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Mineral Specimens with Fluorite
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9.9 x 8.4 x 3.9 cm. A matrix-free cluster of translucent, bright green fluorite from the Orange River on the South Africa side. This specimen features large octahedral crystals, one of them 7 cm tip-to-tip. The faces have hundreds of tiny triangular sub-faces all over them, which give the surfaces a sparkly, sugary look.
12.0 x 7.0 x 3.0 cm. Well-formed fluorite crystals are uncommon at Broken Hill, but this showy and excellent cabinet specimen has sharp, blue-gray octahedrons richly scattered on the drusy chalcedony-coated quartz matrix. The octahedrons reach 5 mm. Ex. Mark Feinglos Collection.
2.4 x 2.3 x 2.0 cm. A fine, old German fluorite specimen of a water-clear, gem cube with a corner modification that gives a stunning clarity at that tip, so you can look down inside. It has a thin, outer layer of purple, except at the corner. Ex. John Ydren Collection.
5.5 x 3.4 x 1.2 cm. A gemmy and attractive fan-spray of adjoined fluorite crystals consisting of multiple spinel twins. The luster ranges from glassy to silky, and the color is a delicate light green accented with purple. Ex. Charlie Key.
5.2 x 4.4 x 2.2 cm. A superb, gemmy plate of clear and transparent green Erongo fluorite. The crystals are cubes modified by octahedrons - the faces are clear windows into the mint-green Fluorite while the modified corners all have a stepped surface to them, creating a lovely contrast. The glassy luster can be seen and appreciated on all faces. The largest of the crystals is about 2 cm on edge and is intergrown with its neighbors. Ex. Charlie Key.
5.5 x 3 x 2.5 cm. This 2.7 cm Fluorite is purple throughout, translucent, and a modified octahedron. Beyond that, it is included by hundreds of silvery needles (mineral unknown). The Schorl is lustrous and striated. Ex. Charlie Key.
15.6 x 12 x 5 cm. A fine combination piece from the famous Elmwood Mine in Tennessee. The two major Fluorite crystals (up to 2 cm on edge) are the classic purple, and there is good zoning within the crystals, as well. The luster is excellent. Along with the Fluorites, there are super-lustrous ruby-jack Sphalerites up to 2.1 cm, and a thousand sharp 2 mm Dolomite rhombs. Ex. Charlie Key.
9.6 x 8.7 x 4.4 cm. Perched on a siliceous matrix with splendent, orange-black sphalerite crystals, to .75 cm across, is a large crystal of gemmy, lavender fluorite. Associated in the lower-right is a matte, battleship-gray, crystal of galena, 1.5 cm across. This slightly distorted cube measures 4.5 cm in length and exhibits edge color zoning. Ex. Harold Urish Collection.
5.5 x 4 x 2.3 cm. This is a super specimen with very unusual rhodochrosite crystals to 1.5 inches, on matrix. A little fluorite crystal provides accent. Ex. Jack Halpern Collection.
6.3 x 4 x 3.5 cm. This is a very rare and complex carbonate species that was found only sporadically, in small pockets, in the older days of this mine. This is a niece specimen showing the paragenesis of the mineral, on altering fluorite matrix. Ex. Martin Zinn Collection.
5.9 x 4.0 x 2.8 cm. This fluorite cluster has a very faint blue-green color. The central crystal here is very large for the Blanchard, at 3.3 cm along the edge. All the crystals have micro-stepped bevels. There are a few little accenting quartz crystals present.
7.6 x 4.4 x 3.4 cm. Fine purple, translucent, botryoidal fluorite from China.
3.3 x 3.1 x 2.9 cm. This fine crystal is complete all the way around. It is a glowing, translucent light green, with the frosty faces typical for these.
5.1 x 1.2 x 0.9 cm. A huge elongated and modified rhodochrosite scalenohedron triply coated with sparkly light purple fluorite and quartz microcrystals and iron oxide from the famous Santa Eulalia District of Mexico. Ex. Dave Stoudt Collection.
11.6 x 8.5 x 6.8 cm. This is a fine specimen from the finds a few years back of strikingly sharp octahedrons of fluorite embedded in stark white quartz, from the De’An Mine in China. The most desirable crystals mixed green and purple highlights, as these do. The crystals here measure to 2 cm.
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Rob Lavinsky, rob@irocks.com
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share specimen![Fluorite from Riemvasmaak, Kakamas District, Northern Cape Province, South Africa [db_pics/mdpics/MD-180699a.jpg]](db_pics/mdpics/MD-180699a.jpg)
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