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Mineral Specimens with Celestine
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7.4 x 6.8 x 3.8 cm. Arkansas celestines are actually quite uncommon; this old-timer came out of the Feist Collection. The face of the matrix is covered with these sparkly, transparent crystals, and there is a small pocket also lined with crystals.
8.5 x 8.0 x 3.5 cm. Olmiite is a rare, newly recognized manganese-dominant variant of poldervaartite and is found only at the N’Chwaning II Mine. This superb plate is covered with ball-like clusters of lustrous, tan, sharply crystallized, orthorhombic olmiite crystals on a complimentary bedded manganese oxide matrix. The scattering of water-clear celestine crystals is a beautiful accent. Olmiite was not named until 2007. Ex. Charlie Key dealer stock.
6.4 x 5.4 x 4.2 cm. On this classic Italian specimen, it is the sharp, gorgeously articulated celestine crystals that are the main feature of this specimen - with the sulphur crystals acting as a color accent to light up the specimen. Crystals measure to 3 cm, with perfect terminations.
3.5 x 3.5 x 2.5 cm. A fine example from the recent find at Clay Center of glassy, amber-colored fluorites in association with milky crystals of celestine. Clay Center has long been known as a fluorite specimen locality; the crystals can range from transparent such as this, to a rather murky brown.
15 x 13 x 10 cm. Here, where usually the sulphur crystals are the main feature on specimens from the locality, here, the sulphur is a druse of microcrystals, and the main feature are the large, elongated, gleaming celestines – measuring to 5 cm. They stand out strikingly from the surface of the sulfur-covered matrix, and lie across small pockets, exposing them all around. Ex. Rolf Wein Collection.
4.4 x 3.3 x 2.5 cm. A superb and extremely rare pearly, silver-blue Celestine on matrix. The luster is incredible. I have not seen Celestine with this particular habit (fine blades rotated through spheres) set on Calcite rhombs. Ex. Charlie Key.
4.4 x 2.6 x 2.2 cm. Clay Center is best-known for its amber-colored cubes of fluorite, but here is a rather uncommon combination specimen from the locality: a complex, compound crystal of spiky calcite has grown on a spray of frosty celestine (this same form of celestine is often seen in association with the familiar fluorites from there).
7.1 x 5.0 x 3.5 cm. A shard of frosty celestine has been completely wrapped by a profusion of complexly stepped, light purple fluorite; this intricate, architectural stepping is characteristic of fluorites from this locality, as is the association with celestine. Classic 1970s Mexican material.
4.2 x 2.6 x 2.6 cm. A stunning miniature of fluorite from a relatively recent find at Clay Center. The fluorite has the amber color characteristic of these finds, and here, this color is concentrated as a sharp phantom in the center of the crystal. The crystal is beautifully accented by blades of translucent celestine.
7.4 x 6.9 x 4.5 cm. This is a classic combination from the Machow Mine - bright yellow sulphur with elegant, translucent crystals of celestine. With this specimen, you have nicely-terminated, flat-topped celestine crystals to 4 cm, rising from a base of both the sulfur and tan/orange micro rhombs of calcite. Ex. Stoudt Collection.
11.9 x 7.1 x 1.3 cm. Tabular, pseudohexagonal crystals of light gray-blue celestine, old material from Canada. The crystals measure to 2.5 cm; they sit on thin, shell-like matrix of quartz.
9.8 x 7.3 x 6.3 cm. A superb cluster of lustrous, translucent, honey-brown fluorite cubes beautifully accented with white celestine blades from the quarries at Clay Center, Ohio. The striking, large cube is 4.4 cm and all of the cubes have gemmy corners. Nice brownish-white fluorescence. This piece, dating prior to World War II, is from the John Grieger Collection.
9.6 x 5.5 x 4.5 cm. This combination is classic from the opencast sulphur mine at Tarnobrzeg. Along the top ridge you have a row of tightly intergrown, elongated crystals of sulphur. Below it are isolated, smaller crystals, amongst a field of icy celestine prisms. Ex. Dave Stoudt Collection.
11.9 x 11.9 x 9.5 cm. This large, very aesthetic specimen is basically the inside of a pocket glittering with glassy crystals of icy blue-grey celestine. One thing that makes this specimen particularly pretty is that you have celestine in two generations - both large, chunky crystals (to 4 cm) - and, on the surface of a couple of thin sheets of matrix, smaller, sparkly crystals.
8.9 x 5.8 x 3.8 cm. Gemmy, icy blue-grey crystals of celestine (sometimes called celestite) from Madagascar. The luster is absolutely glass-like. The crystals have the chisel tips typical for this locality.
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Rob Lavinsky, rob@irocks.com
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