|
Mineral Specimens with Calcite
(click on a page number to go to that page:)
page 62 / 208 - prev - 3120 specimens selected - next
9.2 x 8.8 x 5.4 cm. This find occurred around 6 years or so ago - golden calcite crystals associated with stibnite, often with needles of stibnite that sometimes penetrate the crystals. The stibnite here is massive in form, creating a natural base for the 8.5 cm twinned crystal that sits atop it.
6.9 x 5.4 x 5.4 cm. This large and striking calcite crystal, with its beautifully striated faces, formed atop a small knob of matrix, which you can see a little bit of on the bottom of the specimen - so that it was able to form completely almost as a floater, with faces even on the underside. What is really weird about it is that there is a thin ridge of massive calcite that the crystal appears to have formed around, which you can see running right through the middle of the crystal and partially exposed on the underside. That is where the slight bit of color is coming from (it has some iron oxide in it). A very Russian-looking crystal, but from Charcas!
16.4 x 12.4 x 5.4 cm. At first glance, it is hard to identify the form of these very unusual calcite crystals, but a closer look identifies them as shallow rhombs, densely intergrown. They entirely cover the matrix to form a large, eye-catching and uncommon calcite specimen. Ex. Dave Stoudt, who was stationed in Eastern Europe for years and was able to pick up some really unusual specimens while there.
10.4 x 5.9 x 5.1 cm. As you can see, this is quite a striking large twin from the Tri-State District, with an outstanding "V" reentrant right at the top. It is translucent, with nice golden color, and in beautiful condition: complete, undamaged and free of bruising all the way around. Ex. George Feist collection.
21.9 x 17.4 x 9.4 cm. Amidst a field of lustrous, bright purple amethyst crystals, a large, lone scalenohedron of silky calcite rises, to a height of 7 cm. The calcite is translucent, actually transparent in the center but with ornate stepped modifications on the faces that give it a silky appearance. A large, pretty and quite dramatic specimen.
17.9 x 13.8 x 9.4 cm. The specimens from this unique find of about a year and a half ago are long gone from the market. Here is an example from the find that amply shows off why it was so special: glittery golden pyrite selectively deposited along the edges of large crystals of calcite, up to 6 cm across. On many of these specimens there was not very good coverage of the pyrite, but this one is richly decorated with it - so it has both fine quality AND size for the find.
8.5 x 4.3 x 3.9 cm. An extremely aesthetic and elegant specimen from Mexico, featuring a pristine, snow-white crystal of calcite measuring 7.5 cm, associated with a cluster of prismatic amethyst crystals intergrown with a second calcite crystal with stepped faces. The amethyst gives a pleasing color accent to the specimen.
6.6 x 5.4 x 4.9 cm. Here is a rare and beautiful association specimen from the Congo, featuring a pocket containing large (to one cm), gemmy crystals of lustrous pink cobaltoan calcite, in association with green botryoidal kolwezite (type locality, obviously) - chemical formula (Cu,Co)2(CO3)(OH)2.
5.7 x 5.3 x 3.3 cm. A beautiful flower of gray calcite from Eastern Europe - actually consisting of stacked, thin, flattened RHOMBS, though they do not appear to be at first glance. Highly aesthetic, and in pristine condition. This is a superb example for the size, similar to pieces you might find at shows in the mid to late 90s.
9.5 x 8.4 x 3.9 cm. You have seen the weird spherical (botryoidal), translucent yellow fluorites that are well-known from this locality. Here, though, you have two sharp calcite crystals on a bed of quartz, with the small yellow botryoidal fluorites having grown on top of the calcites!
7.7 x 6.4 x 4.7 cm. The classic Bisbee locality turned out calcite specimens in a dizzying array of forms, and fortunately, they were preserved from early days by miners who admired their variety and beauty, and knew they had no ore value so they were allowed to keep them. Here is a cluster of stalactitic knobs topping fans of euhedral, sugary crystals.
5.9 x 5.0 x 4.8 cm. Lustrous, orangey-red and hoppered vanadinite crystals to 9 mm are richly scattered in contrasting calcite-rich matrix on this showy old-time Arizona specimen. Ex. Charles Hansen Collection.
9.0 x 7.3 x 4.4 cm. Gem-like, water-clear calcite scalenohedrons are richly and aesthetically scattered on vuggy matrix coated with beautifully contrasting green mottramite on this EXCELLENT Tsumeb specimen. The longest calcite is 1.2 cm. Sharp Tsumeb calcite scalenohedrons, such as these, are RARE, with most forms being rhombohedrons. This outstanding specimen is from the Rob Smith Collection, a noted Tsumeb collector.
8.3 x 5.8 x 5.2 cm. A classic and very showy combination specimen from the famous Wessels Mine of a large field of variable-length acicular kutnohorite crystals. A curtain or wall of matrix separates the kutnohorite from a vuggy cluster of botryoidal manganoan calcite at one end. A striking, distinctively separated combination specimen, which includes this uncommon carbonate.
10.2 x 6.6 x 6.4 cm. A very rare MATRIX Anhydrite specimen from Naica featuring a classic, powder blue color, sharp, lustrous prismatic Anhydrite crystal group measuring 5.0 cm on lustrous, rhombic, gemmy, light yellow color Calcite crystals. The specimen has a few other Anhdyrite crystals scattered throughout the matrix. Ex. Richard Kosnar Collection.
(click on a page number to go to that page:)
page 62 / 208 - prev - 3120 specimens selected - next
Rob Lavinsky, rob@irocks.com
All Content and Design ©1996-2012 The Arkenstone
Mineral Specimens by species; or
by specimen id.
|
share specimen![Calcite, Stibnite from Nandan Co., Hechi Prefecture, Guangxi Zhuang Autonomous Region, China [db_pics/mdpics/MD-165737a.jpg]](db_pics/mdpics/MD-165737a.jpg)
![Calcite, Stibnite from Nandan Co., Hechi Prefecture, Guangxi Zhuang Autonomous Region, China [db_pics/mdpics/MD-165737b.jpg]](db_pics/mdpics/MD-165737b.jpg)
![Calcite from Charcas, Mun. de Charcas, San Luis Potosí, Mexico [db_pics/mdpics/MD-165745a.jpg]](db_pics/mdpics/MD-165745a.jpg)
![Calcite from Herja Mine (Kisbánya), Baia Mare (Nagybánya), Maramures Co., Romania [db_pics/mdpics/MD-165782a.jpg]](db_pics/mdpics/MD-165782a.jpg)
![Calcite from Joplin Field, Tri-State District, Jasper Co., Missouri, USA [db_pics/mdpics/MD-165783a.jpg]](db_pics/mdpics/MD-165783a.jpg)
![Calcite, Quartz (Var: Amethyst) from Iraí, Alto Uruguai region, Rio Grande do Sul, South Region, Brazil [db_pics/mdpics/MD-165830a.jpg]](db_pics/mdpics/MD-165830a.jpg)
![Pyrite, Calcite from Chenzhong (?), Hunan Province, China [db_pics/mdpics/MD-165832a.jpg]](db_pics/mdpics/MD-165832a.jpg)
![Pyrite, Calcite from Chenzhong (?), Hunan Province, China [db_pics/mdpics/MD-165832b.jpg]](db_pics/mdpics/MD-165832b.jpg)
![Calcite, Quartz (Var: Amethyst) from Valenciana Mine, Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico [db_pics/mdpics/MD-166625a.jpg]](db_pics/mdpics/MD-166625a.jpg)
![Kolwezite, Calcite (Var: Cobaltoan Calcite) from Kolwezi, Western area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) [db_pics/mdpics/MD-166638a.jpg]](db_pics/mdpics/MD-166638a.jpg)
![Calcite, Jamesonite from Herja Mine (Kisbánya), Baia Mare (Nagybánya), Maramures Co., Romania [db_pics/mdpics/MD-166751a.jpg]](db_pics/mdpics/MD-166751a.jpg)
![Fluorite, Calcite from Mahodari, Nasik District, Maharashtra, India [db_pics/mdpics/MD-166772a.jpg]](db_pics/mdpics/MD-166772a.jpg)
![Calcite from Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA [db_pics/mdpics/MD-166783a.jpg]](db_pics/mdpics/MD-166783a.jpg)
![Vanadinite, Calcite from Old Yuma Mine (Yuma Mine), Saguaro National Monument, Amole District, Tucson Mts, Pima Co., Arizona, USA [db_pics/mdpics/MD-166888a.jpg]](db_pics/mdpics/MD-166888a.jpg)
![Vanadinite, Calcite from Old Yuma Mine (Yuma Mine), Saguaro National Monument, Amole District, Tucson Mts, Pima Co., Arizona, USA [db_pics/mdpics/MD-166888b.jpg]](db_pics/mdpics/MD-166888b.jpg)
![Calcite, Mottramite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-166894a.jpg]](db_pics/mdpics/MD-166894a.jpg)
![Calcite, Mottramite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-166894b.jpg]](db_pics/mdpics/MD-166894b.jpg)
![Kutnohorite, Calcite (Var: Manganoan Calcite) from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-167010a.jpg]](db_pics/mdpics/MD-167010a.jpg)
![Anhydrite, Calcite from Naica Mine, Naica, Mun. de Saucillo, Chihuahua, Mexico [db_pics/mdpics/MD-167133a.jpg]](db_pics/mdpics/MD-167133a.jpg)