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Mineral Specimens with Fluorite
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7.7 x 7.4 x 5.8 cm. Only a handful of these so-called "alien-fluorites" came out of the ground, sometime starting last April and extending to another pocket found just before September. However, very few large crystal specimens showed so nicely and in such size as this one, with 3 "alien" phantom faces able to show off at the same time.
26.8 x 21.5 x 10.0 cm. A huge specimen with impact, for both color and size. It weighs nearly 17 pounds. The color, because of the clarity and yet the thickness combined, is strong and deep even despite the clarity of the crystals. This piece is pristine on the display face.
14.5 x 12.4 x 8.3 cm. The color on this piece is intense and striking, among the deepest color in the lot and yet the crystals are still very translucent despite this intensity and their thickness. This specimen is very interesting, with a strange composition formed from two elongated, intergrown crystals that support one another like poles on a tent. The left crystal is 13 cm long, the right crystal 11 cm. They merge into one another, forming a composite cluster of the two that is unusual for its geometry.
11.1 x 9.6 x 5.3 cm. This is a superb rhodochrosite, fluorite, and quartz combination specimen from the Rob’s Pocket find at the Sweet Home Mine. Marty was one of the original investors in the specimen recovery operation here, and had early pick of pieces from many pockets, which he added to his own large collection (sold off in 2005). Ex. Martin Zinn Collection.
6.1 x 5.2 x 3.9 cm. An unusual association. This specimen hosts an absolutely gem, water-clear crystal of goshenite (colorless, with no trace of blue to my eye), associated with a fluorite on muscovite matrix. The goshenite crystal is really quite nice - exceptional in clarity, lustre, and brightness.
6.5 x 5.5 x 3.4 cm. Superb, intergrown, color-zoned fluorite cubes set on contrasting sugary calcite matrix from the Shangbao Mine of China. The transparent, TV-like cubes have preferential, frosted, stair-step corners. The color zoning is mesmerizing, with the white center, purple rim and sea-green, outer body. The large cube is 3.2 cm. The small, purple-rimmed cubes on the edge are a nice accent.
9.9 x 5.9 x 3.3 cm. A very rich cluster of stunning green fluorite from the Erongo Mountains - a find that did not produce much quantity, and certainly not in carpets of crystals this large and rich. Many specimens consisted of a scattering of small crystals on a shard of the white matrix. Here you have crystals to 1.6 cm, with the intense, glowing green color that makes these so distinctive.
9.9 x 8.9 x 6.9 cm. This is a very unusual Riemvasmaak fluorite in that the fluorites are so stunningly set off by this field of shining milky quartz crystals. The contrast is just gorgeous. The fluorite octahedrons themselves are of superb quality; they measure to 1.5 cm.
11.9 x 11.9 x 3.9 cm. This is a truly weird Chinese fluorite specimen, for several reasons. Starting with the fluorites - which are light teal-colored cubes enclosing cuboctahedral phantoms with purple bevels. The edges of the fluorites are highly modified, with complex stepping. They sit above a field of creamy calcite crystals, with a few larger, euhedral golden ones. And barely visible amidst the calcites are areas of pale pink rhodochrosite - you can see it as the pinkish areas in the photo. They do not stand out much and are micro-crystalline rather than really aesthetic, but it is the association that makes this specimen so interesting.
4.9 x 2.9 x 2.3 cm. Just a pretty miniature of Blanchard fluorite, suffused with the gorgeous "Blanchard Blue" teal color, but in the case of this pocket, with dark purple outlines around the crystals. They are beautifully isolated on a bed of quartz.
15.9 x 10.4 x 6.8 cm. These are just huge crystals of old English fluorite from a place that was in its heyday in the mid 1800s. This is a very old piece, which spent at least part of its life in the collection of Alain Martaud and he got from an old collection. While the crystals are not gemmy, their size is impressive for English fluorite - the biggest crystal is 4.5 cm along both edges - and they are in remarkable condition considering their size. Excellent fluorescence.
5.4 x 4.4 x 2.6 cm. Yaogangxian has churned out more than its share of fluorite specimens, but I have never seen one like this before. This is a sculptural tumble of crystals that look frozen in mid-air; each crystal is transparent around the edges, with a frosty phantom inside.
This Photo was Mindat.org Photo of the Day - 25th Sep 2009
5.2 x 3.4 x 2.4 cm. A cluster of pretty acid-yellow cubes of fluorite, to 1.5 cm on edge, in good condition, with accenting calcite. Rare locality, and a good specimen.
11.9 x 5.4 x 6.9 cm. This is a big specimen of the famous "Blanchard Blue" fluorite from New Mexico, with its distinctive teal color. The crystals are isolated on the contrasting quartz rather than massed together, adding to the beauty of this piece. The largest crystal is a sizeable one that measures 2 cm along the edge.
17.9 x 7.6 x 7.4 cm. What is remarkable about this specimen is that the fluorites have a sprinkling of small, rounded, sparkling crystals of what appears to be galena on them. They look almost like balls of mercury. This is extremely unusual, pointing to a lead-rich solution that flowed through the pocket after the fluorites formed.
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Rob Lavinsky, rob@irocks.com
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share specimen![Fluorite from Erongo Mountain, Usakos and Omaruru Districts, Erongo Region, Namibia [db_pics/mdpics/MD-197403a.jpg]](db_pics/mdpics/MD-197403a.jpg)
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