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91 specimens listed
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Pyromorphite - important, historic
stock #1023-JM-553
Berezovsk Mine, Ekaterinburg, Sverdlovskaya Oblast, Middle Urals
Sverdlovsk Oblast, Russia
8.2 x 7.3 x 4.3 CM (cabinet)
price: $2200
Pre Tucson

From the Harvard Museum collection then by trade (1977) to John Marshall, this is a very old specimen originally in the Leibener collection. Exceptional size and quality for this famous Siberian Urals locality where mining began in 1747. Although this was a gold mining area there were many other minerals found there, it is the type locality for 7 species one of which (Crocoite) led to the discovery of the element Chromium. This is an extraordinary rich and significant Pyro specimen from this classic locality, it may be the best extant outside of a major museum. Typical specimens are usually just druzy crusts and association pieces. The Pyromorphite here is deep forest green with the main crystalized mass of 6x5 CM. Individual prisms are up to 6 mm in size though most are under 4mm. In remarkably good condition, no obvious naked eye visible damage but magnification does show several small broken and chipped crystals. Despite this it is still a good display quality specimen and would be a fine addition to any serious Pyromorphite suite or Russian collection.

Breunnerite - (Fe bearing Magnesite)
stock #AX-35-102
Muhlebach, Ernen, Goms
Wallis, Switzerland
4.3 x 3 x 2.1 CM (miniature)
price: $220
Pre Tucson

Something quite unusual. Breunnerite is a variety of Magnesite that was for almost 2 centuries considered to be an accepted mineral specie. This is now classified as a Magnesite variety but with a high Iron ratio and Mg dominant. No matter the classification, these are huge crystals for this variety, up to 2.8 CM and these contrast well with the greenish Talc matrix. The best of this material is found in European Alpine regions, as was this specimen. The crystals also show zoning and look much more like Siderite than Magnesite, and are partially translucent. Not often seen at all in the mineral market here, this is an especially well-crystallized specimen.

Wulfenite on Cerussite
stock #RP 20-FC-059-(9164)
MFouati Mine, Bouenza Department
Bouenza Department, Republic of Congo (Brazzaville)
4.8 x 3.8 x 3.4 CM (miniature)
price: $2850
Pre Tucson

The new finds of Wulfenites of M'Fouati have been huge news in the mineral world. The association with Cerussite and the remarkable etching of the blocky habits is unlike any others ever found. This specimen has superb esthetics all around and is in perfect condition. The Wulfenite has intense color with glassy luster on some faces and many geometrically etched patterns on other faces. The Cerussite is complete, undamaged on all sides with just a small contacted area on the underside. These Cerussites are twinned in multiple ways and some are also etched on selective faces. There were not many specimens of this top caliber found, these few killers are instant classics.

Chrysocolla - druzy sprays
stock #RET 20.1-325
Inca De Oro, Chanaral
Atacama Region, Chile
8.3 x 7.9 x 6.8 CM (cabinet)
price: $390
Pre Tucson

Colorful, sparkling sprays of radiating Chrysocolla filling a vug in ore. The drusy Quartz covers the Chrysocolla and there is a zone of light blue druzy as well. In fine condition, this deposit has been exhausted for many years these Chrysocolla are modern classics.

Topaz - classic Russian, on Feldspar, Quartz
stock #ARET 16.1-597
Murzinka Mine,Sarapulka Dist., Sverdlovskaya Oblast, Middle Urals
Urals Region, Russia
5.4 x 3.2 x 3 CM (small cabinet/large miniature)
price: $560
Pre Tucson

A 2.5 CM tall gem clear colorless Topaz crystal rises above the contrasting Matrix. The Topaz is undamaged, in impeccable condition, the matrix has some bruising but it is the matrix and not at all a detriment. A very nice composition over all, good Topaz from the Urals is something of a mineralogical prize and highly respected by collectors. A very good value for the quality and esthetics.

Eosphorite on Rose Quartz
stock #RT 20.1-326
Pitorra Claim, Laranjeiras, Galileia, Doce Valley
Minas Gerais, Brazil
4.7 x 4.6 x 3.4 CM (miniature)
price: $440
Pre Tucson

Dense clusters of golden-brown Eosphorite needle crystals on contrasting Rose Quartz. The Eosphorite is transparent and very lustrous. The condition is excellent which is impressive for these slender, delicate crystals. The Rose Quartz is also well-crystalized, the largest prism is over 1 CM though most are smaller. An excellent example of the specie which is also attractive and undamaged.

Beryl var. Emerald
stock #ARET 8.2-387
Coscuez Mine
Boyaca, Colombia
6.2 x 4.8 CM (small cabinet/ large miniature)
price: $3400
Pre Tucson

Classic Colombian Emerald crystal on matrix. Excellent transparency, the crystal is fairly thick, glassy with basal termination. The color is a very rich green but not quite the top intense color which is of course far more expensive. Sits well and stands out in any sort of display. It is very hard to find sizable crystals on matrix that have not been repaired, faked or otherwise unnatural. This one is fully natural and not enhanced. The crystal is 2.2 x 1.7 CM and is nicely balanced on the matrix. Good condition, there are micro edge chips seen with loupe but no really bad damage, the "bottom end" of the crystal is contacted and does not show a clear termination. This quality is now very hard to get in Colombia at any reasonable price if at all. If this was mined today this would be treated, infused, cut and sold in the gem market. It would also be a lot more expensive!

Carrollite on Calcite
stock #23.1-235
Kamoya, Kambove, Katanga Copper Crescent
Haut- Katanga, Democratic Republic of Congo (Zaire)
4 x 3.8 x 3.3 CM (miniature)
price: $280
Pre Tucson

A pair of perfect Carrollite crystals nestled in a Calcite matrix. The Carrollites have bright metallic luster mostly silvery but a few faces have a golden sheen too. These crystals reach 1.4 CM. This is from the finds in 2005 where the matrix was a solid Calcite. Many later finds had Talc and Calcite matrix and the Carrollites tended to fall out, hence there were many matrix-less single crystals and repaired matrix pieces. This is fully natural and not repaired. For the past 6 years there has not been any new finds. This locality has a well earned respect for the best Carrollites even found. Though this is not a top piece from this mine it is choice and affordable and better in size and quality than any specimens from any other location in the world.