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Mineral Specimens with Pyrite
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7.6 x 6.8 x 6.0 cm. An amazing pyrite concretion from a new Chinese find. This striking ball of parallel bands of sparkly pyrite microcrystals and shale looks like a hand-woven basket or clay pot with a very intricate, stylized pattern on the "lid". A unique and very fine specimen.
7.2 x 6.9 x 4.8 cm. A fine old specimen of goethite pseudomorphs after pyrite crystals up to 2.5 cm. This is a beautiful, two-sided specimen, dominated by the two interpenetrated cubes at the crest of the piece. The cubes have a lustrous, antique-brown patina. Ex. Mullane Collection.
3.7 x 2.0 x 1.2 cm. A fine cluster of brilliantly sharp, stepped-growth face, twinned sphalerite crystals to 2.2 cm dusted with pyrite and a spray of quartz needle. Classic, seldom seen combination material from this long-closed locality. Ex. Jaime Bird Collection.
12.2 x 7.7 x 4.6 cm. A fine cabinet pseudomorph specimen from recent finds in the Ronda Massif of Spain. Rust-red limonite pseudomorphs after sharp pyrite cubes comprise this complete-all-around, floater piece. The large, 4.0 x 3.6 cm cube is strikingly held up by two small pseudomorphs.
2.5 x 1.9 x 1.8 cm. A fine thumbnail. It has riveting perfection and total transparency. The crystal is just over 1 cm and is rimmed on one side with sparkling pyrite. The fluorite is perched at the apex of the host quartz. Complete-all-around.
6.0 x 5.8 x 4.0 cm. One of the few purple fluorites to ever come out of Shangbao, it seems, this is even more rare…one of the few purples to come out in the end-2008 dolomite finds. Most of the crystals associated with the dolomite in a series of several pockets were light blues and pastel greens, with a few pinks. This features a sharply phantomed purple crystal about 2 cm across, with others, in a pristine floater cluster with quartz and sparkling pyrite. Overall, a striking combination and quite unique for the locality.
6.9 x 6.0 x 3.4 cm. A most unusual piece for this mine, with a rich purple color. This is from the dolomite pockets at the end of 2008. The crystal is 2.1 cm across, translucent when strongly lit, and intensely purple. There is a really good contrast with the lustrous dolomite matrix and minor bits of sparkling pyrite.
8.8 x 7.5 x 6.5 cm. A fine, double pseudomorph from the Julcani District of Peru. The form and color of this piece are unreal. Splendent, specular, brass-yellow, botryoidal pyrite has casted tennantite, which in turn have pseudomorphed large, sharp, upright enargite crystals. The amazing 3-dimensionality of the large, isolated, bulbous pseudomorphs in the front and the couple of quartz crystals really highlight this specimen. The large pseudomorph in front is 3.5 cm high. Pieces of this quality came out in the heyday of this district, in the 1970s and 80s. Ex. Jaime Bird Collection.
Very pretty, bright pink isolated crystals of rhodochrosite intermixed with tetrahedrites (including a fine one of 1.8 cm), bright pyrites and small, snowy quartz crystals – all on a crystal of milky quartz. A Peruvian combo specimen that has it all! 7.5 x 3 x 3 cm
7.8 x 5.8 x 4.8 cm. A beautiful, splendent crystal group of sharp, striated, bright, pale golden color pyritohedral crystals of Pyrite from one of the most classic of Peruvian localities. A cluster of a few crystals (the largest measuring 4.0 cm across) sit atop a mound of smaller Pyrites crystals on massive Pyrite matrix. Ex. Brian Kosnar Collection.
29.5 x 11.9 x 6.5 cm. A magnificent specimen that is great in part simply because of its size….as long as a ruler, and with clear, sparkling quartz points to 5 cm shooting off from an unlikely extended stalk of pyrite crystals. Actually it is not a stalactite, though it looks it from the front. The pyrite covers a solid rock core, so the piece is stable despite its size and length. This was a natural stalk, or cap of a pocket extension that barely attached to the host wall, as it is crystallized around 3 sides with doubly-terminated quartzes even overhanging at one side edge. Ex. Richard Hauck Collection, obtained about 20 years ago.
An ULTRA-BRIGHT and SPARKLY pristine floater pyrite ball from Indiana tha tis jus timpossible to shoot because it is the brightest, sparkliest pyrite you have ever seen. The ball has two generations of pyrite. The larger pyritohedrons are super-lustrous and the second generation smaller pyrite crystals have an amazing sparkle to them. MUCH BETTER IN PERSON!! This quarry has been closed to collecting for about 15 years, though when i was a kid i used to deal in these a lot. Have not even seen a good one for sale in a decade , except for my own backstock! VERY NEAT IN PERSON! 4.5 x 4.0 x 3.9 cm
A showy combination piece of translucent and lustrous quartz crystals, preferentially coated with paper-thin calcite crystals and lustrous pyrite cubes and etched purple fluorite octohedrons aesthetically mounted at the front of the specimen. 8.8 x 6.5 x 5.5 cm
7.5 x 6.5 x 5.5 cm. An amazing pyrite concretion from a new Chinese find. This striking, slightly flattened ball of parallel bands of sparkly pyrite microcrystals on shale looks like a hand-woven basket or clay pot inset with pieces of precious metal. The concentration of pyrite on the “lid” and bottom has a striking look. A unique and fine specimen.
3.4 x 3.2 x 2.2 cm. Stunning, mirror-bright, brass-yellow pyrite octahedrons with interesting, modified edges form a very aesthetic, complete-all-around specimen from the Quiruvilca District of Peru. The dramatic, large octahedron is pristine. The heyday of Quiruvilca was the early- to mid-1970s, which is the age of accompanying Roberts Minerals label. Ex. Jaime Bird Collection.
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Rob Lavinsky, rob@irocks.com
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