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Mineral Specimens with Hematite
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8.3 x 3.1 x 2.3 cm. This one, for the size, floored me as one of the most elegant examples. A cluster of small octahedrons of lustrous , dark metallic hematite after magnetite forms the base for an elongated, hoppered crystal measuring 6.25 cm in length, which is crowned by a tiny octahedron. Stark and beautiful contrast of different crystal forms of the same material on the same piece making for a really nuanced whole! This is a pristine floater, complete all around, with better lustre in person than appears here.
5.7 x 3.3 x 2.5 cm. This specimen has a lot going for it. The large crystal on this floater exhibits both octahedral and hopper growth and it measures 4.25 cm in length. It is perched smartly on a natural pedestal and is complete and 3-dimensional all around, an excellent (large) miniature for this find! This is a pristine floater, complete all around, with better lustre in person than appears here.
8.0 x 4.9 x 4.7 cm. Spectacular! This is a single, HUGE, octahedral crystal that also exhibits major hopper growth. It is also a complete floater and is doubly terminated. The luster is top shelf and the whole dark metallic specimen sparkles with a secondary druse of hematite capping the pseudomorph itself. For stark geometry, this one leaps out.
7.6 x 3.0 x 2.7 cm. This piece features a large and exquisitely hoppered octahedron perched on a small cluster of crystals. The large crystal measures 5.0 cm in length and three faces exhibit the beautiful chevron effect of hoppered growth where the crystal edges grow faster than the crystal centers. It has great luster and a dark gray metallic color. The symmetry is striking, in person all the more so. This is a pristine floater, complete all around, with better lustre in person than appears here.
9.3 x 7.8 x 7.7 cm. A 5.0 cm wide, comb-like cluster of intergrown hematite iron roses very aesthetically perched atop massive feldspar from the famous Morchnerkar area of Austria. The iron roses have textbook form, are more lustrous on the crystal edges and are nicely accented by silvery muscovite plates. Classic material from the Alois Steiner and Rolf Wein Collections, both noted Alpine specialists. Wein obtained the piece in 1982 from Steiner.
6.1 x 4.3 x 3.4 cm. Usually, you get one or another of the two things on this specimen, but not both. You have a sharp , glassy crystal of quartz shot through with golden acicular crystals of rutile; and, an example of the rutile-included hematite well-known from here as well - both on one specimen and not broken apart...very rare combo.
5.3 x 4.6 x 2.7 cm. You are now probably familiar with this combination from Brazil of golden, acicular crystals of rutile with platy-metallic hematite. This specimen looks great from both sides. On one side you have this pretty 30-degree burst on two different levels, and on the other, a large, gleaming plate of hematite with rutile between its spokes. A really rich and pretty one!
3.4 x 2.7 x 2.4 cm. A complete octahedron of magnetite has been replaced (pseudomorphed) by hematite, retaining the octahedral form of the original magnetite. You can see interesting concentric triangular-shaped terracing on the faces.
5.8 x 5.4 x 4.4 cm. This rare piece came out of the Seaman Museum collection (specializing in Michigan minerals). It is an example of the very unusual micaceous habit of hematite, where it forms thin, mica-like layers massed together in thick "books." This is a rare old-timer!
4.7 x 4.3 x 2.1 cm. This is a superb miniature of rounded, colorless, calcite rhombs with bright orange hematite inclusions which don’t quite reach the terminations, giving the crystals vivid color zoning highlighted by the transparent edges thus. The crystals are lustrous, translucent, and reach 2.5 cm across. A super fine Tsumeb calcite of a rare habit! Ex. Charlie Key Collection.
10.2 x 6.7 x 5.6 cm. Colorless rhombs of gemmy and glassy calcite to 3.0 cm across have received a preferential, thick dusting of reddish-brown, lustrous hematite, presenting a deep red color when all those faces angle forward. Underneath, from the side, you can look into the crystals through the clear colorless windows of the rhombohedral faces. The color contrast is superb and the sculptural form of the piece, very 3-dimensional, is also nice. Ex. Charlie Key Collection.
9 x 9 x 4.3 cm. SHARP, incredibly deep red crystals that are thoroughly infused with microscopic hematite grains, giving them a deep ruddy red color. The piece is pristine and complete 360-degrees except a few very miniscule little nicks. This is a CLASSIC style for Tsumeb. However, large specimens in this condition are very rare. Ex. Charlie Key Collection.
2.8 x 1.6 x 1.4 cm. A killer hematite thumbnail, with the unusual crystal habit you sometimes, rarely, see here of pseudo-scalenohedral form. Sharp and complete on the termination! Ex. Charlie Key.
6.9 x 4.1 x 3.7 cm. STRIKING, rich, golden-yellow gold flakes are densely scattered on hematite matrix on this very showy and rich specimen from a less well-known Arizona locality - the Dutchman Mine, Bouse, La Paz County. Old-time and excellent material. Ex. John Ydren Collection.
3.2 x 2.1 x 2.0 cm. The Lake George area of Colorado is best known for producing some of the most magnificent Amazonite specimens in the world. There aren''t many species associated with the Amazonite, mostly Quartz, Albite, Fluorite and sometimes Hematite. The majority of the Hematite specimens from the Lake George area are often found as pseuomorphs after Siderite. This particular specimen features a gorgeous cluster of excellent, sharp, aesthetic rhombic crystals of Siderite which have been replace by Hematite and are sitting atop beautifully contrasing pink Microcline. The specimen was collected by Richard Kosnar in the Summer of 1977. A very attractiv, and hard to find Hematite pseudomorph from this historic area in Colorado. Ex. Richard Kosnar Collection.
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Rob Lavinsky, rob@irocks.com
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share specimen![Hematite, Magnetite from Payún volcano, Altiplano de Payún Matru, Mendoza, Argentina [db_pics/mdpics/MD-160168a.jpg]](db_pics/mdpics/MD-160168a.jpg)
![Hematite, Magnetite from Payún volcano, Altiplano de Payún Matru, Mendoza, Argentina [db_pics/mdpics/MD-160169a.jpg]](db_pics/mdpics/MD-160169a.jpg)
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