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3.9 x 3.3 x 2.2 cm. From one of America’s great copper mines, this specimen features a quartz matrix of colorless quartz crystals, to 1.0 cm in length, which host two equant, splendent, octahedral pyrite crystals, to 1.5 cm across. This is an excellent example of what used to be, from Butte. Ex. Richard Hauck Collection.
10.0 x 2.5 x 1.8 cm. This is absolutely gemmy and sparkles all around. Everything is complete and pristine. Ex. Dr. Eugene Meieran Collection.
3.7 x 3.5 x 3.1 cm. As schorls go, this is quite lovely. The main crystal, 1.8 cm in length, is jet-black with mirror-like luster and sharp edges. Sitting on a matrix of smoky quartz crystals, it is quite aesthetic. Ex. Wendell E. Wilson Collection.
3.3 x 2 x 2 cm. A superb Pyrrhotite from one of the world’s great localities. This fine specimen has two gorgeous hexagonal crystals, each over 1 cm across and thick, sitting on a matrix of black sphalerite and quartz. The brassy color and luster are unmatched, and there is even a hint of iridescence. Ex. Wendell E. Wilson Collection.
2.5 x 2.2 x 1.9 cm. Brazil has produced literally tons of rutilated quartzes. But good thumbnails are rare. This 1.7 cm specimen, lustrous and sharp, sits on a nest of shiny metallic rutile needles. Very aesthetic. Ex. Wendell E. Wilson Collection.
A fine Rapid Creek combo specimen, with crystals to 0.5 cm of the classic very deep teal blue lazulite, in association with wardite and siderite. BETTER IN PERSON! 4.1 x 3.2 x 1.8 cm
A VERY SHOWY and UNUSUAL curved "CURTAIN" of transparent to translucent rose quartz crystals, shaped like a crown, on smoky quartz matrix from Minas Gerais, Brazil. These are 30-40 years old in general and date from the Sapucaia discoveries. Ex Gene Meieran Quartz Collection with label 4.1 x 3.8 x 2.8 cm
A superb, large plate of slender, gemmy quartz crystals that look much like amethyst due to their heavy inclusions of the iron-based mineral lepidocrosite. However, they should be called amethystine because the color is not due to the same reasons as the purple in amethyst. The lepidocrocite was deposited on the quartz crystals as they grew, and engulfed as the crystals continued their growth, so that now you can see the lepidocrocite deep inside each individual crystal. Not only interesting, but really beautiful! 11.5 x 9.5 x 4.7 cm
6.6 x 5.9 x 5.2 cm. Sharp, golden, 2-cm chalcopyrite crystals in a spray perched atop a knoll of quartz. This is old classic material, from the heyday of the Herodsfoot Mine.
A hard-to-find, old Sunnyside Mine rhodo specimen of EXCEPTIONAL color and attractiveness, with a number of well-formed rhombs to over one centimeter, on a bed of sparkly quartz. ATTRACTIVE, rather than "lumpy" specimens, are hard to come by from this old location. 6.1 x 4.8 x 2.3 cm
12.8 x 10.6 x 4.5 cm. Monazite gets its name from the Greek word "monazein", which means "to be alone", in allusion to its isolated crystals and their rarity when first found. Monazite is usually found in granitic pegmatites, but these crystals are found in hydrothermal tin veins where is an absolute absence of Thorium (usually a trace element in Monazite). This is a remarkable, very well crystallized, very rare, specimen hosting sharp, lustrous, translucent, orange-pink, twinned crystals of Monazite-(Ce) measuring 6 mm on Quartz crystals on matrix. These twins are some of the most distinct and impressive twinned Monazite crystals I have seen from Bolivia. The crystals actually show a color change in different lighting ranging from orange-pink to a yellowish color depending upon the light source. This piece is from the same mine for which this material was discovered along the Contacto and San Jose veins in this mine and was first described by Sam Gordon and Mark Bandy.
7.6 x 1.8 x 1.6 cm. This is a great superb gem Smoky Quartz crystal from one of the most storied and well known districts in Colorado. The pegmatites near the Lake George area of Colorado have produced what most collectors and dealers consider to be the finest Amazonite specimens from the standpoint of superb color, top quality, wonderful display specimens and excellent associations. This particular specimen does not have any Amazonite, but it is a virtually water-clear, sharp, distinct Smoky Quartz crystal with rich internal color. The tip of the crystal has a small contact, but the indentation near the termination is not damage, as it is crystallized. This specimen was collected 30 years ago (April 1979), when Richard Kosnar found some of the finest color Amazonite from Colorado extant. Ex. Richard Kosnar Collection.
12.5 x 10.2 x 3.8 cm. I'm always interested when I see the two carbonates Rhodochrosite and Calcite together on the same piece. Most often, they did not form during the same time, but the association is still interesting to me. This cabinet sized specimen is filled with soft pink, lustrous rhombohedra of Rhodochrosite which are associated with small stubby Quartz crystals and a few "sprays" of scalenohedral Calcite. This area is one of the most classic Peruvian mining districts, and big colorful specimens like this one do not seem to be nearly as available as they were 10-15 years ago.
9.0 x 7.8 x 7.8 cm. A fine specimen of this classic Brazilian material. Several sharp, lustrous, gem to gemmy, classic pink color, hexagonal crystals of Rose Quartz sit atop a rather thick, slightly smoky color, lustrous, partial prism of Quartz from the Sapucaia mine in Brazil. This mine is well known for its beautiful and rare phosphate species, along with some stunningly fine quality specimens of Rose Quartz. The best of the Rose Quartz specimens came out in the 1970s from Sapucaia, and remain as some of the finest in the world.
6.2 x 5.8 x 2.9 cm. This specimen was found about 5-6 months ago (2009), and is one of the more attractive Cassiterite association specimens that I have encountered in years. Bolivia has probably produced more tin than any other country in the world. The great tin mines at Viloco (sometimes called Araca) have produced some of the most magnificent Cassiterite specimens extant. This particular specimen host of several fine, sharp, highly lustrous, black-brown cyclic twinned crystals measuring up to 0.8 cm across which are associated with very appealing Quartz crystals that actually have small Smoky Quartz "phantoms" in the center of the prisms. The largest Quartz crystal measures 3.4 cm long. All Content and Design ©1996-2012 The ArkenstonePowered by http://mineralwebsites.comMineral Specimens by species; or by specimen id. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
share specimen![Pyrite, Quartz from Leonard Mine, Butte, Butte District, Silver Bow Co., Montana, USA [db_pics/mdpics/MD-262449a.jpg]](db_pics/mdpics/MD-262449a.jpg)
![Quartz, Elbaite from Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-262451a.jpg]](db_pics/mdpics/MD-262451a.jpg)
![Schorl, Quartz (Var: Smoky Quartz) from Erongo Mountain, Usakos and Omaruru Districts, Erongo Region, Namibia [db_pics/mdpics/MD-262499a.jpg]](db_pics/mdpics/MD-262499a.jpg)
![Pyrrhotite, Sphalerite, Quartz from Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Primorskiy Kray, Far-Eastern Region, Russia [db_pics/mdpics/MD-262509a.jpg]](db_pics/mdpics/MD-262509a.jpg)
![Quartz, Rutile, Hematite from Novo Horizonte, Bahia, Northeast Region, Brazil [db_pics/mdpics/MD-262511a.jpg]](db_pics/mdpics/MD-262511a.jpg)
![Lazulite, Wardite, Quartz, Siderite from Rapid Creek, Dawson Mining District, Yukon Territory, Canada [db_pics/mdpics/MD-26260a.jpg]](db_pics/mdpics/MD-26260a.jpg)
![Quartz (Var: Rose Quartz), Quartz (Var: Smoky Quartz) from Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-26309a.jpg]](db_pics/mdpics/MD-26309a.jpg)
![Quartz (Var: Amethyst), Lepidocrocite from Huaron Mining District, San Jose de Huayllay District, Cerro de Pasco, Daniel Alcides Carrión Province, Pasco Department, Peru [db_pics/mdpics/MD-26315a.jpg]](db_pics/mdpics/MD-26315a.jpg)
![Chalcopyrite, Quartz from Herodsfoot Mine (North Herodsfoot Mine), Lanreath, Menheniot Area, Liskeard District, Cornwall, England, UK [db_pics/mdpics/MD-263151a.jpg]](db_pics/mdpics/MD-263151a.jpg)
![Rhodochrosite, Quartz from Sunnyside Mine (American Tunnel; Mogul Mine; Washington Mine; Belle Creole; Gold Prince; Brenneman Mine; Sunnyside Mine Group), Howardsville, Silverton District, San Juan Co., Colo [db_pics/mdpics/MD-26316a.jpg]](db_pics/mdpics/MD-26316a.jpg)
![Monazite-(Ce), Quartz from Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosà Department, Bolivia [db_pics/mdpics/MD-263182a.jpg]](db_pics/mdpics/MD-263182a.jpg)
![Monazite-(Ce), Quartz from Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosà Department, Bolivia [db_pics/mdpics/MD-263182b.jpg]](db_pics/mdpics/MD-263182b.jpg)
![Monazite-(Ce), Quartz from Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosà Department, Bolivia [db_pics/mdpics/MD-263182c.jpg]](db_pics/mdpics/MD-263182c.jpg)
![Quartz (Var: Smoky Quartz) from R. A. Kosnar claim, Yucca Hill, Steven's Ranch, Lake George, Park Co., Colorado, USA [db_pics/mdpics/MD-263187a.jpg]](db_pics/mdpics/MD-263187a.jpg)
![Rhodochrosite, Quartz, Calcite from Pachapaqui District, Bolognesi Province, Ancash Department, Peru [db_pics/mdpics/MD-263196a.jpg]](db_pics/mdpics/MD-263196a.jpg)
![Rhodochrosite, Quartz, Calcite from Pachapaqui District, Bolognesi Province, Ancash Department, Peru [db_pics/mdpics/MD-263196b.jpg]](db_pics/mdpics/MD-263196b.jpg)
![Quartz (Var: Rose Quartz), Quartz from Sapucaia Mine, Sapucaia do Norte, Galiléia, Doce valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-263205a.jpg]](db_pics/mdpics/MD-263205a.jpg)
![Quartz (Var: Rose Quartz), Quartz from Sapucaia Mine, Sapucaia do Norte, Galiléia, Doce valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-263205b.jpg]](db_pics/mdpics/MD-263205b.jpg)
![Cassiterite, Quartz from Viloco Mine (Araca mine), Loayza Province, La Paz Department, Bolivia [db_pics/mdpics/MD-263703a.jpg]](db_pics/mdpics/MD-263703a.jpg)
![Cassiterite, Quartz from Viloco Mine (Araca mine), Loayza Province, La Paz Department, Bolivia [db_pics/mdpics/MD-263703b.jpg]](db_pics/mdpics/MD-263703b.jpg)