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Mineral Specimens with Quartz
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6.4 x 4.3 x 3.4 cm. A very sharp crystal of Alpine quartz with a coating of green chlorite, a common association for Alpine quartzes. The crystal sits very attractively on the carefully trimmed matrix. It is in pristine condition. From Val Couvrein. Ex. Jaime Bird Collection.
4.8 x 2.8 x 2.8 cm. From Concepcion del Oro, Zacatecas, Mexico, this a specimen of very sharp crystals of chalcopyrite amongst starkly contrasting, translucent quartz crystals. There is a bit of damage to some of the chalcopyrites as with most of these. From the 1960s-early 1970s. Ex. Jaime Bird Collection.
6.4 x 5.4 x 2.4 cm. A matrix-free cluster of sharply-zoned crystals of amethyst from Guerrero, with purple blush cores and colorless terminations. Ex. Jaime Bird Collection.
2.2 x 1.3 x 1.3 cm. An elegant thumbnail of hubnerite from the premier locality for the species, consisting of a doubly-terminated crystal crossing a smaller hubnerite and some quartzes. Ex. Jaime Bird Collection.
3.4 x 2.0 x 0.4 cm. This gold specimen is from the little-known 16 to 1 Mine in California, which has been producing gold for over 100 years. (A website covering this interesting mine is at this URL: http://www.origsix.com). This specimen is a lacework of bright gold in stark white quartz. Ex. Jaime Bird Collection.
20.5 x 12.9 x 11.4 cm. A cluster of very large crystals of the intensely glassy and deep purple amethyst that makes Artigas amethyst among the best in the world. The largest crystal here measures over 6 cm from one side to the other. The superbly lustrous crystals have a smoldering glow to them unlike amethyst from anywhere else. Ex. Rebecca Stewart Collection.
5.8 x 1.8 x 1.4 cm, 5.4 x 1.2 x 1.2 cm, 3.1 x 1.3 x 1.2 cm. Two fine sceptres and a conventional prism with cool inclusions from the famed quartz locality of Brandberg. Both of the sceptres combine smoky and amethystine hues, and are wonderfully clear. The prism has a very slight amethyst tone to it, but what makes it truly interesting are the deep internal inclusions of little white rhombohedrons of (calcite?).
7.4 x 4.2 x 2.4 cm. Three zoned, banded amethyst "points" on a shard of matrix, from the west shore of Lake Balkash in Kazakhstan.
7.1 x 5.8 x 3.1 cm. Some of the agate varieties are prized by collectors, as these Montana "Dryhead" agates are, with their gorgeous colors and patterns locked inside the surrounding nodules. This one shows delicate banding of pink and earth tones. It has been polished to bring out the beauty, as is usual for these.
3.2 x 3.1 x 1.8 cm. This Vera Cruz amethyst miniature is much better in person - the two crystals slant out from one another in a perfect "V", from a little bit of matrix. They have a soft lavender blush to them.
7.4 x 4.8 x 3.4 cm. A cluster of crystals of colorless quartz wrapped with a second generation of small, sparkly crystals of amethyst and capped with gemmy amethystine terminations.
5.6 x 2.4 x 1.8 cm. An unusually high-quality California smoky quartz crystal - in fact, quite "Swiss" in appearance except for a naturally pitted and striated back face. It is water-clear through the center and like glass on the front faces.
6.8 x 6.0 x 5.4 cm. A specimen of very sharp crystals of microcline, including some little Carlsbad Twins - with smoky quartz points sticking up amongst them, and a rare association of purple fluorite octahedral. From a recent find in Argentina.
11.9 x 6.8 x 6.8 cm. An extraordinary specimen of quartz from Hot Springs, Arkansas. This is a doubly-terminated compound crystal that has split into two terminations at both ends. Smaller crystals garland the center of the crystal. Ex. Richard Hauck Collection.
6.6 x 5.1 x 4.3 cm. This is from an absolutely wonderful pocket of deep pink/green bi-colors found in the late 1980s, and very classic for the style in form and overall aesthetics. The tourmaline is 6.3 x 2.3 x 2 cm in size and has intense color to each end. Often, only one or the other end is deeply colored, and one pale. Here, the pink is almost red in hue, and the green is very saturated. I love the different tourmaline terminations you see on these - so dramatic, split apart by the veil of white in the middle. This is a floater, complete all around, with sheaves of cleavelandite matrix and a 4cm doubly-terminated quartz attached. The tourmaline itself is unusually translucent, as most are darker, and shows its colors with only minimal backlighting.
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Rob Lavinsky, rob@irocks.com
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Mineral Specimens by species; or
by specimen id.
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share specimen![Quartz from Grischun (Grisons; Graubünden), Switzerland [db_pics/mdpics/MD-216442a.jpg]](db_pics/mdpics/MD-216442a.jpg)
![Chalcopyrite, Quartz from Concepción del Oro, Mun. de Concepción del Oro, Zacatecas, Mexico [db_pics/mdpics/MD-216446a.jpg]](db_pics/mdpics/MD-216446a.jpg)
![Chalcopyrite, Quartz from Concepción del Oro, Mun. de Concepción del Oro, Zacatecas, Mexico [db_pics/mdpics/MD-216446b.jpg]](db_pics/mdpics/MD-216446b.jpg)
![Quartz (Var: Amethyst) from Amatitlán, Mun. de Zumpango del Rio, Guerrero, Mexico [db_pics/mdpics/MD-216448a.jpg]](db_pics/mdpics/MD-216448a.jpg)
![Hübnerite, Quartz from Huayllapon Mine, Pasto Bueno District, Pallasca Province, Ancash Department, Peru [db_pics/mdpics/MD-216455a.jpg]](db_pics/mdpics/MD-216455a.jpg)
![Gold, Quartz from http://www.origsix.com). [db_pics/mdpics/MD-216509a.jpg]](db_pics/mdpics/MD-216509a.jpg)
![Quartz (Var: Amethyst) from Artigas, Artigas Department, Uruguay [db_pics/mdpics/MD-216523a.jpg]](db_pics/mdpics/MD-216523a.jpg)
![Quartz from Brandberg area, Brandberg District, Erongo Region, Namibia [db_pics/mdpics/MD-216529a.jpg]](db_pics/mdpics/MD-216529a.jpg)
![Quartz (Var: Amethyst) from Lake Balkash, Qaraghandy Oblysy (Karaganda Oblast'), Kazakhstan [db_pics/mdpics/MD-216543a.jpg]](db_pics/mdpics/MD-216543a.jpg)
![Chalcedony (Var: Agate) from Dryhead Agate Mine, Carbon Co., Montana, USA [db_pics/mdpics/MD-216544a.jpg]](db_pics/mdpics/MD-216544a.jpg)
![Quartz (Var: Amethyst) from Cerro De La Concordia, Piedra Parada (Piedras Parado), Mun. de Tatatila, Veracruz, Mexico [db_pics/mdpics/MD-216545a.jpg]](db_pics/mdpics/MD-216545a.jpg)
![Quartz (Var: Amethyst) from Boekenhoutshoek area (Boekenhouthoek), Mkobola district, Mpumalanga Province, South Africa [db_pics/mdpics/MD-216546a.jpg]](db_pics/mdpics/MD-216546a.jpg)
![Quartz (Var: Smoky Quartz) from Saline Valley, Inyo Co., California, USA [db_pics/mdpics/MD-216547a.jpg]](db_pics/mdpics/MD-216547a.jpg)
![Microcline, Quartz (Var: Smoky Quartz), Fluorite from Papachacra, Belen Department, Catamarca, Argentina [db_pics/mdpics/MD-216549a.jpg]](db_pics/mdpics/MD-216549a.jpg)
![Quartz from Hot Springs, Garland Co., Arkansas, USA [db_pics/mdpics/MD-216615a.jpg]](db_pics/mdpics/MD-216615a.jpg)
![Elbaite, Albite, Quartz from Stak Nala, Haramosh Mts., Skardu District, Baltistan, Northern Areas, Pakistan [db_pics/mdpics/MD-216618a.jpg]](db_pics/mdpics/MD-216618a.jpg)