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Mineral Specimens with Fluorite
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17.7 x 14.2 x 12.1 cm. This very sculptural specimen of stacked fluorite crystals is on a knob of limestone. The crystals are slightly frosted with very gemmy corners. The crystals are twinned, and exhibit both emerald green and rich purple colors even in daylight (from the slight UV rays they catch and fluoresce to). The largest crystal measures 3.5 cm across. Rarely do you get such a LARGE specimen with no damage of note and such good coverage, in fact 360-degrees around?! The total visual impact/effect of this large specimen is really amazing. Historically, there just is not much available of this size and quality.
10.9 x 8.1 x 5.3 cm. Silicified limestone with a druse of sparkling white quartz is the matrix for a wonderful assemblage! This piece and others here feature some of the best unaltered galena I have yet seen from Bingham, and were collected by Ray DeMark on his claims in the area in the summer of 2007. This piece shows off frosted, translucent, lavender colored fluorite crystals to 1.6 cm across. Emplaced on the fluorite is a startlingly contrasting cluster of lustrous , metallic- gray, galena crystals which individually reach 3.25 cm across and look as if they were just "put on" and left to dry. They look fresh and bright, unaltered to anglesite as are most galenas I have seen from this area. They are remarkably freestanding.
11.5 x 10.7 x 8.9 cm. Intergrown cubes of intensely lavender, translucent, fluorite, to 1.75 cm across, completely cover a white quartz druse which in turn, is emplaced on a matrix of siliceous limestone. Aesthetically perched on some of the fluorite crystals are cubes of lustrous, battleship gray, galena, to 1.5 cm across. The contrast is stark and striking, and also highly unusual for the mine! They look fresh and bright, unaltered to anglesite as are most galenas I have seen from this area. This piece and others here feature some of the best unaltered galena I have yet seen from Bingham, and were collected by Ray DeMark on his claims in the area in the summer of 2007.
9.2 x 6.3 x 4.2 cm. A sparkling bright druse of white quartz upon which is emplaced several crystals of intensely colored, translucent crystals of fluorite, to 3.25 cm across makes for a visually appealing specimen here...very much more desirable than the usual solid blue plates. The color contrast is wonderful as is the fact that each fluorite crystal exhibits both purple and lavender hues differentially in zones. This was collected by Ray DeMark on his claims in the area in the summer of 2007.
4.8 x 3.9 x 2.0 cm. Theses are gemmy octahedrons to 2 cm tip-to-tip, wrapped around a thin shard of matrix (there are crystals on both sides). The color is a unique and distinctive shade of green. These were NOT found in quantity, and were snapped up quite quickly when they came out!
6.7 x 3.6 x 3.5 cm. This BIG octahedron of rare and sought-after pink fluorite (2.5 cm along the edge) has a rough look to it, but it is not from etching or contact: what you are seeing is reflection from thousands of micro-faces, sparkling back at you, on the main face surfaces. The interior is actually gemmy. This big crystal sits on a bed of sphalerite, which in turn is on a matrix of crystallized and massive pyrite. From a famous series of finds in the 1980s, and long in the collection of Dan Belsher who dealt a lot in Peruvian minerals at the time.
6.4 x 5.4 x 4.2 cm. The Daye area has been producing such a broad variety of fine specimens, many of them completely different variations of the same species, that it is always exciting. This is from a new fluorite find, and as you can see here, you have a golden cube of fluorite with a subtle purple phantom in it sitting right next to one that has a more dominant purple phantom - so that you get the effect of two different colors of fluorite sitting side by side! The larger crystal measures 2 cm on edge, the smaller, 1.5 cm.
19.1 x 12.9 x 4.2 cm. A large, super-rich plate of fluorite crystals from the find several years back that caused quite a stir, with octahedrons of all sizes embedded in stark white contrasting quartz. The crystals had a range of combinations of green and purple hues - this one has a nice balance of the two. These crystals were never lustrous, as they have to be etched out of the quartz with acid to expose them. The crystals here measure up to 2.5 cm across.
13.8 x 12.4 x 5.1 cm. These big octahedrons of intense green fluorite measure to 6 cm across. You can see that under good light, they really light up a gorgeous green color! A big, rich, pretty and impressive fluorite specimen.
9.1 x 5.4 x 3.9 cm. A FASCINATING and rare old German specimen that came out of the Harvard Mineralogical Museum collection (comes with label). You can see clearly the cubic forms of the crystals. But if you look inside, you see that they are QUARTZ, which of course does not form these cubes; the guess of the Harvard curators is that they were originally fluorites, completely replaced by quartz, and then later cast and coated with limonite (which gives the surface their brownish color). Ex. Harvard and Elling collections.
8.4 x 4.9 x 4.0 cm. Dozens of razor-sharp, deep purple octahedrons of fluorite (to 0.7 cm), isolated and peppered all over the stark white contrasting matrix - including on the back side. These New Mexico fluorites are so distinctive - you know exactly what they are at a glance, with their pretty sharpness and contrast. Unfortunately, not around like they once were. Ex. George White, Dave Stoudt collections.
6.2 x 6.0 x 3.3 cm. What I like about this Illinois fluorite specimen is the zoning of the crystal at its center. It has a clear corner, with a distinct purple core. The other crystals are distinctly zoned as well.
3.7 x 3.2 x 2.8 cm. A BEAUTIFUL, gemmy and lustrous, 1.2 cm, hot-pink, fluorite octahedron aesthetically attached to matrix from the famous Mt. Blanc Massif, Chamonix, France. Rarely do you find such a crystal so 3-dimensionally exposed and freestanding without being contacted or embedded more. This gorgeous, lightly frosted crystal has multiple terminations and is pristine. CLASSIC, HIGHLY DESIRABLE material from this very famous locale.
6.8 x 5.9 x 4.6 cm. An elegant combo piece collected by Bill Hatch when he was collecting specimens at the Camp Bird Mine in the late 70s. It features poker-chip calcites to 2.3 cm (though fatter than what would usually be called poker chip crystals) on a matrix of small fluorite cubes and microcrystalline quartz.
8.5 x 7.4 x 2.4 cm. This plate of fluorite crystals is from older finds at the Okarusu, and not the new ones of the past few years. You can tell by the unusual light green color and transparency of the crystals, which measure to 1.3 cm.
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Rob Lavinsky, rob@irocks.com
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