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Mineral Specimens with Elbaite
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9.7 x 5.5 x 3.8 cm. A very aesthetic, unusual specimen from this famous mine which had a great run in the years 1999-2006 or so, and has largely gone defunct since then (they blasted out the pegmatite on 3 sides). The matrix feldspar crystal is complete. It is terminated on both ends, the back, and the front where you see that gentle slope down decorated with sparkling purple lepidolite. Off the front-sloping face of the feldspar, hangs a 3.7 cm tall blue indicolite tourmaline. Although it has a hairline crack near its base, it is not repaired (the matrix held it together quite well).
4.1 x 0.9 x 0.9 cm (largest). A fine pair of gem tourmaline crystals from Paprok that are pretty much "classic" in design and coloration for this locality - with a bright green body and a glassy, gemmy pink tip. Also familiar is the multi-peaked termination. These two crystals could be classified as "watermelon" tourmalines with their pink cores at the base. Complete-all-around, with no damage. 6 and 4 grams or 10 grams total weight.
4.3 x 4.1 x 3.8 cm. This is a beautiful rosy pink tourmaline fragment, missing its top and (partially) re-healed on that broken termination. It is thus obviously significant as a colorful piece to display from the locality, more than for quality as a tourmaline per se. Coahuila tourmalines are rare, and seldom seen, and its an important locality from the old history books that was only rediscovered in the 1970s and worked sparsely after that. Weighs 125 grams. Ex. William Larson Collection.
5.7 x 5.0 x 4.6 cm. A strange, recrystallized tourmaline specimen that broke as it formed and then renewed growth from the breakpoint…A bizarre piece, but not ugly at all. In person, it looks like somebody squeezed a tourmaline-flower and the red goo inside blurted out the top. Very unusual tourmaline from anywhere. Old piece, from the 1960s. Ex. William Larson Collection.
2.9 x 2.5 x 2.5 cm. A very rare, old, Tourmaline King Mine tourmaline from this historic locality. Seldom do you see a valid example available, with the classic pink core, blue-grey zone atop, and characteristic lustre. This one is so gemmy you can look down into it from the top, through the glassy clear termination. Weighs 33 grams. Ex. William Larson Collection.
11.6 x 10.2 x 8.9 cm. This hillock of albite, stark white and bladed, hosts a 4 x 4 x 3 cm multicolored tourmaline crystal atop. It is, in person, fairly gemmy when backlit with even a half decent light. It has the classic purple zoning of some tourmalines from this mine, and excellent lustre. Although there is a crack in one lateral line through part of the tourmaline, it does not go through and the piece is unrepaired, as the albite held it solidly together. Matrix examples of these purple-capped Stewart pieces are uncommon and this is an excellent example. Weighs 1200 grams. Ex. William Larson Collection.
7.0 x 6.7 x 6.2 cm. A large, 640 -gram tourmaline crystal among the fatter ones I have seen from this locality, with a good form to it, and very little damage (mostly minor wear, to the back edges). As typical for the locality, these are dark, dark green. However they are translucent if you put a strong light to them. As with others, the top 5mm or so of this piece glow a diffuse olive green when strongly lit from above. Being fatter than others, the core here is also darker in proportion. Old material, now hard to obtain. Ex. William Larson Collection.
8.5 x 5.4 x 4.4 cm. A unique Little 3 Mine piece, as you never see tourmaline perched on quartz like this from there. Yet, this piece hosts a 4.5 x 2.5 x 2.5 cm deep green tourmaline, just sitting up there on the quartz. It has a very fine, smooth termination, and silky strands of green color, almost fibrous, running down the sides. This specimen is most unusual, for the tourmaline's gemminess and nice lustre, and for its perch. Ex. William Larson Collection.
4.9 x 4.8 x 4.4 cm. A 214-gram, very sharp and complete tourmaline from the Stewart Mine, with an identifying thin gem cap of blue color. It has to be backlit to see it - and this is admittedly a dark crystal, but it is there as a discrete layer atop the darker core. For the size and form, this is a good locality piece. Ex. William Larson Collection.
4.0 x 3.2 x 2.8 cm. A bizarrely sculpted tourmaline crystal that is complexly formed from etching effects in situ, into this cityscape form. It is a dark green color, but it is green, and the edges are gemmy when backlit. A great rarity for this small locality, and a very fascinating tourmaline in its own right, as well. Ex. William Larson Collection.
6.1 x 4.4 x 4.2 cm. A 230-gram, rare, rather large crystal for the locality. This crystal is translucent green when backlit, and really glows when backlit. For the locality, this is an excellent specimen. Ex. William Larson Collection.
4.5 x 1.9 x 1.2 cm. A beautiful cluster of bi-colored, pink and green tourmalines. This fine, uncommon and older specimen is from the Barra de Salinas pegmatites of Brazil. The crystals have high lustre, intense color saturations and the green portions of the crystals have excellent gemminess. The complex, black-tipped terminations are very interesting. Complete-all-around and nearly pristine. Exceptional color, gemminess and form for a Barra de Salinas tourmaline cluster. Weighs 15 grams.
3.0 x 1.4 x 1.1 cm. A beautiful, red-tip tourmaline from the much less well-known Poa Alta Mine of the Coronel Murta area of Minas Gerais. The contrast of the cranberry-red, modified, pyramidal termination over the green body is striking. Complete-all-around and pristine, this gemmy and lustrous crystal weighs 8 grams.
6.9 x 6.6 x 1.8 cm. A beautiful specimen from recent finds at the Pederneira Mine. Pearlescent florets of snow-white cleavelandite blades aesthetically surround a lustrous, cranberry and green tourmaline. The very sculptural quality and contrast of the cleavelandite against the tourmaline make for an excellent Pederneira combination specimen.
4.7 x 2.7 x 2.5 cm. A fine, gemmy and lustrous, green tourmaline crystal from Afghanistan. The striking, complex, pyramidal termination has striking flashes of yellow-gold, along with gorgeous green color saturation. Beautiful striations also accent this showy crystal. Weighs 57 grams.
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Rob Lavinsky, rob@irocks.com
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share specimen![Tourmaline (Var: Indicolite), Lepidolite, Feldspar Group from Pederneira claim, São José da Safira, Doce valley, Minas Gerais, Southeast Region, Brazil [db_pics/mdpics/MD-248017a.jpg]](db_pics/mdpics/MD-248017a.jpg)
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