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Mineral Specimens with Quartz
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15.8 x 10.4 x 8.3 cm. Kavalerovo is a small mine north of Dal’negorsk. Ed David specialized in Russian minerals and long enjoyed owning this important locality fluorite specimen. Here you have 1.4 kilograms of quartz matrix, crystallized no less, with three superb, translucent, complex fluorite crystals to 4.5 cm sitting in a row. Ex. Edward E. David Collection.
8.4 x 5.9 x 4.8 cm. This is a superb, 7-cm-long glowing green spear of tourmaline, impaling a thick milky quartz crystal. The tourmaline diverges into multiple cityscape terminations after emerging through the quartz, and the effect is quite a geometric contrast to the simple prism on the quartz termination. The multiple terminations of the tourmaline, exposed and subject to easy break, are in fact pristine and undamaged, and complete all around. Weighs 233 grams.
9.5 x 4.5 x 4.0 cm. An attractive very light green color cast of Quartz crystals after an unknown mineral (perhaps Calcite?). It appears that the light green color is caused by a micro inclusion of Malachite. Ex. Rob Smith Collection.
A good and somewhat showy specimen of this rare calcium sulphate carbonate , with eye-visible white crystals on contrasting matrix. Large and rich specimen, I am told! 10 x 6 x 3 cm
The pics say it all! What a cute, matched set! 3.5 x 2.5 x 1.5 cm
7.5 x 7.0 x 4.5 cm. A stunning, incredibly aesthetic combination specimen from Pakistan. A glassy, transparent, 4.0 cm smoky quartz crystal is centrally placed and beautifully set in front of a blocky, lustrous, pearlescent, 3.7 cm microcline crystal. The snow-white albite crystal matrix is fantastically studded with a plethora of lustrous, jet-black schorl crystals. Smoky quartz, in this combination, is uncommon from the Shigar Valley. Ex. Wayne Thompson.
3.6 x 2.3 x 2.2 cm. A rare, fine, doubly terminated amethyst crystal from the Boulder Batholith of Jefferson County, Montana. This glassy and lustrous, old-time specimen has a beautiful, intense purple termination, is very interestingly shaped and has several skeletal faces. Clay inclusions add a further accent to this uncommon amethyst. Ex. Richard Hauck Collection.
6.5 x 1.9 x 1.2 cm. The famous quartz crystals from Denny Mountain, Washington are highly desirable, difficult to obtain and very dangerous to collect. Several people have lost their lives collecting there, over the years. A gorgeous, complete all-around and pristine, amethyst scepter, such as this, is supremely desirable. A very glassy, transparent, 2.2 cm, amethyst crystal is beautifully sceptered atop a lustrous, translucent, sharply, quartz crystal stalk. One of the 6 amethyst termination faces is skeletal. Ex. Richard Hauck Collection.
5.4 x 2.4 x 1.6 cm. A gorgeous, aesthetic and pristine cluster of absolutely water-clear, gem-like, light purple amethyst crystals lovingly attached to a bit of quartz from recent finds at Cerro de la Concordia, Piedra Parada (Las Vigas), Mexico. The two, large, parallel-growth crystals are doubly terminated. Classic and beautiful Las Vigas material.
4.2 x 3.1 x 2.0 cm. A classic, old-time and aesthetic cluster of blocky, lustrous, pastel rose-pink rhodochrosite rhombs beautifully accented by two, small sprays of needle quartz crystals from the East Colusa Mine at Butte. Certainly, one of the most desirable mineral species from this famous district and this is a fine, highly representative specimen of the species and locale. The rhombs are nicely translucent. Ex. Jamie Bird Collection, a California collector from the 1960s-1980s.
5.0 x 4.6 x 4.0 cm. A fine combination specimen that includes the very rare species, londonite, the cesium-dominant analogue of rhodizite. A large, gemmy and lustrous, 3.0 x 2.8 cm, sharp londonite crystal with pleasing pastel-yellow color dominates a quartz-rich pegmatite vein that includes lustrous, cranberry-red liddicoatite crystals (second photo). It is uncommon to see both londonite and liddicoatite in such richness together in a specimen. The large londonite crystal is pristine, which is uncommon in itself.
2.6 x 2.4 x 0.8 cm. Fuchsite is actually a rare bright to dark green variety of the common mineral muscovite. In these rare quartz crystals from Pakistan, it takes the form of bright, light green inclusions inside a tabular crystal of quartz. Unusual material from, so far as I know, a single pocket. Over the years I have seen perhaps less than 10 specimens from this pocket found in 1993, which produced strange quartzes of an unearthly green color. They initially were labeled everything from Chrysoprase crystals to Quartz included by dye. It turns out, so far as I know now, that the color is due to dispersed microscopic inclusions of fuchsite, a green mica species. This particular crystal is a superb thumbnail and a floater, complete all around.
6.8 x 6.8 x 2.4 cm. This beautiful combination came from a pocket that was opened in July of 1982 at the Little Three. The small number of specimens of course long ago disappeared into collections, so you rarely see them anymore. At any rate - what you have is smoky quartz crystals with large, thick "books" of pseudo-hexagonal muscovite, on a matrix of spongy microcline. Ex. Jaime Bird Collection.
4.4 x 2.1 x 1.8 cm. An interesting and unique combination specimen from Peru. First you have these very sharp, slender, terminated crystals of hubnerite, classic from here. They rise from a cluster of elegant quartz crystals, also in fine shape. And decorating the specimen are little pale green translucent fluorites. Ex. Jaime Bird Collection.
10.2 x 3.8 x 3.8 cm. This is not what you might expect in a Uruguay piece by quickly looking at it (an amethyst stalactite with solid quartz center). It is not a stalactite at all, in fact. It is hexagonal. The reason why...This is much more rare: it is hollow in the center - a crust that wrapped itself around a very sharply hexagonal crystal of calcite (if you look underneath, you can see this perfectly hexagonal hollow inside. The outside of this ectomorph, however, smoothed out the faces, so that is now appears perfectly rounded from the outside. The calcite was completely etched away by corrosive solutions in the pocket, leaving this amethyst "glove". Ex. Jaime Bird Collection.
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Rob Lavinsky, rob@irocks.com
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share specimen![Fluorite, Quartz from Kavalerovo Mining District, Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Primorskiy Kray, Far-Eastern Region, Russia [db_pics/mdpics/MD-216623a.jpg]](db_pics/mdpics/MD-216623a.jpg)
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![Quartz (Var: Amethyst) from Denny Mountain, King Co., Washington, USA [db_pics/mdpics/MD-217431a.jpg]](db_pics/mdpics/MD-217431a.jpg)
![Quartz (Var: Amethyst) from Denny Mountain, King Co., Washington, USA [db_pics/mdpics/MD-217431b.jpg]](db_pics/mdpics/MD-217431b.jpg)
![Quartz (Var: Amethyst) from Cerro De La Concordia, Piedra Parada (Piedras Parado), Mun. de Tatatila, Veracruz, Mexico [db_pics/mdpics/MD-217433a.jpg]](db_pics/mdpics/MD-217433a.jpg)
![Rhodochrosite, Quartz from East Colusa Mine, Butte, Butte District, Silver Bow Co., Montana, USA [db_pics/mdpics/MD-217434a.jpg]](db_pics/mdpics/MD-217434a.jpg)
![Londonite, Liddicoatite, Quartz from Antsongombato gem mine, FKT Antsentsindrano, Andrembesoa Commune, Betafo District, Vakinankaratra Region, Antananarivo Province, Madagascar [db_pics/mdpics/MD-217444a.jpg]](db_pics/mdpics/MD-217444a.jpg)
![Londonite, Liddicoatite, Quartz from Antsongombato gem mine, FKT Antsentsindrano, Andrembesoa Commune, Betafo District, Vakinankaratra Region, Antananarivo Province, Madagascar [db_pics/mdpics/MD-217444b.jpg]](db_pics/mdpics/MD-217444b.jpg)
![Muscovite (Var: Fuchsite), Quartz from Chaprot valley, Chalt, Gilgit District, Northern Areas, Pakistan [db_pics/mdpics/MD-217487a.jpg]](db_pics/mdpics/MD-217487a.jpg)
![Quartz (Var: Smoky Quartz), Muscovite, Microcline from Little Three Mine (Little 3), Ramona District, San Diego Co., California, USA [db_pics/mdpics/MD-217497a.jpg]](db_pics/mdpics/MD-217497a.jpg)
![Hübnerite, Fluorite, Quartz from Huayllapon Mine, Pasto Bueno District, Pallasca Province, Ancash Department, Peru [db_pics/mdpics/MD-217513a.jpg]](db_pics/mdpics/MD-217513a.jpg)
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