MINERAL SPECIMENS from the TUCSON and MUNICH shows

MINERAL SPECIMENS
from the TUCSON and MUNICH shows

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TUC10-322 - Spinel - $ 2100
Mahenge, Morogoro Region, Tanzania
miniature, 4.8 x 4.3 x 3.4 cm

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These were found recently, in the end of 2009. And, this is a rather large and complete spinel for the find with unusual hot pink-red color and good symmetry (rare in this size).This crystal is 89 grams and complete all around. And NOTE when cut, the finest of this locality of the hot strawberry pinks bring up to $25,000 a carat! There are probably gem zones inside if you cob it, small ones anyhow. But most specimens from this find are small and partial. Large crystals like this were exceedingly rare. This is one of the largest my sources know of from the find, in complete and worthy specimen quality

TUC10-321 - Copper (spinel-twinned) - $ 1250
Chino Mine (Santa Rita Pit; Santa Rita Mine), Santa Rita, Grant Co., New Mexico, USA
small cabinet, 6.1 x 1.3 x 1.2 cm

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Copper (spinel-twinned) from Chino Mine (Santa Rita Pit; Santa Rita Mine), Santa Rita, Grant Co., New Mexico, USA [db_pics/new2010/tmu21a.jpg]

Copper (spinel-twinned) from Chino Mine (Santa Rita Pit; Santa Rita Mine), Santa Rita, Grant Co., New Mexico, USA [db_pics/new2010/tmu21a.jpg]

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Copper (spinel-twinned) from Chino Mine (Santa Rita Pit; Santa Rita Mine), Santa Rita, Grant Co., New Mexico, USA [db_pics/new2010/tmu21b.jpg]

Copper (spinel-twinned) from Chino Mine (Santa Rita Pit; Santa Rita Mine), Santa Rita, Grant Co., New Mexico, USA [db_pics/new2010/tmu21b.jpg]

From a famous find of 2006, this is a superb example of spinel-twinned copper crystals from a one-time erratic find. All came from a single large boulder found by Stan Esbenshade, and carefully trimmed out. This is, for the size , unusually thick - much more robust than most. Note the layer of secondary crystallization like wings along most of the central spinel twin. The clear spokes of the central twinned copper crystal provide several sharp flanges to give it added visual impact and size appeal. This was a onetime find, and now these are hard to find for sale today. This is a complete floater, terminated all around and formed in a spongy mass of strange copper float material.

TUC10-319 - Petalite - $ 1750
Mogok, Burma
miniature, 3.8 x 2.4 x 1.6 cm

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ex. William Larson

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A 17-gram GEM petalite with a most unusual, champagne color to it?! This is a total gem, floater, crystal. It has a large gem rough value to it, as well. From the James Zigras collection, and previously from the Bill Larson Mogok collection. Highly unusual and significant, for the Mogok or REE collector, I would think

TUC10-318 - Diopside - $ 950
Merelani Mines, Lelatema Mts, Arusha Region, Tanzania
miniature, 4.0 x 1.5 x 1.3 cm

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A large, intensely lime-green crystal from important finds here over the last few years. This is a fat and robust, 13 gram, crystal. It looks bigger than it masses, because the back is crossed by a contact where it grea against another crystal, and is thus thinned in places. It is complete all around and has moderate translucence. In color, this one is a little bit of a darker hue than the previous two specimens from the same mine, and it makes for a stunning single display crystal.

TUC10-315 - Diopside cluster - $ 2100
Merelani Mines, Lelatema Mts, Arusha Region, Tanzania
miniature, 4.3 x 1.5 x 1.2 cm

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This is a particularly elegant cluster of unusually gemmy, unusually lustrous, and unusually transparent lime-green diopside from a famous pocket of mid-2008. The quality of these things is like from no other pocket from the mine, and the diopsides from here do, i think, rank at the top of their food chain. Clusters are quite uncommon compared to singles. This cluster is complete all around, and has minor associated graphite. Note the unusually sharp termination on the specimen...it is beyond the ordinary quality.

TUC10NAM-22 - Shattuckite - $ 1200
Okenwasi Mine, Kaokoveld Plateau, Kunene Region, Namibia
small cabinet, 8.4 x 6.6 x 4.1 cm

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Here is an unusual pocket piece, a stunning specimen of velvety shattuckite of a vivid blue color, in soft rolling carpets of acicular tiny crystals, filling a shallow cavity on this matrix specimen. The curving of the pocket, and the banded rim around it, combined with the accent of sparklling green malachite, make this a very visual and showy specimen. This was found 2-3 years ago, and is from the collection of noted dealer and miner, Charlie Key, also then in the Marshall Sussman collection til now

TUC10NAM-21 - Shattuckite - $ 9000
Okenwasi Mine, Kaokoveld Plateau, Kunene Region, Namibia
cabinet, 11.4 x 7.2 x 6.4 cm

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Here is a COMPLETE POCKET of high-grade velvety shattuckite, literally perched on its own natural pedestal and complete all around! Mineralogically, a fascinating piece, I think. How could such a thing survive, its beyond me; but apparently the shattuckite geode survived intact when surounding calcite or quartz was dissolved or etched away in nature. The pedestal of malachite and quartz sets the pocket up nicely, vertically, in a completely unique manner. The exterior of the pocket is solid shattuckite in a banded growth, which conformed (i presume) to the shape of the void in calcite or quartz that it filled, back in geological time. Now with that exterior mold removed, all the natural roughness of the exterior is starkly contrasting to the soft velvety, rounded shattuckite inside the pocket.This was found 2 years ago, and is from the collection of noted dealer and miner, Charlie Key, also then in the Marshall Sussman collection til now

TUC10NAM-20 - Shattuckite (rare crystals ps. after Malachite) - $ 3000
Okenwasi Mine, Kaokoveld Plateau, Kunene Region, Namibia
small cabinet, 6.8 x 5.2 x 4.3 cm

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A rare, crystallized shattuckite specimen! Crystals, such as this, are much more uncommonly seen from any deposit where this species is found, than druses and globular growths. These are actually pseudomorphs after malachite, I was recently informed. Nevertheless, this is the BEST locale for the species, for large crystals - and this specimen would host some of the larger ones that I know of. The crystals , to 3 cm, form an upside-down spray of elongated, acicular crystals atop a contrasting quartz matrix. THESE ARE VERY 3-DIMENSIONAL in person. The cluster is complete around the backside as well (showing xls to 2 cm on the reverse, admixed with malachite). A major specimen, for both significance and display, this piece was illustrated in the JAN-FEB 2010 issue of ROCKS & MINERALS magazine, in the "Connoisseurs' Choice" Column, a recurring feature on a particular species and some of its significant known specimens. This was found 2-3 years ago, and is from the collection of noted dealer and miner, Charlie Key, also then in the Marshall Sussman collection til now

TUC10NAM-72 - Shattuckite (rare crystals ps. after Malachite) - $ 1050
Okenwasi Mine, Kaokoveld Plateau, Kunene Region, Namibia
small cabinet, 8.2 x 5.8 x 3.2 cm

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A rare, crystallized shattuckite specimen! The crystals, here as replacements after malachite, are much more uncommonly seen from any deposit where this species is found, than druses and globular growths. The crystals , to 1 cm, form concentric circular clusters of spraying , elongated, acicular crystals . Associated with them are small bits of contrasting primary malachite crystals in a deep green color. A beautiful display piece of a rare habit for the species, which is seldom seen in crystals of this size.

TUC10NAM-67 - Wulfenite - $ 2750
Onderra Mine, Kaokoveld Plateau, Kunene Region, Namibia
small cabinet, 7.7 x 5.6 x 4.8 cm

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This is a massive, heavy wulfenite specimen with huge, thick bipyramidal (unusual!!) crystals to 6 cm across! Here is a real rarity for the locality, in any size. And yet, beyond that, its HUGE. This is a piece from the Charlie Key collection, found about 3 years ago (2007-2008) in exploratory mining at this prospect (others in a recent update I made on this site were found more recently). It would be important from ANY locale. From here, its simply off the books and a shock to see. Despite its size, it is nearly pristine on the display face (just a few minor bruises, hard to spot). It is not complete on the backside, but is complete on 3 sides otherwise. This piece displays well either horizontally or vertically. Note also that this is a fairly rare habit for wulfenite, in bipyramidal crystals. So far as I know, this would be among the largest, if not the largest, bipyramidal wulfenite crystal out there. Most I have seen of this habit are 1-2 cm in size, max. This was found 3 years ago, and is from the collection of noted dealer and miner, Charlie Key, also then in the Marshall Sussman collection til now

TUC10NAM-65 - Shattuckite - $ 950
Okenwasi Mine, Kaokoveld Plateau, Kunene Region, Namibia
miniature, 4.0 x 2.6 x 2.5 cm

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This is a surreal, powdery-blue sculpture made of solid shattuckite. It consists of what seems to be a spherical aggregate of crystals atop a natural twisting pedestal. It is complete all around save for a few minor indentations in back (growth contacts). Very unusual formation, and while it looks stalactitic, they do not form in the same process. I was told by one person that it might be a pseudomorph after chrysocolla, as well. Unusual, in any case!

TUC10-53 - Sartorite - $ 450
Lengenbach Quarry, Imfeld, Binn Valley, Wallis (Valais), Switzerland
miniature, 4.8 x 3.1 x 2.7 cm

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From the TYPE LOCALITY for this rare species, here is a beautiful, extremely metallic and lustrous, 5 x 4 mm crystal in a protected cavity of sugary dolomite matrix. From the collection of a longtime Lengenbach collector, which was sold off recently.

TUC10-50 - Baumhauerite - $ 900
Lengenbach Quarry, Imfeld, Binn Valley, Wallis (Valais), Switzerland
small cabinet, 8.0 x 4.0 x 4.5 cm

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From the TYPE LOCALITY for this rare species, here is a beautiful, striated, 9-mm crystal in a protected cavity of sugary dolomite matrix. From the collection of a longtime Lengenbach collector, which was sold off recently. This is a fat , exposed, display-quanlity crystal! In this display quality, rarely seen

TUC10-49 - Sartorite - $ 200
Lengenbach Quarry, Imfeld, Binn Valley, Wallis (Valais), Switzerland
miniature, 4.5 x 3.8 x 2.7 cm

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Sartorite from Lengenbach Quarry, Imfeld, Binn Valley, Wallis (Valais), Switzerland [db_pics/new2010/tuc1049a.jpg]

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Sartorite from Lengenbach Quarry, Imfeld, Binn Valley, Wallis (Valais), Switzerland [db_pics/new2010/tuc1049b.jpg]

From the TYPE LOCALITY for this rare species, here is a protected cavity hosting a cluster of 2-3mm striated sartorite crystals, in sugary dolomite matrix. From the collection of a longtime Lengenbach collector, which was sold off recently.

TUC10-48 - Groutite - $ 750
Emilie Mine, Baden-Adenstedt, Peine, Lower Saxony, Germany
small cabinet, 9.5 x 4.8 x 4.2 cm

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This is an OUTSTANDING specimen of crystallized groutite in huge crystals and in a rich quantity, as well. The clusters of crystals measure to 1 cm and are richly scattered about a hollow vug inside this manganese nodule. The overall specimen is important for the species, but also interesting for how it shows the crystals formed, inside a hollowed nodule of the elemental manganese. It displays nicely from either angle, vertical or horizontal. When I first saw this specimen I was sure it was perhaps manganite or some other species, as groutite seldom forms such large crystals , nor such rich masses from other locations! But then I remembered I had one such before, as well. They are rare, and seldom seen. Also, the lustre on these crystals is quite good. From an old German collection recently starting to be sold...

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Rob Lavinsky, rob@irocks.com

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