|
Mineral Specimens with Calcite
(click on a page number to go to that page:)
page 29 / 208 - prev - 3120 specimens selected - next
Another unique specimen from this famous pocket , with inesite in isolated crystals to 1 cm (unusual!) , mixed with small, sharp orange prehnites, perched atop a gemmy and lustrous calcite rhombohedron! I have not seen another like it. 5.1 x 4.5 x 1.6 cm
3.2 x 3.0 x 2.4 cm. A beautiful and sculptural specimen of gemmy, emerald-green dioptase crystals to 1.1 cm richly scattered on a box work cast of calcite crystals from Tsumeb. The dominating, large dioptase really sets this showy piece off.
6.4 x 5.4 x 2.5 cm. Beautifully splendent, jet-black and twinned sphalerite variety marmatite crystals enhanced by transparent, colorless, nail head calcite crystals make for a very aesthetic and showy specimen from Trepca, Serbia. The stunning large crystal is 3.0 cm and the piece was mined in 1980. Marmatite is an iron-rich variety of sphalerite.
15.7 x 14.4 x 12.7 cm. Gary Hansen mined these amazingly sculptural "sand calcites" (calcites heavily included with desert sand) in South Dakota in the 1960s - and they have not been seen since. Though we have featured some really nice ones, this one is in a class by itself due to its prodigious size - making it truly look like an expensive piece of modern art - only NATURAL! Like the others, it is a floater, so there are no ugly areas, and you can display it from almost any direction with great visual impact!
26.5 x 24.8 x 14.3 cm. A monster calcite specimen out of the noted Miller Collection - a huge cluster of gorgeously sharp rhombs, with a faint pink blush from the manganese content. Pyrites and calcite microcrystals add variety to the surface of the rhombs. As you can see, the crystals flouresce a bright cherry red! The crystals measure to 5 cm in each direction. A major piece from a famous calcite collection!
16.1 x 11.2 x 7.0 cm. Here is a large and pretty old Colorado pseudomorph, not common at all on the market these days! It is an Ouray quartz-after-calcite, with the sparkly quartz microcrystals having covered and partly replaced the underlying "fingers" of calcite. This is a floater specimen, beautiful all the way around and actually displayable from either side. Ex. Ed David Collection.
10.2 x 4 x 3.6 cm. Spectacular pair of gemmy lustrous calcite-that-looks-like-Quartz crystals set beautifully on a matrix of specular hematite and secondary quartz crystals. The longest calcite crystal is 5.7 cm and doubly-terminated.
5.1 x 2.9 x 1.8 cm. Dazzling coating of gemmy microcrystals of Ettringite on well-terminated calcite crystals. The color and luster of the Ettringite is about as brilliant as you will find.
7.9 x 7.2 x 4.5 cm. Attractive pink manganoan calcite on massive calcite underlying, but also with some weird iron-colored ball-shaped mineral in association. We think its just iron-stained calcite of a third generation yet, on the same specimen….but it is weird-looking in a good way, not an ugly way!
7 x 4.2 x 4 cm. Vein of incredibly gemmy Rhodochrosite scalenohedrons with absolutely superb luster. A few of the crystals are doubly-terminated and range up to about .8 cm in length. There is a fair amount of edge wear and outright damage on the more exposed end of the specimen, but the main pocket is in much better condition.
6.2 x 3.8 x 1.0 cm. Beautiful neon yellow ettringite crystals liberally sprinkled on a plate of crystallized sharp calcite scalenohedra.
12.5 x 10.6 x 5.5 cm. A very attractive large plate of white calcite rhombs sprinkled delicately with glistening dioptase! This is classic 1970s vintage Tsumeb!
5.3 x 3.4 x 3.3 cm. The Meikle Mine is known mostly for its magnificent barites, but occasionally it produced fine calcites as well - though not many, so they are not well-known by collectors. This is a superb TWIN, with a very light golden color, stunning luster and beautiful symmetrical form. It is complete all the way around.
8.6 x 6.5 x 3.7 cm. A plate of golden fluorite crystals ringed with modified rhombohedrons of translucent, milky calcite - from Spain. This association is common from this locality.
7.9 x 6.1 x 4.6 cm. This is a gemmy yellow twin of calcite (the back half grew against matrix)decorated with small crystals of bright red realgar, with some minor calcites and matrix at the bottom forming an accenting base. A very attractive specimen that was once in the collection of Steve Smale.
(click on a page number to go to that page:)
page 29 / 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![Inesite, Calcite, Prehnite from N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-114277a.jpg]](db_pics/mdpics/MD-114277a.jpg)
![Dioptase, Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-114347a.jpg]](db_pics/mdpics/MD-114347a.jpg)
![Sphalerite (Var: Marmatite), Calcite from Trepča complex, Trepča valley, Kosovska Mitrovica, Kosovo [db_pics/mdpics/MD-114352a.jpg]](db_pics/mdpics/MD-114352a.jpg)
![Calcite from Rattlesnake Butte, Jackson Co., South Dakota, USA [db_pics/mdpics/MD-114508a.jpg]](db_pics/mdpics/MD-114508a.jpg)
![Calcite (Var: Manganoan Calcite), Pyrite from Naica, Mun. de Saucillo, Chihuahua, Mexico [db_pics/mdpics/MD-114520a.jpg]](db_pics/mdpics/MD-114520a.jpg)
![Quartz, Calcite from Ouray District (Uncompahgre District), Ouray Co., Colorado, USA [db_pics/mdpics/MD-114611a.jpg]](db_pics/mdpics/MD-114611a.jpg)
![Calcite, Hematite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-117510a.jpg]](db_pics/mdpics/MD-117510a.jpg)
![Ettringite, Calcite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-117511a.jpg]](db_pics/mdpics/MD-117511a.jpg)
![Calcite (Var: Manganoan Calcite) from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-117623a.jpg]](db_pics/mdpics/MD-117623a.jpg)
![Rhodochrosite, Calcite from Black Rock Mine, Black Rock, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-117629a.jpg]](db_pics/mdpics/MD-117629a.jpg)
![Rhodochrosite, Calcite from Black Rock Mine, Black Rock, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-117629b.jpg]](db_pics/mdpics/MD-117629b.jpg)
![Ettringite, Calcite from N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-117707a.jpg]](db_pics/mdpics/MD-117707a.jpg)
![Dioptase, Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-117712a.jpg]](db_pics/mdpics/MD-117712a.jpg)
![Calcite from Meikle Mine, Bootstrap District, Elko Co., Nevada, USA [db_pics/mdpics/MD-117870a.jpg]](db_pics/mdpics/MD-117870a.jpg)
![Fluorite, Calcite from Berbes Mining area, Ribadesella, Asturias, Spain [db_pics/mdpics/MD-117873a.jpg]](db_pics/mdpics/MD-117873a.jpg)
![Calcite, Realgar from Jiepaiyu Mine (Shimen Mine), Shimen As-(Au) deposit, Shimen Co., Changde Prefecture, Hunan Province, China [db_pics/mdpics/MD-117878a.jpg]](db_pics/mdpics/MD-117878a.jpg)