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Mineral Specimens with Fluorite
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13.9 x 9.4 x 8.1 cm. Big, chunky octahedrons of fluorite that glow a beautiful light emerald color under good light, from China. Contacts from removal are on the back and bottom, so across the display face you have this nice row of about 6 large, undamaged crystals.
15.14 x 11.1 x 5.7 cm. That purple-blue glow you see coming from the corners of the crystals is the intense fluorescence that you see in these Rogerley fluorites - it was not shot under any sort of fluorescent light that is just normal halogen. These actually fluoresce pretty intensely in plain old daylight! This is a BIG cluster, and while the crystals of course are not completely gemmy or it would be big bucks, the corners are, and the crystals are LARGE: to almost 4 cm along the edge!
10.4 x 8.4 x 2.7 cm. The exceptional clarity of these fluorite crystals makes me think this is from the older finds from maybe 10 years ago at the Okarusu rather than the more recent finds. They have a gorgeous greenish-teal color, and measure to over 2 cm on edge. The backside of this cluster is covered with small crystals as well, indicating that the cluster was loose in the pocket, allowing crystals to form on what used to be the matrix attachment face.
7.3 x 4.8 x 3.9 cm. I love how this pristine gem of a fluorite crystal (1.7 cm) sits there all by itself amidst the beautifully contrasting, milky quartz crystals. You can see some accenting muscovite here and there as well.
9.5 x 7.1 x 5.9 cm. Stark white scalenohedrons of calcite intergrown with step-faced octahedrons of translucent, light green fluorite - from Mexico.
12.3 x 5.5 x 2.9 cm. A plate of FINE, GEMMY fluorite twins from older finds at the Rogerley. You can see the high fluorescence of these crystals even in normal light. These Rogerley specimens range from gemmy to fairly "crackly" or heavily coated, but the crystals on this specimen are clear as glass and have this fabulous purple glow within their limpid green interiors. The largest twin here measures 2 cm.
8.0 x 6.1 x 4.1 cm. A showy and excellent Pakistan combination specimen of two, intergrown, lustrous, light sea-green fluorite octahedrons to 3.3 cm aesthetically set atop matrix of pearlescent muscovite books and nicely accented by embedded orange spessartine garnets and a scattering of snow-white cleavelandite.
15.6 x 11.4 x 9.3 cm. A DRAMATIC, 3-dimensional, mounded LARGE CABINET fluorite specimen. This excellent and showy piece features classic, translucent, Blanchard-blue fluorite cubes to 2.9 cm. The cubes are beautifully highlighted by purple edges and corners. A couple of contacts on this impressive specimen are certainly not a detriment. Ex. Ray DeMark Collection, a PRIMARY collector at this famous locality, who found this on his own claims in 2005.
17.4 x 12.9 x 5.4 cm. Fifteen or so crystals of super-transparent, razor-sharp fluorite, of a light blue-green color with pretty purple phantoms inside. The crystals measure to 2 cm on edge. They are set on a pretty bed of tiny rosettes of khaki-green muscovite. They are MUCH prettier in person, particularly under good light, such as case halogens - the brilliant teal color really jumps out - they are not bluish-purple as the camera made them appear, but a gorgeous and uncommon blue-green - and BRIGHT, with super luster.
10.6 x 6.4 x 5.3 cm. A large tiered, compound crystal of fluorite from the Minerva Mine, teal-blue with purple highlights. In person under good light, it really GLOWS. It is very transparent in its interior. Micro-faces have formed on the back contact side, so it was evidently loose in the pocket at some point.
12.5 x 8.4 x 6.9 cm. A large specimen of very transparent, honey-golden colored fluorite from Namibia. This crust of solid fluorite crystals is up to 2 cm thick following the contours of the underlying matrix to give it pretty 3-dimensionality.
9.5 x 6.4 x 3.9 cm. Collectors were thrilled when the Orange River locality began turning out these UNIQUE octahedral fluorites with bright mint green color! Here is a large, rich cluster, pretty much all fluorite with crystals all around it to 1.5 cm. These were never available in quantity and disappeared quickly.
11.8 x 10.9 x 3.3 cm. A LARGE plate of BI-COLORED fluorite from the Erongo Mountains, VERY unusual material for the locality. Looked at from the side, you can see that the fluorite started out golden-yellow then changed to a scarlet color as the solution in the pocket changed!
5.1 x 3.5 x 3.3 cm. A cluster of translucent to transparent cubes of fluorite from Mexico, to 1.5 cm on edge, with the appearance of pretty dark purple outlines.
9.5 x 8.4 x 3.9 cm. You have seen the weird spherical (botryoidal), translucent yellow fluorites that are well-known from this locality. Here, though, you have two sharp calcite crystals on a bed of quartz, with the small yellow botryoidal fluorites having grown on top of the calcites!
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Rob Lavinsky, rob@irocks.com
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