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Mineral Specimens with Fluorite
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A relatively large, complex crystal of translucent fluorite for the mine. the piece is quite pretty in person and has a rich purple color to it. 3.8 x 3.5 x 2.2 cm
5 x 4.8 x 2 cm. A very nice single complex Fluorite crystal sitting on a plate of Quartz crystals. The gemmy, yellow-amber Fluorite is 1.9 cm across, and is an octahedron modified by stepped cubes, giving it the appearance of a Mayan pyramid. A very good Erongo piece of highly unusual habit. Ex. Charlie Key.
5.7 x 4.8 x 3 cm. A very nice plate of highly-modified Fluorite crystals with silky luster but gemmy interiors, intergrown with a few nice Quartz crystals. The Fluorites have the classic Erongo purple zoning along some of the edges and corners, and they average about 1.5 cm across. A very good, appealingly unusual specimen for this famous locality. Ex. Charlie Key.
3.7 x 3.1 x 2.8 cm. An excellent pair of cubic phantomed Fluorite, intergrown with Orthoclase. The largest crystal, a very impressive 3 x 2 x 2 cm, has the classic mix of almost iridescent green and deep purple that is classic, yet not that common, from the Erongo Mountains. Aesthetic and very fine. Ex. Charlie Key.
6.5 x 5.4 x 3.2 cm. A gorgeous cluster of four Fluorite octahedra from the famous new locality of Riemsvasmaak. The upper crystal is complete, and measures 3.3 cm on edge. The crystals are gemmy, and have a beautiful minty green color. Much of the crystals are covered with a sparkly drusy coating, with all the corners preferentially exposed. What look dark on the photo are really the exposed gemmy corners. This is an incredibly aesthetic specimen - even better in person. The coloration on the tips is also more appealing in person. Ex. Charlie Key.
26.0 x 17.5 x 10.0 cm. This is one of the largest such specimen I have seen of this now-classic material, called "raspberry fluorite" by many in the direct market. It is a pristine large plate with many sharp fluorites to about 3 cm in size. In good lighting, it glows with color. The shot here shows it in pretty moderate normal room lighting...in a case, it is far more intense. I have seen only a handful of specimens of this size and quality, trickling out over the last few years. I am told that this mine produces just a few small pockets now and then and is not very productive in the manner of the Hunan fluorite locales.
4.3 x 3.7 x 3.2 cm. The Cripple Creek District in Colorado was one of the most prolific Telluride producing mining districts in the United States. Telluride species from this area are highly sought after by collectors, and it is well justified as some superb examples are known from the various mines in the area. This specimen hosts a few small, excellent quality sharp, lustrous, tabular, striated, monoclinic crystals of the rare Gold Telluride, Calaverite which have a bronzy hue. The crystals have a classic association (for this mine) of purple Fluorite and are sitting against grey Quartz matrix on matrix. The largest Calaverite crystal measures a few mm in length which is typical for the species and the locality, but an association with purple Fluorite is not typical. These specimens are very difficult to obtain, and considering that the majority of them were mined over 100 years ago, the only source for specimens is old collections. Ex. Richard Kosnar Collection.
9.8 x 7.2 x 5.2 cm. A good-sized specimen of Fluorite from the Muzquiz area in Mexico. The cubic crystals, which measure up to 4.2 cm on edge, are essentially colorless internally, but have a rich purple hue on the exterior. There are hundreds of small stepped faces on the crystals, and the piece is gemmy when backlit.
For my taste, this may be the most aesthetic pyromorphite group I have seen from Chaillac. Start with a barite matrix and small yellow fluorites on the top right,then go to terraced shelves with bright grass green acicular groups of pyromorphites arranged like hanging baskets. True,the crystals are tiny but the whole effect is amazing! 5.6 x 4.0 x 2.5 cm
WOW! One so seldom sees a specimen from this famous find of 25 years or so ago, that at first I didn't even register what I was looking at! This is a fantastic example of the famous Peruvian pink fluorites , from a one-time important find in the fall of 1981. It features pale pink fluorite crystals that are so transparent you can see right through them to the matrix. They are sharply octohedral, to 2 cm in size. the association with crystallized pyrite is a very rare bonus, seldom seen in such close association with the pink fluorites and treasured all the more when found. This is a subtle specimen, and is much better in person. It is, to my mind, a very "elegant" and sculptural piece but this is hard to convey in the flat photos. 6.4 x 4.9 x 4.4 cm
A striking, fairly large interpenetration-twinned fluorite from this classic locality. Glassy lustre and rich purple color make it stand out. Under fluorescent light, it glows a vivid purple - no surprise since this is from the region that produced the fluorite which lent its name to the very term "fluorescence"! 6.2 x 4.8 x 4.6 cm
WOW! I think the pics say it all....this spectacular specimen is about the most phantomed fluorite you could ask for, with dozens of receding 3-dimensional internal phantoms of different shades of blue and purple. It is simply spectacular. Note also how the cluster of fluorites rests attractively on a plate of quartz, and is complete all around 360 degrees (damn near pristine, too!)! I got this from Ed David in a trade earlier in the year but it was a "fixer-upper" that needed to have about 2 pounds of ungainly matrix removed from it, and I only just got it back from the prep lab. So, it is not technically new from Munich but it is new to my inventory now, so here it is... 8.9 x 8.4 x 5.6 cm
4.7 x 4.5 x 2.5 cm. An interesting looking specimen of a 2.0 cm, radial aggregate of translucent, cream-colored strontianite perched atop a box-work limestone matrix covered with calcite and colorless fluorite microcrystals. The fluorite fluoresces purple and the strontianite has light-yellow fluorescence.
3.8 x 3.5 x 1.9 cm. A really nice and aesthetic combination specimen of absolutely limpid and beautiful, pastel-green fluorite cubes with highly lustrous, very light amber calcite disks from recent finds at the Xianghuapu Mine of China. The large fluorite cube is 1.4 cm and the large calcite is 2.2 cm. All of the fluorite cubes have very interesting, frosted, beveled edges and have the absolutely stunning, TV garden-effect, when you look into the fluorite cubes. This is contemporary classic combination material of excellent quality. Ex. Plavic and Lewadny Collections.
8.6 x 6.8 x 4.4 cm. An aesthetic and excellent fluorite specimen from the recent, very highly touted finds at Riemvasmaak, South Africa. Gemmy and lustrous, unique grass-green fluorite octahedrons to 5.1 cm are attractively clustered on the crust of solid crystallized fluorite. This specimen is essentially pristine. These are contemporary classics. The color is intense, deep green; very nice.
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Rob Lavinsky, rob@irocks.com
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