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Mineral Specimens with Andradite
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5.7 x 2.8 x 2.7 cm. A fine example of the Gaudefroyite/Andradite/Baryte combinations from Black Rock Mine. The Gaudefroyites are superbly lustrous, and the largest of the crystals is .7 cm long. The deep-red Andradites provide a beautiful contrast. The Barytes, both large (1.7 cm) and small are concentrated along the bottom, and attractive. Ex. Charlie Key.
6.1 x 4.4 x 3.1 cm. Three richly colored, deep-green, partially gemmy Dematoid crystals on matrix. The largest is 1.2 cm, and the luster on all of them is excellent. A very good Demantoid Garnet from the heyday of mining here, hand-picked by Charlie over several decades of looking. Crystals of this size on matrix are rare and valued highly. Ex. Charlie Key.
6.2 x 2.9 x 2.4 cm. A plate of deep cherry-red Andradite Garnets from rare finds at the Wessels Mine. The Garnets, which are rare for this mine, have superb luster and range up to about 1 cm across. Ex. Charlie Key.
A study specimen of these species, ex Harvard. Typical massive, brick-red hancockite and golden-brown andradite with minor black franklinite. A study specimen in the museum. ex. Dr. Gary Hansen dealer stock and not shown since early 1980s. 4 x 3.6 x 2 cm
Very difficult to shoot, but this is a HUGE, lustrous compound crystal of garnet from Mexico. The faces are extremely sharp and lustrous, and these fine faces cover the entire display face (the back is a natural contact where removed from the matrix). 10.0 x 6.8 x 4.9 cm
9.2 x 5.2 x 3.9 cm. I have only seen a handful of these specimens over the years, and I always keep an eye out at shows for them because they're some of the better Demantoids outside of Europe/Russia in the world in my mind. This hand-sized display specimen hosts dozens of small, sharp, highly lustrous, gemmy, bright green slightly modified dodecahedral crystals of Andradite (var "Demantoid") on schist matrix. Please note that these crystals show a color change from a "mint green" color to a very rich "lime green" hue in different lighting. Under halogen lights, the crystals appear more pastel, but under mercury bulbs, the color is very intense. The beautiful color contrast on this piece is truly eye-catching, and it is not common to find cabinet sized specimens of this rare green Garnet.
6.9 x 3.9 x 3.6 cm. Sharp, gemmy and lustrous, olive-green andradite garnet crystals richly cover the mounded matrix on this excellent combination specimen from the Bor Pit at Dal’negorsk. The andradites have textbook dodecahedral form and reach 1.1 cm. One side of the specimen is festooned with tiny, prismatic hedenbergite crystals, making for a very fine combination specimen from this well-known locale. According to the label, the piece was collected in 2005.
4.4 x 4.3 x 2 cm. An exemplary plate of superb, lustrous Braunite crystals, accented by euhedral red-orange Andradite Garnets. The Braunites are super-sharp, range up to .6 cm long, and have a mirror-like luster. The numerous Andradites are about 1-1.5 mm in size, and add a stunning contrast to the dark mettalic Braunites. Without a doubt, a rare combination that is intellectually interesting and good for the species. Ex. Charlie Key.
4.4 x 4.2 x 3.5 cm. A quite remarkable combination piece from the Wessels mine. The gemmy 3.5 cm Calcite, which has excellent luster and deep orange-red fluorescence in the core, is seemingly impaled on a super-lustrous, complex 4 cm Hematite. Exceptional and unusual. For color and interest, there is a layer of brilliant micro Andradites that create a sparkly druse on the Hematite. The stark symmetry is dramatic, as well. Ex. Charlie Key.
3.8 x 3.7 x 3.5 cm. A superb combination piece of highly lustrous Manganvesuvianite along with brilliant red Andradite Garnets. The surface is completely coated with mirror-like Manganvesuvianites, the largest of which is a sharp blocky crystal about 1 cm long and an incredible .4 cm across. The vivid red Andradites provide a beautiful contrast. Very Aesthetic and sparkling, but more than that a significant example of this vesuvianite species. Ex. Charlie Key.
5.5 x 4.8 x 2 cm. A beautiful combination of deep-red, lustrous Andradites, mirror-like Hematites, and gem-clear Calcites. The best Hematite has a superb, lustrous face 1 x 1 cm, and it is draped incredibly by a layer of Garnets, like a shawl. The largest of the gemmy Calcites is about 1.3 cm long and sits right in front of the largest and best Hematite. All draped, in part, by all these great 1-2 mm Andradites. Ex. Charlie Key.
5.5 x 4.6 x 2.2 cm. A superb example of the Gaudefroyite/Andradite/Baryte combinations from Black Rock Mine. The Gaudefroyites are lustrous, and the largest of the crystals is a full 1 cm long. The brilliant red Andradites provide a beautiful contrast. The Barytes add a nice contrast, as well. Ex. Charlie Key.
3.9 x 2.0 x 1.7 cm. An impressive, complete-all-around and pristine stalactite of sharp, lustrous andradite garnet crystals from a smaller mining district near Dalnegorsk (and often confused with it). These are so lustrous they look like carved leaded glass...shocking for a locality where crystals are usually somewhat dull. This is the only stalactite I have seen. This excellent piece was for many years part of the Pala Properties/Bill Larson Garnet Collection and was on display at the Fallbrook shop. Once misidentified as almandine when they came out in the early 1990s.
6.9 x 6.8 x 2.8 cm. I have only seen a handful of these specimens over the years, and I always keep an eye out at shows for them because they're some of the better Demantoids outside of Europe/Russia in the world in my mind. This hand-sized display specimen hosts dozens of small, sharp, highly lustrous, gemmy, bright green modified dodecahedral crystals of Andradite (var "Demantoid") on schist matrix. PLEASE NOTE that these crystals show a color change from a "mint green" color to a very rich "lime green" hue in different lighting. Under halogen lights, the crystals appear more pastel, but under mercury bulbs, the color is very intense.
3.4 x 2.0 x 1.9 cm. Sharp, lustrous, translucent, apple-green demantoid garnet crystals richly and attractively cover matrix on this very fine specimen from an uncommon locality in the Ural Mountains of Russia - Kakodino. The crystals reach 1.3 cm.
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Rob Lavinsky, rob@irocks.com
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share specimen![Gaudefroyite, Andradite, Baryte from Black Rock Mine, Black Rock, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-244343a.jpg]](db_pics/mdpics/MD-244343a.jpg)
![Gaudefroyite, Andradite, Baryte from Black Rock Mine, Black Rock, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-244343b.jpg]](db_pics/mdpics/MD-244343b.jpg)
![Gaudefroyite, Andradite, Baryte from Black Rock Mine, Black Rock, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-244343c.jpg]](db_pics/mdpics/MD-244343c.jpg)
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![Andradite (Var: Demantoid) from Tubussis 22 farm (Tubussis; Tubusis; Tubessis), Karibib District, Erongo Region, Namibia [db_pics/mdpics/MD-244355b.jpg]](db_pics/mdpics/MD-244355b.jpg)
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![Andradite (Var: Demantoid) from Ghazni (Gazni) Province, Afghanistan [db_pics/mdpics/MD-249073b.jpg]](db_pics/mdpics/MD-249073b.jpg)
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![Andradite, Hematite, Calcite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-251477a.jpg]](db_pics/mdpics/MD-251477a.jpg)
![Andradite, Hematite, Calcite from Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-251477b.jpg]](db_pics/mdpics/MD-251477b.jpg)
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![Gaudefroyite, Andradite, Baryte from Black Rock Mine, Black Rock, Kalahari manganese fields, Northern Cape Province, South Africa [db_pics/mdpics/MD-251508c.jpg]](db_pics/mdpics/MD-251508c.jpg)
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![Andradite (Var: Demantoid) from Ghazni (Gazni) Province, Afghanistan [db_pics/mdpics/MD-252690b.jpg]](db_pics/mdpics/MD-252690b.jpg)
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