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Mineral Specimens with Calcite
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11.2 x 7.4 x 6.9 cm. These phantom calcites from Santa Eulalia have not been seen for around 40 years, so this recent find at the locality was especially exciting. They are really unique looking, with dark, coated crystals inside, and sometimes emerging out of, a later generation of translucent crystals with areas of coloration from hematite.
A really pretty and relatively uncommon Weardale specimen, featuring a ball of light yellow-tan calcite, complete all around, perched atop a matrix that is covered with gemmy little light purple fluorite cubes! 4.2 x 3.3 x 2.5 cm
9.5 x 7.3 x 5.9 cm. A rare, old and striking, large, twinned calcite crystal on calcite matrix from an old, Triassic traprock quarry in Edgewater, New Jersey. The classic, lustrous, translucent, twinned, pastel-yellow crystal is 6.2 cm across and is pristine. The prominent, lustrous twinning face has dramatic chevron striations. Ex. Gerald Kloc and Ed David Collections.
No mere druse, these are gemmy, finely-formed scalenohedral crystals to 0.7 cm lining a shallow pocket in the matrix. 6.5 x 5.8 x 4.5 cm
4.5 x 4.0 x 4.0 cm. An aesthetic combination specimen of gemmy, very glassy, clove-brown axinite crystals with razor-sharp edges beautifully accented with lustrous calcite rhombs and a bit of green chlorite. Ex. Ryan Bowling Collection.
5.5 x 3.3 x 2.6 cm. Two isolated, pseudocubic, lustrous and translucent, butterscotch-colored crystals of wulfenite, to 1.3 cm across are emplaced on an ocherous, limonite matrix. There are also a few crystals of pearly-lustrous, white, calcite, measuring .2 cm across.
5.9 x 3.6 x 2.7 cm. An ocherous, limonite is covered by lustrous, rhombohedral, silky/pearlescent-white crystals of calcite to .3 cm across, which give way to a small area of lustrous and translucent, botryoidal green mimetite. Emplaced on top are several, isolated lustrous and translucent, butterscotch-colored crystals of wulfenite, measuring 1.5 cm in length.
12.2 x 6.9 x 3.4 cm. Sharp pseudocubic crystals of lustrous and translucent, butterscotch-colored wulfenite, to 1.0 cm in length cover much of the matrix. A few of the wulfenite crystals are doubly terminated. Adding color contrast are unusually silky/lustrous, white calcite crystals to .25 cm across.
15.2 x 10.6 x 3.7 cm. A sharp complex crystal of about 1 inch, perched on matrix of small calcites, makes this a classic example from this old locality.
A little "gem", doubly-terminated, nearly a floater (you can see a tiny bit of sphalerite and barite on the back, where the tiny contact was). There is a bit of edge-wear on the two ends, but not bad, as you can see from the photo. 4.8 x 2.8 x 1.5 cm
11 x 8.4 x 5.2 cm. A very weird, airy specimen with fat, striated, brownish-gray calcites on which are perched little bubbly, faintly green smithsonite crystals.
A WHOPPER Elmwood twin with wonderful amber color and gemminess. It features a single termination on one end and a fabulous multi-peaked one on the other. The vast majority of even good Elmwood twins in this size range have damage on their tips, but the damage on this one is very minor: a little edge wear on a couple of the “peaks” on multi-peaked end, and a tiny, clean “chink” at the very edge of the other end. This minor damage is very hard to see or get worked up about relative to the size of the specimen. 14.4 x 8.5 x 5.5 cm
The best single crystal I have seen from these finds, a gorgeous scalenohedron with beautiful bevels and unusual transparency. These were considered an exciting find a few years back when only a few came out and appeared in a dealer''s dresser drawer at a hotel show. Then they came out in more abundance for a time, but once again they have dropped to a trickle. 7 x 2.8 x 2.6 cm
9.7 x 8.2 x 4.3 cm. A classic style of calcite from his historic locale, with stacked flat disc-shaped crystals measuring about 5 cm across, overall as a cluster.
These very beautiful calcite specimens have generally been rather dinky in size, but this is a large, very sculptural and fine one - a real exception. It features a perfect matrix, a natural "base" of dark green, which sets off the crystals perfectly (the largest is 9.5 cm). 9.5 x 6 x 5.5 cm
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Rob Lavinsky, rob@irocks.com
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share specimen![Calcite from Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico [db_pics/mdpics/MD-190201a.jpg]](db_pics/mdpics/MD-190201a.jpg)
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![Wulfenite, Calcite from San Juan Poniente, Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico [db_pics/mdpics/MD-190312a.jpg]](db_pics/mdpics/MD-190312a.jpg)
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![Calcite from Elmwood mine, Carthage, Central Tennessee Ba-F-Pb-Zn District, Smith Co., Tennessee, USA [db_pics/mdpics/MD-19038a.jpg]](db_pics/mdpics/MD-19038a.jpg)
![Calcite from Durango, Mexico [db_pics/mdpics/MD-19044a.jpg]](db_pics/mdpics/MD-19044a.jpg)
![Calcite from St Andreasberg, St Andreasberg District, Harz Mts, Lower Saxony, Germany [db_pics/mdpics/MD-190486a.jpg]](db_pics/mdpics/MD-190486a.jpg)
![Calcite from Iraí, Alto Uruguai region, Rio Grande do Sul, South Region, Brazil [db_pics/mdpics/MD-19049a.jpg]](db_pics/mdpics/MD-19049a.jpg)