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Mineral Specimens with Fluorite
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7.9 x 5.9 x 4.9 cm. A fascinating and really very aesthetic combo of FOUR Dal’negorsk minerals. On what appears to be a single GIGANTIC compound crystal of sphalerite is a compound crystal of fluorite measuring 3.5 cm across. Beneath this you can see both etched and euhedral faces of galena. And here and there, the gold and purple color is from iridescent chalcopyrite.
5.9 x 4.3 x 2.9 cm. This appears at first glance to be Chinese, but no, it is a much rarer, superb specimen of purple fluorite from the San Antonia Mine (out of the Marty Zinn Collection). The fluorites and associated quartz crystals completely surrounded the sparing matrix, so all you see is this glorious burst of color and sharp crystals, with an extremely aesthetic overall form. The fluorites measure up to around one centimeter across.
7.1 x 5.2 x 3.4 cm. Another fine Marty Zinn specimen - he is a stickler for damage, and as with most of his specimens, this one stands out for its pristine condition. What you have is a cluster of fabulous bright golden-yellow fluorites, accented perfectly by a single, isolated fan of baryte crystals that, to me, "makes" this good fluorite specimen great. The fluorites measure to 2 cm along the edge.
14.4 x 8.5 x 5.8 cm. This specimen was really difficult to photograph, because the color of the crystals is so subtle - a beautiful mint blue-green. The frosty octahedra are REALLY big, to over 3 cm along the edge. There are over a dozen here, intergrown with colorless fluorite.
3.0 x 2.7 x 2.2 cm. It is very uncommon to see a phantom fluorite from China this dramatic! Inside a compound crystal of glassy-clear, stepped sub-crystals is a highly modified phantom crystal, demarcated by highlights of purple - which thankfully are there, or you might not be able to make out the phantom.
4.2 x 2.4 x 2.0 cm. A jewel-like toenail specimen of fluorite perched perfectly on two shards of snowy quartz. The fluorite measures 1.5 cm across, and is water-clear with blushes of purple inside. The only contacting is on the back side and edge. Ex. A. Martaud Collection.
6.3 x 4.2 x 3.8 cm. This is an OLD-TIME English fluorite that passed through the J. Behier and Martaud collections before coming to us. One of the crystals here measures 2.5 cm along the edge! It is intergrown with another large crystal. There are a number of fine, very gemmy smaller twins here. This is the classic green with highlights of purple emphasized by its high fluorescence, even in natural daylight. Ex. Behier & A. Martaud Collections.
8.9 x 5.4 x 4.4 cm. A cluster of grassy green, quite transparent crystals of fluorite - a free-standing cluster virtually matrix free. The crystals measure to 2.5 cm along the edge. They have pretty stepped modifications on their edges and corners. Ex. A. Martaud Collection.
4.2 x 3.4 x 2.4 cm. Very few of these fluorite specimens from this remote locality came out, because the two miners who found them ultimately decided that the incredibly harsh working conditions, and the fact that the specimens were found one at a time rather than in rich groups, made it unfeasible to collect them. At any rate, they have a unique, really pretty look to them, and often, these flattened rectangular crystals that are really distinctive. Ex. A. Martaud Collection.
4.9 x 4.2 x 2.0 cm. The famous Hilton Mine of Cumbria is renowned for gorgeous, golden-yellow fluorite crystals. This cluster of solid fluorite cubes is capped by 1.2 cm, water-clear, gemmy fluorite cube with an attendant inter-penetrating twin. Adjacent crystals also have inter-penetrating twins.
4.6 x 2.6 x 2.0 cm. Zoned, glassy, transparent, blue-green fluorite cubes to 1.7 cm attached to matrix from the famous Brandenberg Mine, Black Forest of Germany. The purple phantoms in the two large cubes and the arrangement of the fluorite cubes are striking. Super purple fluorescence.
3.7 x 2.7 x 2.6 cm. An unusually attractive small miniature with very bright calaverite, both massive and crystallized, mixed with massive purple fluorite. The freestanding calaverite is 2.5 mm. The cluster of aggregate crystals is about 1 cm across. Ex. Rice Northwest Museum Collection.
18.5 x 14.3 x 4.2 cm. This large fluorite specimen has the distinction of a small rim of the stark white matrix, which sets the crystals off beautifully; this was rare. These octahedrons have fine translucency, and measure up to 1.8 cm on edge.
8.4 x 5.1 x 3.2 cm. A cluster of gemmy fluorites, to 1.3 cm, perched on the edge of the matrix - with dramatic purple-outlined phantoms in each of them. Ex. A. Martaud Collection.
9.4 x 7.3 x 4.1 cm. Two sharp crystals, the larger measuring 3 cm, with slightly frosted faces, isolated on the white quartz matrix.
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Rob Lavinsky, rob@irocks.com
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