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Mineral Specimens with Mimetite
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Nice crystals to 0.9 cm rising from the matrix, yellow towards the bottom but tipped with bright orange. Tsumeb mimetites are of course quite desirable!! 4.6 x 2.1 x 1.7 cm
3.9 x 3.3 x 3.1 cm. A classic cluster of butterscotch-colored wulfenite blades richly dusted with olive-green mimetite botryoids from the Mina Ojuela and the Jaime Bird Collection. The sharp, moderately lustrous wulfenite blades reach 1.8 cm on this fine, two-sided piece. The wulfenites artfully rest on a sturdy gossan matrix. This is a very fine and aesthetic Mina Ojuela wulfenite and mimetite combination piece, with the way the wulfenite blades project vertically. Older material from the early 1960s.
7.9 x 6.4 x 5.3 cm. A beautiful Tsumeb specimen of gemmy and lustrous, honey-yellow, flower bulb-like mimetite crystal clusters richly and aesthetically scattered on the vuggy, 3-dimensional, starkly contrasting tennantite matrix. Ex. Rob Smith Collection.
Gemmy, bright orange crystals to half a centimeter cover two sides of the matrix. These lustrous, bright mimetites represented a very important new find for the species when they came out, but they were so extraordinarily expensive in specimens of quality that many people missed out on them. I am glad to have gotten a small batch lately that were reasonably priced enough for me to be able to offer them at auction. 8.2 x 5.3 x 4.5 cm
22.0 x 13.5 x 9.4 cm. A fine large cabinet mimetite with wulfenite specimen from the Mina Ojuela of Mexico. The front of the vuggy specimen is festooned with tiny, yellow-green mimetite botryoids and needles. Scattered about are wafer-thin, transparent, yellow wulfenite windowpanes to 9 mm. A secondary coating of drusy calcite covers a portion of the piece. Even the back and bottom are sprinkled with mimetite on this old-time piece, probably dating to the 1960s. Ex. Mullane Collection. Classic Ojuela material.
8.5 x 6 x 4.5 cm
5.8 x 3.9 x 3.7 cm. Gemmy and lustrous, golden-orange, tabular mimetite crystals to 5 mm richly and aesthetically cover the sturdy, 3-dimensional, mounded gossan matrix plate on this fine small cabinet specimen. These lustrous, bright mimetites represented a very important new find for the species when they came out 5 or 6 years ago. This very fine small cabinet has gemmy and lustrous crystals with excellent quality and rich coverage. Ex Mijer Collection.
A striking Tsumeb thumbnail with a windowpane wulfenite crystal (one cm across) with small forest-green spheres of mimetite on it! There is damage to other smaller crystals but this one crystal on top is the star. 3 x 2.2 x 1.2 cm
4.5 x 2.6 x 1.3 cm. A classic Mina Ojuela specimen of four lustrous, blocky to tabular, butterscotch-colored wulfenite crystals very aesthetically set on sturdy gossan matrix richly covered with starkly contrasting, olive-green mammillary mimetite. This fine piece probably dates to the famous 1968 find. Ex. Jaime Bird Collection.
From the exciting finds of Chinese mimetites recently that came out at prices high enough to scare a lot of people off, this is a gorgeous specimen whose smaller crystals give it all the pizzazz of the bigger specimens, at something more of an affordable price. They are actually quite GEMMY and have the best intense orange-yellow color. These fine crystals sparkle all the way across the display face of the specimen, from end to end. 9.8 x 6.0 x 4.4 cm
8.9 x 6.9 x 2.8 cm. This fine and rich specimen was illustrated in the "What’s New from Munich" section of the March/April, 2007 issue of the Mineralogical Record, Vol. 38, No. 2, p. 162. Teal-blue plumbogummite covers crystals and a crust of yellow mimetite on quartz from the Yangshuo Mine of China, which is on the other side of the mountain from the Daoping Mine.
7.0 x 6.6 x 6.4 cm. From the classic San Francisco mine in Mexico, this is a beautiful specimen of Wulfenite which hosts several sharp, lustrous, translucent/gemmy, butterscotch color tabular crystals on gossan matrix. The "main" crystal at the top of the piece measures 1.7 cm on edge. The Wulfenite crystals are associated with small yellow botryoidal Mimetite aggregates as well. Ex. Brian Kosnar Collection.
8.5 x 5.8 x 3.4 cm. An excellent, historic old-timer from the Phonenixville District, Pennsylvania. The sculptural and hefty gossan matrix has multiple vugs lined with lustrous, glassy, butterscotch-colored wulfenite prisms to 7 mm associated with pastel-green mimetite botryoids. The Phoenixville mines reached their highest production in the 1850s and the district was extinct by 1870. Specimens of this richness and quality are uncommon. Ex. PhiladeIphia Academy of Sciences Collection.
12.5 x 11.2 x 3.0 cm. A sculptural, gossan, cabinet plate dramatically and richly covered with lustrous, yellow, composite mimetite botryoids from the famous late 1960s find at San Pedro Corralitos, Mexico. Highly representative, large and classic material from this find, with very good color and essentially pristine. Ex. Dennis Mullane Collection.
A WONDERFUL mimetite specimen, with super-bright, perfect balls of mimetite on limonite matrix. No damage, and just a really fine piece. Ex. Dealer stock of Dr Gary Hansen, rich in old 1970s material 7.1 x 4.5 x 1.4 cm
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Rob Lavinsky, rob@irocks.com
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