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Mineral Specimens with Gypsum
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14.8 x 3.0 x 2.9 cm. This unique Australian specimen hardly looks real! It is a stalactite covered with gemmy crystals of selenite, which have been tinted this gorgeous grass green from copper.
11.9 x 6.9 x 4.3 cm. Uncommon on the market - a plate of Austrian selenite twins, to 5 cm (but most more like 3 cm). The crystals are translucent, with a brown/tan color reminiscent of certain Bad Ems pyromorphites. The specimen is in FINE condition, despite the fragility of selenite crystals.
10.3 x 8.5 x 4.4 cm. A burst of gemmy selenite crystals, shooting out in all directions, from Whyalla. What makes this specimen special, in addition to its remarkable appearance, is that while some species form crystals in thousands of years, these particular selenites form in a matter of only around TWO WEEKS - sort of like those experiments with salt crystals on a string you did when you were a kid.
15.4 x 1.6 x 1.5 cm. An undamaged stalactite of caramel-colored, sparkling selenite crystals, from the famed selenite locality of Naica, which has produced fine specimens of this mineral in so many different forms.
7.9 x 6.5 x 5.1 cm. Razor-sharp crystals of super-transparent selenite, stacked aesthetically side by side with their terminations at various levels. The structure of this specimen makes it really special.
8.9 x 6.4 x 5.8 cm. A LARGE ball of twinned crystals of selenite, with several super-gemmy crystals having grown out prominently from the others. The largest of these is over 3.5 cm in each direction! These formed in the clay beds of the Red River Floodway near Winnipeg, as floater balls of crystals.
6.5 x 5.0 x 1.5 cm. This rare and colorful uranium mineral is emplaced on matrix with contrasting white selenite and features glassy, translucent, lemon yellow crystal sprays reaching 6mm across amidst the selenite. It is a very attractive, high quality specimen from this locality which has produced best of species so far as I know. Carlos Barbosa brought most of them out in the late 1990s and only rarely does a good piece turn up on the market nowadays.
4.4 x 4.2 x 3.5 cm. This selenite crystal looks like it came out of a textbook on crystal forms! It is not from Naica, "the" selenite locality, but a much more uncommon crystal from Australia, out of the collection of Carlton Davis.
6.5 x 5.6 x 1.9 cm. Haiweeite is one of the more attractive of the non-African suite of radioactives containing uranium, and remains a rarity known in good crystals from but a few locales. This is a very rare, hydrated, calcium, uranium, silicate. Extremely colorful and rarely ever seen in dealers stocks. This is a large and rich specimen of the material. It came out about 6 years ago. Tim Blackwood Collection.
7.5 x 7 x 6 cm. This is a floater cluster of super-gemmy twinned crystals of selenite, from Poland, ex. Marty Zinn collection. These fine crystals are far more transparent in person, and have a light golden color. Despite the softness of this mineral, this specimen is in fabulous condition – and is REALLY striking and aesthetic.
6.4 x 5.4 x 4.4 cm. These pretty Mexican selenites are called "ram’s horn" for obvious reasons. This is a complete floater, with a pretty curl at one end and coming to a point at the other. Ex. Carlton Davis Collection.
4.4 x 2.9 x 1.8 cm. A fascinating pseudomorph of gypsum that has replaced the original glauberite crystal, retaining razor-sharp form - the result looking like something man-made or a crystal model in a textbook! It is a pristine floater. This is an old and very unusual Arizona specimen.
This Photo was Mindat.org Photo of the Day - 12th Oct 2009
5.9 x 4.2 x 3.5 cm. This is a floater of intergrown selenite crystals with "hourglass" shaped inclusions of sand inside, peculiar to this locality. No contacts - a pristine floater specimen. Ex. Carlton Davis Collection.
6.3 x 2.4 x 2.4 cm. Another fine Carlton Davis selenite specimen, this one from Canada, an old specimen accompanied by a Wards label. The crystal, like many in the Davis collection, has textbook form, and it has wonderful clarity as well.
4.4 x 3.2 x 2.5 cm. Rarely do you see a Gypsum specimen from Tsumeb with this kind of visual appeal. The crystal has good form, a fine silky luster, and is set Ex. Willy Israel Collection.
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Rob Lavinsky, rob@irocks.com
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share specimen![Gypsum (Var: Selenite) from Pernatty Lagoon, Mt Gunson, Stuart Shelf area, Andamooka Ranges - Lake Torrens area, South Australia, Australia [db_pics/mdpics/MD-164942a.jpg]](db_pics/mdpics/MD-164942a.jpg)
![Gypsum (Var: Selenite) from Ebensee, Gmunden, Upper Austria, Austria [db_pics/mdpics/MD-164952a.jpg]](db_pics/mdpics/MD-164952a.jpg)
![Gypsum (Var: Selenite) from Whyalla, Eyre Peninsula, South Australia, Australia [db_pics/mdpics/MD-164953a.jpg]](db_pics/mdpics/MD-164953a.jpg)
![Gypsum (Var: Selenite) from Naica, Mun. de Saucillo, Chihuahua, Mexico [db_pics/mdpics/MD-165709a.jpg]](db_pics/mdpics/MD-165709a.jpg)
![Gypsum (Var: Selenite) from Santo Domingo Mine, Francisco Portillo, West Camp, Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico [db_pics/mdpics/MD-166780a.jpg]](db_pics/mdpics/MD-166780a.jpg)
![Gypsum (Var: Selenite) from Red River Floodway, Winnipeg, Manitoba, Canada [db_pics/mdpics/MD-168695a.jpg]](db_pics/mdpics/MD-168695a.jpg)
![Haiweeite, Gypsum (Var: Selenite) from Perus, São Paulo, São Paulo, Southeast Region, Brazil [db_pics/mdpics/MD-169928a.jpg]](db_pics/mdpics/MD-169928a.jpg)
![Gypsum (Var: Selenite) from Lake Gilles, Corunna Station, Lake Gairdner - Gawler Ranges area, South Australia, Australia [db_pics/mdpics/MD-170716a.jpg]](db_pics/mdpics/MD-170716a.jpg)
![Haiweeite, Gypsum (Var: Selenite) from Perus, São Paulo, São Paulo, Southeast Region, Brazil [db_pics/mdpics/MD-171826a.jpg]](db_pics/mdpics/MD-171826a.jpg)
![Haiweeite, Gypsum (Var: Selenite) from Perus, São Paulo, São Paulo, Southeast Region, Brazil [db_pics/mdpics/MD-171826b.jpg]](db_pics/mdpics/MD-171826b.jpg)
![Gypsum (Var: Selenite) from Piła, Wielkopolskie, Poland [db_pics/mdpics/MD-172003a.jpg]](db_pics/mdpics/MD-172003a.jpg)
![Gypsum (Var: Selenite) from Chihuahua, Mexico [db_pics/mdpics/MD-172279a.jpg]](db_pics/mdpics/MD-172279a.jpg)
![Gypsum, Glauberite from Camp Verde, Camp Verde District, Yavapai Co., Arizona, USA [db_pics/mdpics/MD-172282a.jpg]](db_pics/mdpics/MD-172282a.jpg)
![Gypsum (Var: Selenite) from Great Salt Plains, Jet, Alfalfa Co., Oklahoma, USA [db_pics/mdpics/MD-172285a.jpg]](db_pics/mdpics/MD-172285a.jpg)
![Gypsum (Var: Selenite) from Willow Creek, Nanton, Alberta, Canada [db_pics/mdpics/MD-172287a.jpg]](db_pics/mdpics/MD-172287a.jpg)
![Gypsum from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-174224a.jpg]](db_pics/mdpics/MD-174224a.jpg)