, Germany. A smaller topaz crystal is a nice accent. Circa 1800s.
6 x 5 x 3.5 cm. This specimen consists of a very sharp pseudo with a brilliantly sparkling coating of quartz druse that makes it glow. Ex. Sussman, Evan Jones, Chuck Leavitt Collections.
5 x 3.7 x 2.1 cm. A fine 3 cm anglesite crystal set on matrix with quartz. Ex. Willy Israel Collection.
5 x 3.4 x 1.9 cm. For all the great things from Tsumeb, quartz is rarely one of them. This specimen has etched quartz crystals to over one inch resting on a metallic matrix. There are also some tiny yellow crystals on the quartz, which, at this point are unknown as to composition and name. Ex. Willy Israel Collection.
4.7 x 3.9 x 2.9 cm. Sitting on a matrix of dolomite is a rare, for Tsumeb, cluster of clear terminated quartz crystals to one inch. Unusually good Tsumeb quartz! Ex. Willy Israel Collection.
4.2 x 1.9 x 1.9 cm. Very nice combination piece with lustrous acicular Chalcocite needles, iridescent equant Chalcocites, and long slender needles of Quartz. Ex. Willy Israel Collection.
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Rob Lavinsky, rob@irocks.com
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share specimen![Quartz from Nababeep mine, Okiep Copper District, Namaqualand, Northern Cape Province, South Africa [db_pics/mdpics/MD-173525a.jpg]](db_pics/mdpics/MD-173525a.jpg)
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