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Mineral Specimens with Gypsum
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10.8 x 7.4 x 4.9 cm. This is a very unusual and pretty specimen of selenite from Australia. It formed in two generations as an evaporate from a pool of gypsum-rich water that was run-off from sedimentary bedrock - first, as yellow crystals, and later, as superimposed orange ones. Beautiful!
12.7 x 6.2 x 6.2 cm. Classic Selenite from one of the world’s finest localities. This cluster, on matrix, has three large distinct crystals. All are gemmy and lustrous. The largest, which runs the entire length on the specimen, is a lovely fishtail twin.
27.9 x 6.2 x 4.8 cm. This is a very large selenite "sword" from Mexico, really superb in many ways. For one thing, it has wonderful clarity, almost quartz-like. It also has elegant form, tapering gently to a pointy termination.
3.2 x 2.5 x 1.9 cm. An EXQUISITE and AESTHETIC cluster of glassy, water-clear gypsum crystals from an UNCOMMON Canadian locality - Willow Creek, Alberta. The crystals are so sharp, they look faceted. Beautiful material from the Marty Lewadny Collection.
12.5 x 10.5 x 6.0 cm. Kottigite is a VERY RARE mineral from the famous Mina Ojuela and this showy CABINET combo specimen has at least 10 sprays of lustrous, grayish blue kottigite associated with a centrally located, 5.5cm, water-clear selenite on botryoidal mimetite-coated gossan matrix. Kottigite is related to legrandite, of which, Mina Ojuela is renowned. From the stock of Ed Swoboda. The last major find of kottigite at Mina Ojuela was in 1974 and remains a classic that is difficult to acquire in fine specimens.
17.5 x 11.0 x 10.5 cm. A DRAMATIC, LARGE CABINET fishtail-twinned selenite specimen on a bit of silicified limestone matrix from Naica, Mexico. The upright fishtail is 10.3 cm wide and 7.5 cm high. These colorless and translucent selenites are a Mexican classic. Old dealer stock of Dr. Gary Hansen from the 1970s or early 80s.
5.6 x 3.6 x 2.8 cm. Two gemmy twinned crystals of gypsum (selenite) shoot out from a central ball of gypsum. These super-distinctive gypsum specimens are floaters that are mined in ancient clay beds in the Red River Floodway of Manitoba and are highly sought after.
Wow! Wonderfully unique specimen featuring a 1.5 cm perfect xonotlite preserved like a fly in amber inside selenite that overlaid it. Other xonotlite balls stick out the side. 4.8 x 4.2 x 2.2 cm
15.6 x 9.4 x 7.8 cm. A large and spectacular example of the incredible glassy-transparent selenites from Naica - with over a DOZEN terminations! There are a few tip bruises, which are extremely common on these since they are very, very soft (2 on the Mohs scale). But they are as clear as glass - you can read through the largest crystal with no distortion even though it is 3.5 cm thick!
5.9 x 4.3 x 3.3 cm. An UNCOMMON, showy and excellent combination specimen from the Marty Zinn Collection of glassy and gemmy, light lavender creedite crystals nicely scattered on colorless selenite blades on a bit of matrix from Santa Eulalia, Mexico. Unusual and classic material, very nearly pristine. Ex. Martin Zinn Collection.
15.5 x 9.5 x 4.2 cm. A DRAMATIC, OLD-TIME and very fine LARGE CABINET specimen of large vug beautifully lined with sparkly tufts of salmon-pink natrolite and nicely accented by platy gypsum and calcite rhombs on this showy piece from a CLASSIC Czech locality - Aussig, Bohemia. Ex. George Elling Collection.
7.3 x 4.4 x 1.0 cm. A VERY FINE specimen of bright, micro-dendritic copper in a TERMINATED transparent gypsum cleavage from the Mission Mine of Arizona. OLD and very choice material, which comes with a 1960s-70s-era Styrofoam base with a pinned label. Such windowpane slices are almost never available, ESPECIALLY a terminated one! In person, looking at the internal meshwork, you can see how mesmerizing this is and why it is such a classic. Ex. George Elling Collection. VERY neat piece!
8.0 x 3.6 x 3.3 cm. Belgium is just not known for collector-quality specimens of ANY kind. This is a cluster of gypsum (selenite) crystals, with one large anchoring crystal, vaguely reminiscent of those from the Red River Floodway in Canada. As with those, the cluster is a complete floater, and the termination is intact.
10.8 x 9.8 x 6.0 cm. A UNIQUE and DRAMATIC herringbone-shaped CABINET cluster of lustrous and translucent, light brown gypsum blades. The cluster looks like a Christmas tree and the blades reach 6.7 cm. The rich dusting of tiny, pastel-pink, second-generation gypsum crystals are a beautiful accent. Very nearly pristine, with only a few lightly bruised termination edges. This super showy piece hails from the well-known South Australian locality of Sinclairs Gap Lake. One of the best evaporite gypsums, that I have seen from any locality.
6.1 x 4.7 x 3.8 cm. Now here is a rare American pseudomorph! What you have is tan-colored, sheety selenite that has been pseudomorphed by forest-green malachite. In places, small hollow "fingers" have formed. A unique Utah specimen you just do not see on the market.
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Rob Lavinsky, rob@irocks.com
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share specimen![Gypsum (Var: Selenite) from Whyalla, Eyre Peninsula, South Australia, Australia [db_pics/mdpics/MD-113676a.jpg]](db_pics/mdpics/MD-113676a.jpg)
![Gypsum (Var: Selenite) from Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico [db_pics/mdpics/MD-118705a.jpg]](db_pics/mdpics/MD-118705a.jpg)
![Gypsum (Var: Selenite) from Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico [db_pics/mdpics/MD-118777a.jpg]](db_pics/mdpics/MD-118777a.jpg)
![Gypsum (Var: Selenite) from Willow Creek, Nanton, Alberta, Canada [db_pics/mdpics/MD-118852a.jpg]](db_pics/mdpics/MD-118852a.jpg)
![Köttigite, Gypsum (Var: Selenite), Mimetite from Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico [db_pics/mdpics/MD-119620a.jpg]](db_pics/mdpics/MD-119620a.jpg)
![Köttigite, Gypsum (Var: Selenite), Mimetite from Ojuela Mine, Mapimí, Mun. de Mapimí, Durango, Mexico [db_pics/mdpics/MD-119620b.jpg]](db_pics/mdpics/MD-119620b.jpg)
![Gypsum (Var: Selenite) from Red River Floodway, Winnipeg, Manitoba, Canada [db_pics/mdpics/MD-120190a.jpg]](db_pics/mdpics/MD-120190a.jpg)
![Xonotlite, Gypsum (Var: Selenite), Inesite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-120653a.jpg]](db_pics/mdpics/MD-120653a.jpg)
![Gypsum (Var: Selenite) from Naica, Mun. de Saucillo, Chihuahua, Mexico [db_pics/mdpics/MD-121225a.jpg]](db_pics/mdpics/MD-121225a.jpg)
![Creedite, Gypsum (Var: Selenite) from Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico [db_pics/mdpics/MD-132379a.jpg]](db_pics/mdpics/MD-132379a.jpg)
![Creedite, Gypsum (Var: Selenite) from Santa Eulalia District, Mun. de Aquiles Serdán, Chihuahua, Mexico [db_pics/mdpics/MD-132379b.jpg]](db_pics/mdpics/MD-132379b.jpg)
![Natrolite, Gypsum, Calcite from Ústí nad Labem (Aussig), Ústí Region, Bohemia (Böhmen; Boehmen), Czech Republic [db_pics/mdpics/MD-133446a.jpg]](db_pics/mdpics/MD-133446a.jpg)
![Natrolite, Gypsum, Calcite from Ústí nad Labem (Aussig), Ústí Region, Bohemia (Böhmen; Boehmen), Czech Republic [db_pics/mdpics/MD-133446b.jpg]](db_pics/mdpics/MD-133446b.jpg)
![Copper, Gypsum from Mission Mine (Mission underground mine), Mission complex, San Xavier, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, [db_pics/mdpics/MD-133524a.jpg]](db_pics/mdpics/MD-133524a.jpg)
![Copper, Gypsum from Mission Mine (Mission underground mine), Mission complex, San Xavier, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, [db_pics/mdpics/MD-133524b.jpg]](db_pics/mdpics/MD-133524b.jpg)
![Gypsum from Niel, Antwerp, Antwerp Province, Belgium [db_pics/mdpics/MD-137552a.jpg]](db_pics/mdpics/MD-137552a.jpg)
![Gypsum from Niel, Antwerp, Antwerp Province, Belgium [db_pics/mdpics/MD-137552b.jpg]](db_pics/mdpics/MD-137552b.jpg)
![Gypsum from Sinclairs Gap Lake, Middleback Range, Eyre peninsula, South Australia, Australia [db_pics/mdpics/MD-137964a.jpg]](db_pics/mdpics/MD-137964a.jpg)
![Malachite, Gypsum (Var: Selenite) from Apex Mine (Dixie Mine; Utah-Eastern Mine; Dixie-Apex; Pen), Jarvis Peak, Tutsagubet District, Beaver Dam Mts, Washington Co., Utah, USA [db_pics/mdpics/MD-139283a.jpg]](db_pics/mdpics/MD-139283a.jpg)
![Malachite, Gypsum (Var: Selenite) from Apex Mine (Dixie Mine; Utah-Eastern Mine; Dixie-Apex; Pen), Jarvis Peak, Tutsagubet District, Beaver Dam Mts, Washington Co., Utah, USA [db_pics/mdpics/MD-139283b.jpg]](db_pics/mdpics/MD-139283b.jpg)