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Mineral Specimens with Quartz
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13.1 x 3.9 x 2.9 cm. A quartz crystal densely included with a variety of Riverside County minerals - montmorillonite (clay), the whitish stuff, along with cookeite -- and, a cluster of schorl tourmaline crystals, including one long one that extends most of the way up the side of the quartz crystal. There are little needle-like crystals of schorl shooting through the center of the quartz as well.
4.4 x 1.9 x 1.5 cm. Now here is something rare on the market - a quartz crystal (with inclusions) from Mt. Sinai in Egypt, known much better for its prominent place in Old Testament history than for mineral specimens. The inclusions are listed as clay, but they appear a bit more like chlorite.
7.0 x 5.9 x 2.9 cm. These Chinese sphalerites have carved out a place as some of the best for the species, for their size, and deep wine-colored gemminess. The large compound crystal here measures over 3 cm across! The sphalerites are on a bed of intermixed micro sphalerites and quartz crystals.
17.4 x 13.9 x 12.4 cm. WOW! this dramatic piece is a large natural vug formed form a lava bubble, pulled out of the surrounding host rock intact, lined with quartz on which over a dozen salmon-pink stilbite bowties have formed, in addition to several large, rusty-red heulandites. The crystals are beautifully isolated on the quartz. This is a large, showy specimen. Ex. George Feist Collection Indian suite.
8.7 x 6.9 x 5.4 cm. I cannot say enough about this incredibly fine California quartz specimen out of the Hauck Collection. The crystals are so pure and limpid, they appear gem-like in person. In their centers are "gardens" of mineral inclusions (clay?) that emphasize the clarity of the quartz, as you look through their glassy surfaces to these colorful inclusions. Really, this is a TOP quartz specimen for a quartz collector, from a locality from which it is not easy to find superb-quality specimens on the market! In fact, I couldn’t imagine better from Brazil.
6.9 x 1.8 x 1.5 cm. A very unusual DOUBLY-TERMINATED crystal of amethyst from Brandberg - having in addition to this distinction the isolated internal blush of intense purple color that makes these so famous. Ex. Charlie Key collection.
6.4 x 3.8 x 2.7 cm. We have had a number of Brandberg amethysts from the Charlie Key collection, but this is a specimen of clear quartz from there - actually rather unusual on the market; you mostly just see the amethysts and smokies. This cluster is distinguished not only by its fine aesthetics and clarity, but the interesting sceptering, with inclusions turning the bottoms a tan color, capped by these gemmy tops.
9.7 x 7.4 x 3.9 cm. This is a stunning old-timer from Russia, a large aquamarine crystal spiking through a crystal of smoky quartz (the quartz wrapped itself around the aqua). Though the aquamarine does have one repair with some restoration at the join, on the backside of the repair, it is otherwise complete and shows very little damage all around. One of its terminations has been retained as well. This is a big crystal, measuring 6.5 cm, and much of it is really gemmy, with fine saturated blue color. In addition to its being from Russia, the contrast with the smoky quartz makes it really special, compared to your usual Paki specimen. The accompanying collection card shows it to have moved form the Shortmann collection to Bentley’s Minerals in 1974, which then sold it to collector John Durkos. From him it went to the George Elling collection of gem crystals. This is old material, perhaps even from the 1800s though one cannot prove it. Certainly, it is classic for old Russian beryl, rarely seen on matrix!
9.1 x 3.2 x 3.0 cm. A large, doubly-terminated amethystine quartz crystal from Kenya. It has a blush of purple at one end, and is reverse-sceptred at the other termination. Inside, you can see little inclusions of hematite, and what appear to be little bright red crystals of lepidocrocite as well.
4.0 x 1.8 x 0.9 cm. Cute specimen - a 2.3-cm teal-colored indicolite tourmaline sits on a complete, tabular crystal of quartz. It is terminated on one end.
15.9 x 11.9 x 5.9 cm. A BIG, RICH specimen of whopper tetrahedrites from Peru! These crystals, some with a thin coating of brassy chalcopyrite, measure to 2.5 cm along the edge. There is a bit of damage to a few corners, but very modest. In the crook of the specimen is a cluster of quartz crystals that have grown on a patch of sphalerite, which is intergrown with the tetrahedrites.
8.9 x 8.7 x 4.9 cm. Ferberite specimen with very large crystals (to 5 cm in length) arranged in a beautiful stacked pattern. They have high luster and a lot of flash. There is minor associated quartz.
7.1 x 6.4 x 5.2 cm. Gorgeous, gemmy quartz crystals jut out in all directions from a natural base of bladed, black hematite in a rosette form - a beauty from China.
9.6 x 8.9 x 5.4 cm. Not your "everyday" Arkansas quartz - this is a stunning cluster of DOUBLY-TERMINATED crystals, the largest measuring 8.5 cm. hard to photograph, really terrific in person - the crystals are very gemmy and the overall form, with no matrix, is wonderful. Ex. Richard Hauck quartz collection.
4.8 x 3.8 x 3.3 cm. This specimen is a great small cabinet size piece consisting of super quality, sharp, gemmy, highly lustrous, prismatic, purple prismatic crystals (one of them is a slight scepter habit) of Amethyst measuring up to 1.5 cm sitting atop white/colorless, modified scalenohedra of Calcite on matrix. This piece is remarkable for Bolivia as it is from an "Alpine-type" locality, and features a type of crystallization that is virtually unheard of from Bolivia. This is one of the best pieces from the find for quality, aesthetics and overall appeal. Ex. Brian Kosnar.
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Rob Lavinsky, rob@irocks.com
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Mineral Specimens by species; or
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share specimen![Quartz, Schorl, Montmorillonite, Cookeite from Southern Pacific Silica Quarry (Nuevo Quarry), Nuevo, Riverside Co., California, USA [db_pics/mdpics/MD-150550a.jpg]](db_pics/mdpics/MD-150550a.jpg)
![Quartz from Mount Sinai, Sinai Peninsula, Egypt [db_pics/mdpics/MD-150552a.jpg]](db_pics/mdpics/MD-150552a.jpg)
![Sphalerite, Quartz from Kangjiawan Pb-Zn-Ag-Au deposit, Shuikoushan ore field, Changning Co., Hengyang Prefecture, Hunan Province, China [db_pics/mdpics/MD-150555a.jpg]](db_pics/mdpics/MD-150555a.jpg)
![Stilbite-Ca, Heulandite, Quartz from Jalgaon District, Maharashtra, India [db_pics/mdpics/MD-150560a.jpg]](db_pics/mdpics/MD-150560a.jpg)
![Quartz from Shingle Springs Mine (Docs Mine), El Dorado Co., California, USA [db_pics/mdpics/MD-150564a.jpg]](db_pics/mdpics/MD-150564a.jpg)
![Quartz (Var: Amethyst) from Brandberg area, Brandberg District, Erongo Region, Namibia [db_pics/mdpics/MD-151590a.jpg]](db_pics/mdpics/MD-151590a.jpg)
![Quartz from Brandberg area, Brandberg District, Erongo Region, Namibia [db_pics/mdpics/MD-151611a.jpg]](db_pics/mdpics/MD-151611a.jpg)
![Beryl (Var: Aquamarine), Quartz (Var: Smoky Quartz) from Murzinka (Mursinsk; Murzinsk; Murzinska) Mine, Sarapulka (Murzinka) District, Ekaterinburgskaya (Sverdlovskaya) Oblast', Middle Urals, Urals Region, Russia [db_pics/mdpics/MD-151615a.jpg]](db_pics/mdpics/MD-151615a.jpg)
![Quartz (Var: Amethyst) from Turkana District, Rift Valley Province, Kenya [db_pics/mdpics/MD-151616a.jpg]](db_pics/mdpics/MD-151616a.jpg)
![Tourmaline (Var: Indicolite), Quartz from Morro Redondo mine, Coronel Murta, Jequitinhonha valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-151621a.jpg]](db_pics/mdpics/MD-151621a.jpg)
![Tetrahedrite, Sphalerite, Quartz from Casapalca, Huarochiri Province, Lima Department, Peru [db_pics/mdpics/MD-151623a.jpg]](db_pics/mdpics/MD-151623a.jpg)
![Ferberite, Quartz from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-151624a.jpg]](db_pics/mdpics/MD-151624a.jpg)
![Quartz, Hematite from Lechang Mine, Lechang Co., Shaoguan Prefecture, Guangdong Province, China [db_pics/mdpics/MD-151637a.jpg]](db_pics/mdpics/MD-151637a.jpg)
![Quartz from Mt Ida, Montgomery Co., Arkansas, USA [db_pics/mdpics/MD-151639a.jpg]](db_pics/mdpics/MD-151639a.jpg)
![Quartz (Var: Amethyst) from Bombori, Chayanta Province, Potosà Department, Bolivia [db_pics/mdpics/MD-152431a.jpg]](db_pics/mdpics/MD-152431a.jpg)
![Quartz (Var: Amethyst) from Bombori, Chayanta Province, Potosà Department, Bolivia [db_pics/mdpics/MD-152431b.jpg]](db_pics/mdpics/MD-152431b.jpg)