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Mineral Specimens with Calcite
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5.8 x 4.4 x 2.5 cm. An EXCELLENT, PRISTINE, FLOATER cluster of golden-amber calcite scalenohedrons with well-defined phantoms from the famous mercury mines of Terlingua, Texas. The 5.0 cm, DT crystal is particularly striking. Specimens of this quality and size were never common. The mercury mines operated from 1850 to the 1940s. Ex. George Elling Collection.
4.2 x 2.9 x 2.5 cm. An intriquing and showy specimen from Berg Aukas, Namibia of lustrous, rust-brown, spearpoint-shaped blades of descloizite with serrated edges having preferential overgrowths of contrasting, yellow calcite. This is a really neat looking combination piece, from the mine that produced the world’s best descloizite. Have not seen another like it from this classic locality , producing mainly in the 1960s and 1970s. Ex. Brent Lockhart Collection.
5.3 x 3.8 x 2.5 cm. A cluster of bright pink crystals of the prized cobaltoan calcite varietal, in a shallow seam on the matrix.
12.1 x 8.7 x 4.4 cm. Unfortunately, the specimens from this find not too long back in China ran out quickly. It is certainly unique: brassy little pyrite crystals decorating the edges of large, tabular, translucent crystals of calcite. This one has a good rich covering of the pyrites.
5.5 x 5.1 x 4.4 cm. From the fluorite collection of Herb Obodda, a striking Naica fluorite not from the recent finds, but from mining in the 1980s there. What makes it so exceptional is the stark white calcite crystals on the back side that wrap around the front to create a pretty "frame" for the fluorite.
14.8 x 9.9 x 6.9 cm. The crystal form is recognizable, but certainly not the color! This calcite crystal was richly included with green chlorite, forming this striking specimen! The crystal measures 6 cm tip to tip.
8.2 x 5.5 x 3.4 cm. This calcite crystal, isolated on a matrix covered with sparkly stilibite microcrystals, looks like a jewel! It measures just under 3 cm across. There is a natural smoky inclusion in the center of the crystal that makes it hard for the camera to pick up on the high gemminess. The faces have wonderful luster.
14.4 x 10.2 x 8.7 cm. This wonderful specimen of Shullsburg calcite is better in person, because the calcite itself is actually a lot more transparent in person, a really large and wonderful crystal (5.5 cm). But what is best is how it is set perfectly in the curve of the pocket in which it formed, which was carefully removed to showcase the calcite "in situ". You cannot see the contact face of the calcite on the back side. Ex. George Feist Mid-West calcite collection.
This is a very intricate combinaiton piece featuring rich drapery of bushlike copper crystals, with a nice reddish patina, overtopping GEMMY, brilliantly lustrous rhombohedral clacites that are colored by red chalcotrichite inclusions; and the calcite itself grows over brilliantly lustrous small quartzes with hematite or iron red inclusions. All are classic for this locality, but I cannot recall seeing it all together in one specimen like this! 8 x 7 x 4 cm
8.5 x 6.9 x 4.7 cm. We acquired all the good specimens a year or so ago from this very small Chinese find of very distinctive calcites on matrix. They have an orange color, from what looks to be hematite inclusions, a silky surface, and what is most interesting about them is how they sit up completely exposed on the surface of the matrix as if gently placed there. This crystal measures 5.8 cm.
3.0 x 3.0 x 2.6 cm. A BEAUTIFUL and AESTHETIC Chinese combination specimen from the famous Yaogangxian Mine. An intergrown cluster of glassy, water-clear purple fluorite cubes with excellent edge zoning is artfully perched on a mounded matrix of lustrous, pastel yellow-green muscovite. The muscovite is festooned with tiny calcite rhombs. A really neat toenail.
6 x 3 x 1.2 cm. Outstanding pair of Stellerite spheres, the largest of which is 2.5 cm across. The luster is excellent, and they are gemmy enough to clearly distinguish the individual bladed crystals within the sphere. The color is a very nice medium brown, and the lovely terminated Calcites add greatly to the superb aesthetics of the piece. Note the very unusual and rare locality, from a zeolite deposit in this basin known for a famous meteorite impact in the early 1900s more than for its minerals. Ex. Charlie Key stock.
7.8 x 4.1 x 2.3 cm. A beautiful and delicate cluster of thin Manganoan calcite "straws" all oriented the same direction. The color is a nice shade of pink, the luster is very good, and, of course, the fluorescence is incredible. Ex. Charlie Key stock.
5.2 x 3.2 x 2.3 cm. A lovely and highly lustrous cluster of pink Manganoan calcite crystals in aesthetic balls. The fluorescence is eye-popping, as usual. Ex. Charlie Key stock.
3.5 x 2.0 x 1.5 cm. An extremely aesthetic, curved silver wire beautifully growing upward from the snow-white calcite on this very showy miniature from the famous early 1980s find at the New Nevada Mine at Batopilas, Mexico. Classic and exquisite material. The little plate of matrix on the calcite really sets this piece off.
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Rob Lavinsky, rob@irocks.com
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share specimen![Calcite from Mariposa Mine (California Mountain Mine), Terlingua District, Brewster Co., Texas, USA [db_pics/mdpics/MD-140463a.jpg]](db_pics/mdpics/MD-140463a.jpg)
![Descloizite, Calcite from Berg Aukas (Berg Aukus), Grootfontein District, Otjozondjupa Region, Namibia [db_pics/mdpics/MD-140483a.jpg]](db_pics/mdpics/MD-140483a.jpg)
![Calcite (Var: Cobaltoan Calcite) from Bou Azzer, Bou Azzer District, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco [db_pics/mdpics/MD-140485a.jpg]](db_pics/mdpics/MD-140485a.jpg)
![Pyrite, Calcite from Chenzhong (?), Hunan Province, China [db_pics/mdpics/MD-140493a.jpg]](db_pics/mdpics/MD-140493a.jpg)
![Fluorite, Calcite from Naica Mine, Naica, Mun. de Saucillo, Chihuahua, Mexico [db_pics/mdpics/MD-140499a.jpg]](db_pics/mdpics/MD-140499a.jpg)
![Calcite, Chlorite Group from Aurangabad District, Maharashtra, India [db_pics/mdpics/MD-140514a.jpg]](db_pics/mdpics/MD-140514a.jpg)
![Calcite, Quartz from Khandivali Quarry (Kandivali Quarry), Mumbai District (Bombay District), Maharashtra, India [db_pics/mdpics/MD-140516a.jpg]](db_pics/mdpics/MD-140516a.jpg)
![Calcite, Quartz from Khandivali Quarry (Kandivali Quarry), Mumbai District (Bombay District), Maharashtra, India [db_pics/mdpics/MD-140516b.jpg]](db_pics/mdpics/MD-140516b.jpg)
![Calcite from Shullsburg, Upper Mississippi Valley District, Lafayette Co., Wisconsin, USA [db_pics/mdpics/MD-140538a.jpg]](db_pics/mdpics/MD-140538a.jpg)
![Calcite from Shullsburg, Upper Mississippi Valley District, Lafayette Co., Wisconsin, USA [db_pics/mdpics/MD-140538b.jpg]](db_pics/mdpics/MD-140538b.jpg)
![Copper, Cuprite (Var: Chalcotrichite), Calcite, Quartz from Emke Mine, Ogonja (Onganja), Seeis, Windhoek District, Khomas Region, Namibia [db_pics/mdpics/MD-140636a.jpg]](db_pics/mdpics/MD-140636a.jpg)
![Calcite from Leiping Mine, Leiping, Guiyang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-142235a.jpg]](db_pics/mdpics/MD-142235a.jpg)
![Calcite from Leiping Mine, Leiping, Guiyang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-142235b.jpg]](db_pics/mdpics/MD-142235b.jpg)
![Fluorite, Calcite, Muscovite from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-142421a.jpg]](db_pics/mdpics/MD-142421a.jpg)
![Fluorite, Calcite, Muscovite from Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China [db_pics/mdpics/MD-142421b.jpg]](db_pics/mdpics/MD-142421b.jpg)
![Stellerite, Calcite from Nizhnyaya Tunguska River Basin (Lower Tunguska River), Evenkia (Evenkiyskiy Autonomous okrug), Krasnoyarsk Territory (Krasnoyarsk Kray; Krasnoyarskii Krai), Eastern-Siberian Region [db_pics/mdpics/MD-143052a.jpg]](db_pics/mdpics/MD-143052a.jpg)
![Stellerite, Calcite from Nizhnyaya Tunguska River Basin (Lower Tunguska River), Evenkia (Evenkiyskiy Autonomous okrug), Krasnoyarsk Territory (Krasnoyarsk Kray; Krasnoyarskii Krai), Eastern-Siberian Region [db_pics/mdpics/MD-143052b.jpg]](db_pics/mdpics/MD-143052b.jpg)
![Calcite (Var: Manganoan Calcite) from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-143064a.jpg]](db_pics/mdpics/MD-143064a.jpg)
![Calcite (Var: Manganoan Calcite) from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-143064b.jpg]](db_pics/mdpics/MD-143064b.jpg)
![Calcite (Var: Manganoan Calcite) from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-143202a.jpg]](db_pics/mdpics/MD-143202a.jpg)
![Calcite (Var: Manganoan Calcite) from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-143202b.jpg]](db_pics/mdpics/MD-143202b.jpg)
![Silver, Calcite from New Nevada Mine (Nevada Valenciana), Cerro San Antonio, San Miguel, Batopilas, Andres del Rio District, Mun. de Batopilas, Chihuahua, Mexico [db_pics/mdpics/MD-144893a.jpg]](db_pics/mdpics/MD-144893a.jpg)
![Silver, Calcite from New Nevada Mine (Nevada Valenciana), Cerro San Antonio, San Miguel, Batopilas, Andres del Rio District, Mun. de Batopilas, Chihuahua, Mexico [db_pics/mdpics/MD-144893b.jpg]](db_pics/mdpics/MD-144893b.jpg)