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Mineral Specimens with Calcite
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9.1 x 6.8 x 2.6 cm. A druse of pastel-green, translucent prehnite has replaced tabular, well formed crystals of calcite to 4.5 cm across. Highly aesthetic, and stark in its form, this is a fine example of this rare Indian pseudomorph style. All of this is on a thin crust of matrix that has also been changed to prehnite.
2.5 x 2.5 x 2.5 cm. A splendid calcite from one of the U.S.’s best calcite localities. This amber-colored highly-modified crystal sits on a small amount of matrix, and is a full 2 cm across. Perhaps the most telling feature is that the faces range from those that exhibit a delicate rippled/frosted appearance to those that are window-clear. Take a peak into those, and you will see that the entire crystal is gem-clear. Amazing. Ex. Wendell E. Wilson Collection.
6.0 x 3.5 x 2.5 cm. On a matrix of tiny, colorless stilbite crystals, is a rosette of lustrous, translucent, deep teal-blue cavansite which is 2 cm across. Additionally, on the stilbite, there are a couple of gemmy, yellow calcites, to .5 cm across.
3.4 x 3.2 x 2.6 cm. This unusual specimen exhibits three generations of mineral, staring with a matrix of tan, drusy stilbite, upon which grew a cluster of royal blue cavansite measuring 1.5 cm in length. Encrusting the cavansite is a generation of colorless, gemmy calcite crystals, to .2 cm across. This latter encrustation gives the underlying cavansite a strange, candy-coating effect.
Sharp little sprays of actinolite crystals growing right on gemmy rhombs of calcite! All perched on a matrix covered with a bed of velvety actinolite. Elegant and unusual! 5.2 x 4.6 x 3.9 cm
A tall, slender clinozoisite crystal spiked right through a crystal of calcite (of course, it was the calcite that grew around the clinozoisite, in reality). GEMMY and wonderful! 4.9 x 1.4 x 0.9 cm
A SUPERB, pristine and very lustrous calcite crystal included with hematite and aesthetically perched on matrix from Tsumeb. The quality of this piece is outstanding, as the backside of the calcite crystal is only partially included with hematite and is transparent. From the Ed David Collection 5.3 x 4.1 x 3.2 cm
6.8 x 6.7 x 3.0 cm. The quarry at Upper New Street is over 100 years old (it opened in 1893). During the mid 1980's to early 1990's, there was a lot of collecting that took place between the Upper New Street and Lower Street Quarries in an area that is affectionately referred to by some as "Middle New Street". The majority of the specimens from this area are still labeled as being found at Upper New Street even though they were not found in the quarry itself. Nonetheless, this is one of the most famous Trap Rock quarries in New Jersey and is probably most famous for its amazing and unique Prehnite casts after Anhydrite (sometimes called "fingers" or "snakeheads"). This specimen does not feature any casts, but rather a pair of beautiful bright apple green spherical aggregates Prehnite with Calcite sitting on basalt matrix. This specimen is actually from a recent find, and has some of the finest color Prehnite that you'll see from any quarry in New Jersey. Ex. Brian 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.
9.3 x 7.34 x 3.6 cm. For some time, "Endlichite" was considered a species, but is now classified as an Arsenic-bearing variety of Vanadinite. This lovely specimen hosts hundreds of classic, silvery, almost metallic looking, thin prismatic crystals of "Endlichite" on rhombohedral Calcite matrix. The "Endlichite" crystals have a light curve to them, which is very distinctive for this mine. A very graceful specimen, and virtually damage free on the display side. Ex. Brian Kosnar Collection.
3.3 x 3.3 x 2.5 cm. Several small, sharp, sparkling, bright, elongated, dendritic Silver crystals sit atop a matrix of white Calcite. This specimen came out recently when a local collector was able to liberate some specimens from the dumps of this historic mine. The Balcoll Mine was worked as far back as the middle ages, so the fact that anything remained (even on the dumps) is amazing. A fine specimen with great character and aesthetics. Ex. Brian Kosnar Collection.
11.0 x 9.5 x 5.0 cm. A very aesthetic, old-time, cabinet calcite specimen from the famed Tri-State District and the George Feist Collection. Beautiful, highly lustrous, glassy, amber calcite comprise this very fine piece. Some of the crystals are doubly terminated, including the largest ones, which are up to 9.2 cm. The terminations are particularly gemmy. According to a note on the back of the former dealer label, this specimen was also in the Florence Mecke Collection, ca. 1930-1970.
4.4 x 3.4 x 2.6 cm. A fine, old-time, combination specimen from the famous mines at Bisbee. Frosted, colorless calcite scalenohedrons, many doubly terminated, richly and aesthetically cover the 3-dimensional matrix of hackly copper, which includes spinel-twins and uncommon twisted copper wires. Ex. Dennis Mullane Bisbee Collection.
4.4 x 3.4 x 1.9 cm. A superb and aesthetic vanadinite specimen from the classic, but now hard to obtain source of the San Carlos Mine of Chihuahua, Mexico. Sharp, isolated, elongated, orange vanadinite prisms to 1.2 cm strikingly cover the gossan crust and are seriously complimented by the starkly contrast calcite. I particularly like the way the largest crystals are at the top of the piece. These came out in the 1970s and 1970s, with none since. Ex. Jaime Bird Collection.
A large, gorgeous specimen of light pink manganoan calcite, with fine luster and sharp faces. Deep pink color! Fluorescent red-orange. 12.5 x 9.5 x 5.5 cm
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Rob Lavinsky, rob@irocks.com
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share specimen![Prehnite, Calcite from Aurangabad District, Maharashtra, India [db_pics/mdpics/MD-262360a.jpg]](db_pics/mdpics/MD-262360a.jpg)
![Calcite from Berry Materials Corp. Quarry (North Vernon Plant), North Vernon, Jennings Co., Indiana, USA [db_pics/mdpics/MD-262514a.jpg]](db_pics/mdpics/MD-262514a.jpg)
![Cavansite, Calcite, Stilbite-Ca from Wagholi Quarry, Wagholi, Pune District (Poonah District), Maharashtra, India [db_pics/mdpics/MD-262603a.jpg]](db_pics/mdpics/MD-262603a.jpg)
![Cavansite, Calcite, Stilbite-Ca from Wagholi Quarry, Wagholi, Pune District (Poonah District), Maharashtra, India [db_pics/mdpics/MD-262608a.jpg]](db_pics/mdpics/MD-262608a.jpg)
![Actinolite, Calcite from Alchuri (Alchori; Aschudi), Shigar Valley, Skardu District, Baltistan, Northern Areas, Pakistan [db_pics/mdpics/MD-26263a.jpg]](db_pics/mdpics/MD-26263a.jpg)
![Clinozoisite, Calcite from Tormiq valley (Tormic; Tormik; Tormig; Turmiq), Haramosh Mts., Skardu District, Baltistan, Northern Areas, Pakistan [db_pics/mdpics/MD-26285a.jpg]](db_pics/mdpics/MD-26285a.jpg)
![Calcite, Hematite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-26306a.jpg]](db_pics/mdpics/MD-26306a.jpg)
![Prehnite, Calcite from Upper New Street Quarry (Burger's Quarry), Paterson, Passaic Co., New Jersey, USA [db_pics/mdpics/MD-263189a.jpg]](db_pics/mdpics/MD-263189a.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)
![Vanadinite (Var: Endlichite), Calcite from Erupción Mine (Ahumada Mine; Erupción-Ahumada Mine), Los Lamentos Mts (Sierra de Los Lamentos), Mun. de Ahumada, Chihuahua, Mexico [db_pics/mdpics/MD-263198a.jpg]](db_pics/mdpics/MD-263198a.jpg)
![Vanadinite (Var: Endlichite), Calcite from Erupción Mine (Ahumada Mine; Erupción-Ahumada Mine), Los Lamentos Mts (Sierra de Los Lamentos), Mun. de Ahumada, Chihuahua, Mexico [db_pics/mdpics/MD-263198b.jpg]](db_pics/mdpics/MD-263198b.jpg)
![Silver, Calcite from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-263207a.jpg]](db_pics/mdpics/MD-263207a.jpg)
![Silver, Calcite from Balcoll Mine, Falset, Priorat, Tarragona, Catalonia, Spain [db_pics/mdpics/MD-263207b.jpg]](db_pics/mdpics/MD-263207b.jpg)
![Calcite from Joplin Field, Tri-State District, Jasper Co., Missouri, USA [db_pics/mdpics/MD-264008a.jpg]](db_pics/mdpics/MD-264008a.jpg)
![Calcite, Copper from Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA [db_pics/mdpics/MD-264032a.jpg]](db_pics/mdpics/MD-264032a.jpg)
![Calcite, Copper from Bisbee, Warren District, Mule Mts, Cochise Co., Arizona, USA [db_pics/mdpics/MD-264032b.jpg]](db_pics/mdpics/MD-264032b.jpg)
![Vanadinite, Calcite from San Carlos Mine (Apex mine), San Carlos, Mun. de Manuel Benavides, Chihuahua, Mexico [db_pics/mdpics/MD-264036a.jpg]](db_pics/mdpics/MD-264036a.jpg)
![Vanadinite, Calcite from San Carlos Mine (Apex mine), San Carlos, Mun. de Manuel Benavides, Chihuahua, Mexico [db_pics/mdpics/MD-264036b.jpg]](db_pics/mdpics/MD-264036b.jpg)
![Calcite (Var: Manganoan Calcite) from Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Primorskiy Kray, Far-Eastern Region, Russia [db_pics/mdpics/MD-26404a.jpg]](db_pics/mdpics/MD-26404a.jpg)