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Mineral Specimens with Cerussite
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7.0 x 3.6 x 2.1 cm. Crystal clusters of lustrous, bundled mimetite crystals, thin and vertical individually but overall in cluster to 1.0 cm across, completely cover a matrix of massive black ore. There are also a few crystals of gemmy and glassy cerussite, to .5 cm across, which are perched on the mimetite clusters. Unusual form for mimetite here. Ex. Charlie Key.
5.1 x 4.7 x 3.7 cm. A vuggy limonite is the matrix for a reticulated twin: A so-called snowflake form crystal cluster of lustrous and translucent cerussite. This colorless cerussite measures 3.3 cm across and the bridge girder twinning effect is very obvious. Very minor damage only, in 3 spots on the side, but the core is pristine and the reticulation eye-catching. Ex. Charlie Key.
2.6 x 1.6 x 1.4 cm. Spherules of velvety green malachite pseudomorphous after copper partially enclose colorless crystals of gemmy and glassy cerussite, to 1.0 cm in length. The process which allows malachite to replace copper in nature is very rare. Neat combination piece! Ex. Charlie Key.
3.8 x 2.2 x 1.8 cm. Jauntily perched high on matrix is a twinned, colorless, gemmy cerussite crystal, 2.0 cm across. Associated with this crystal are a few smaller, terminated cerussites. One, very minor wilber is located on the termination, just to the right of the twinning plane. Overall a sparkling gem on matrix!
5.5 x 5.1 x 4.1 cm. A RARE association of cerrusite with fine green dioptase crystals, from the world’s greatest mineral locality! This is a narrow seam of gemmy dioptases with top color and luster, nestled under a euhedral crystal of slightly smoky cerussite!
4.5 x 3.7 x 2.9 cm. Beaverite is a rare sulfate worldwide, but is very rare at Tsumeb. This is a VERY RICH specimen of earthy, yellow-green beaverite encrusting matrix and nicely accented by a scattering of cerussite crystals. This outstanding piece was found near the famous mimetite Gem Pocket of 1971 in the lower levels of the mine. Ex. Rob Smith Collection.
9.3 x 5.8 x 5.1 cm. A HISTORIC Tsumeb specimen, very probably from the famous surface exposure Green Hill at Tsumeb! This old-timer comes from an old European collection, where everything dates to the 1800s. Green, velvet malachite pseudomorphs after sharp azurite crystals richly and aesthetically line a vug in SOLID, poorly crystallized cerussite matrix. The large crystal is 3.5 cm. The Green Hill was gone by 1908.
5.9 x 4.0 x 3.6 cm. A CLASSIC, OLD-TIME and EXCELLENT jackstraw cluster of pearlescent, champagne-colored, acicular cerussite crystals from the famous Flux Mine of Arizona. The specimen comes with a fine provenance, having been in the John Sinkankas and Richard Hauck Collections.
3.6 x 2.2 x 1.4 cm. A ball of malachite, partly covered with little calcites, is perched right on a crystal of smoky cerussite! An interesting association specimen from a great locality that demonstrates its diversity and richness.
3.7 x 2.8 x 2.4 cm. Highly lustrous, "wet-look", apple-green pyromorphite crystals are capped by reticulated cerussite on this VERY SHOWY and EXCELLENT, two-sided piece from a very small, 2007 find at the famous Daoping Mine of China. The green color is gorgeous and one of the spindled crystals is hoppered.
3.9 x 3.8 x 2.4 cm. This is an absolutely glassy and gemmy, mostly colorless cerussite crystal 2.75 cm in length that has been included by wisps of light green malachite. This was a very rare find reported only once to my knowledge, in the late 1970s. In fact there is an article about it in the famous Mineralogical Record special issue on Tsumeb from the time, 1978. Minor peripheral contact exists at the right edge of the crystal but it’s basically all there, and stands so robust and gemmy it couldn't be placed better. There is some damage to the smaller adjacent crystals, but the overall beauty of the specimen is simply not affected. A drapery of sparkling yellow mimetite is at the front, lower edge. Ex. Carnegie Museum Collection.
3.2 x 1.9 x 0.9 cm. Rarely seen in today's market place, this small cluster of cerussite from Leadville is obviously an old specimen. Featuring adamantine luster and translucence, this specimen exhibits a whitish-yellow color superior to the chalky look seen on most surviving specimens from there. The largest crystal measures almost 3.0 cm in length. Ex. Carnegie Museum Collection.
3.4 x 2.6 x 1.9 cm. It is VERY hard to find complete "sixlings" of cerussite from the Tsumeb Mine, but all six of the spokes are present on this one! True, two of them have damage at the tips, but so many of these have only 3 or 4 of the spokes present at all that you can forgive this. The cerussite is translucent, with good luster, and showing reticulated growth on two of the spokes. These are very difficult-to-obtain Tsumeb classics! From the collection of noted California collector Charles Hansen.
4.9 x 4.0 x 3.7 cm. An excellent Tsumeb combination specimen of a pristine, glassy, smoky, cyclically-twinned cerussite crystal cluster preferentially coated with lustrous, tan mimetite needles. The cerussite blades are substantial and thick. There is a bit of contacting, but this is a complete all-around old-timer from this very famous mine. Mimetite on cerussite in not that common and this is a good one. Ex Rob Smith Collection, a Tsumeb specialist.
5.9 x 3.6 x 2.4 cm. A classic from one of the great worldwide localities. This rich cluster of elongated cerussite crystals, to over a centimeter, is in wonderful condition, despite its fragility and age. From the collection of noted California collector Charles Hansen.
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Rob Lavinsky, rob@irocks.com
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share specimen![Mimetite, Cerussite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-155857a.jpg]](db_pics/mdpics/MD-155857a.jpg)
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