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Mineral Specimens with Quartz
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5.4 x 4.7 x 3.4 cm. A fine specimen of a vertical, splendent cluster of sharp, parallel-growth, spinel-twinned galena crystals attached to a mounded sulfide matrix covered with needle quartz crystals. The smaller, spinel-twin on the left side of the piece is a very nice accent. The large spinel-twins are complete all-around and very nearly pristine.
5.8 x 4.5 x 1.5 cm. Morion quartz is an old-time European synonym for smoky quartz or black quartz. This fine old-time specimen features a very sharp and lustrous, 1.0 cm, translucent, smoky quartz crystal perched in a sliver of contrasting anhydrite from an Italian locality - Piana del Sale, Reggio Emilia Province. Ex. Richard Hauck Collection.
7.7 x 7.5 x 2.8 cm. A distinctive and dramatic pair of rabbit-ears Amethyst crystals, with good color and perfect form. The surfaces are gently frosted, which create a softness to the specimen that adds even more appeal.
8.3 x 5.5 x 2.4 cm. An outstanding doubly-terminated crystal that is pristine save for one contacted face along the back. The faden zone (the string-like line in the middle) is nearly straight, and traverses the center of the crystal. Even more interesting is the fact that this tabular Quartz bends attractively right along the faden zone. A terrific example of this variety of Quartz.
5 x 4 x 2 cm. Extremely sharp crystals to 7mm, combined with unusually fine isometric crystallography, makes this specimen a superb miniature for the locality. These were collected, I am told, between the 1880s and 1920s.
4.2 x 3.0 x 3.0 cm. 1-cm twinned cinnabars perched on sparkling quartz crystals.
7.5 x 4.3 x 0.7 cm. This is a remarkable quartz specimen, all by itself - even without the little green gemmy "pencil" tourmaline which has grown on its face. This is a floater crystal, with a sharp, complete chisel edge all the way around. The little tourmaline measures 2 cm, and is actually embedded in the face of the quartz crystal - the quartz has grown partially around it. Ex. Richard Hauck Collection.
10.1 x 7.6 x 6.9 cm. The reason this large cluster of quartz crystals was in the Hauck Collection is that it is just extremely unusual. The reason is that you have 3 different forms of quartz crystal on it. The first are long, slender, "conventional" prismatic crystals. The second are flattened, tabular crystals, growing amongst the prismatic ones. And finally, the specimen is crowned with a fine, transparent, 3-cm Japan-Law twin. Ex. Richard Hauck Collection.
8.5 x 8.0 x 6.5 cm. A fine, large specimen of this now very-well-known combo from Tongbei, but from original early 1990s finds there, so very different in style than more recent specimens. Here, you have a matrix of roughly euhedral feldspar crystals that provide a strikingly contrasting background for the little spessartine "jewels" isolated on them. A lone crystal of smoky quartz juts out of the top of the specimen.
15.4 x 12.5 x 8.1 cm. A very large, beautiful and interesting combination specimen from the classic Panasqueira locality - in fact, a combination that is quite familiar from there, but not in the unique form. What you have is a single large, complete quartz crystal jutting up at the back of an immense crystal of siderite – that’s right that is not a chunk of tan matrix, but a gigantic, complete discus-shaped crystal of siderite. At the front edge, the siderite has grown around a jumble of large ferberite crystals. Smaller siderite crystals have also grown on the quartz crystal, and the quartz has partially grown around them. Ex. Nowakowski Collection.
5.0 x 4.3 x 2.7 cm. You can see a shallow part of a pocket here of a well-loved combination from this mine: a druse of sparkly quartz crystals on a layer of sky-blue chrysocolla. The matrix consists about 50% of bands of chrysocolla and malachite. Beautiful contrasts. Ex. Richard Hauck Collection.
2.7 x 2.3 x 1.5 cm. Just a very interesting Mexican thumbnail specimen. You can make out the form of the original crystal of aragonite, which has been pseudomorphed by orangey agate. Unusual. Ex. Carlton Davis Collection.
12.0 x 7.5 x 6.5 cm. A large, extremely transparent quartz crystal, with silky faces, upon which have grown a number of teal-blue tourmaline crystals (the two main ones, with terminations intact). There is a ding on top of the quartz crystal, but other than that it is in very good shape, and is complete all around. The photo makes it look yellow like citrine, but it is not in person. Large, impressive, and a really unusual specimen for this mine. Ex. Richard Hauck Collection.
8.0 x 8.0 x 6.0 cm. A rare, large specimen of amethyst from Cripple Creek - a cluster of crystals piled atop one another, showing both terminations on one side of the specimen. This is very unusual, resulting from the way the crystals grew parallel to the matrix. An old US classic from the Richard Hauck Collection.
8.4 x 4.4 x 4.0 cm. A big, superb amethyst sceptre from Montana. It is complete and terminated at both ends - with one end being the amethyst "cap", and the other colorless and multiply-terminated. The purple end is wrapped around the colorless end. Ex. Richard Hauck Collection.
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Rob Lavinsky, rob@irocks.com
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