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BB12 - Uraninite Xl with Rutherfordine - $ 125 SOLD Uluguru Mountians, Morogoro District, Tanzania thumbnail, 0.9 x 0.8 x 0.7 cm ex. Charlie Key
A sharp example of well-formed uraninite from this classic locale! RARE AND OLD!
MD-159319 - Gummite, Uraninite (Var: Pitchblende) - - Archived Pick's Delta Mine (Delta Mine; Pick's Mine), Delta, San Rafael District (San Rafael Swell), Emery Co., Utah, USA small cabinet, 7.0 x 5.1 x 3.3 cm.
7.0 x 5.1 x 3.3 cm. Gummite is a rare radioactive mineral, a mixture of uranium minerals, oxides, silicates, hydrates and hydrous oxides of uranium, derived from the alteration of uraninite. It is named for its gum-like consistency. Here you see a layer of yellow-orange gummite on a matrix of pitchblende. Hard to obtain! From the collection of noted California collector Charles Hansen.
MD-179869 - Uraninite - - Archived Bancroft, Bancroft District, Hastings Co., Ontario, Canada miniature, 4 x 2.7 x 1.6 cm.
4 x 2.7 x 1.6 cm. Emplaced in orange calcite is a lustrous, black, octahedral crystal of uraninite, 0.7 cm across which has been twinned and penetrated by another uraninite crystal. Ex. George Elling Collection.
MD-180995 - Kamotoite-(Y), Astrocyanite-(Ce), Uranophane, Uraninite - - Archived Kamoto East Open cut, Kamoto, Kolwezi, Western area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) small cabinet, 5.8 x 4.7 x 3.8 cm.
5.8 x 4.7 x 3.8 cm. The kamotoite-(Y) are the vibrant yellow crystalline sprays with individual flat-laying crystals to 6 or 7 mm, accented by microcrystalline uranophane around their periphery and by a small bit of subcrystalline Astrocyanite-(Ce) (blue). TYPE LOCALITY for both Kamotoite-(Y) and Astrocyanite-(Ce).
MD-199866 - Uranophane, Uraninite - - Archived Angel Mine, Sierra de Córdoba, Córdoba, Argentina miniature, 3.9 x 3.8 x 2.3 cm.
3.9 x 3.8 x 2.3 cm. Relatively sharp pseudomorphed crystals to about 1 cm, of Uranophane pseudo. Uraninite from this unusual location. Nice for the replacement from any locality. Ex. Philadelphia Academy of Sciences Collection.
MD-201068 - Fourmarierite, Becquerelite, Uraninite - - Archived Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) miniature, 5 x 5 x 4 cm.
5 x 5 x 4 cm. A rich example of Uraninite covered with red hexagonal Fourmarierite crystals. The crystals are associated with good sized and well formed Becquerelite crystals. Shinkolobwe is the type locality for both of Fourmarierite and Becquerelite. Ex. Carnegie Museum Collection.
MD-201137 - Lepersonnite-(Gd), Studtite, Curite, Uraninite - - Archived Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) thumbnail, 2.4 x 1.5 x 2 cm.
2.4 x 1.5 x 2 cm. Lepersonnite-(Gd) is a very rare REE-uranyl carbonate from Shinkolobwe. Here it is intergrown in the yellow Studtite clusters (surrounded by smaller Uranophane xls). The difference is obvious and visible under magnification where the Lepersonnite-(Gd) forms flat crystals while the Studtite forms needles. The orange mineral is Curite. The Shinkolobwe mine is closed since the late 1950’s and is the type locality for all three of these: Lepersonnite-(Gd), Studtite and Curite. This Photo was Mindat.org Photo of the Day - 7th Feb 2010
MD-201143 - Becquerelite, Uranophane, Uraninite - - Archived Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) miniature, 5 x 4.5 x 2.2 cm.
5 x 4.5 x 2.2 cm. Shinkolobwe is the type locality for Becquerelite where it forms lathe-like, yellow to orange, flat-terminated crystals. Here the mineral is associated with Uranophane in very tiny needles. Sometimes the crystals cluster together like shown in the photo, and they reach on this specimen 5 mm. This is a good reference piece for a locality that is closed since more than 50 years.
MD-201157 - Masuyite, Uraninite - - Archived Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) miniature, 4.9 x 3.2 x 1.9 cm.
4.9 x 3.2 x 1.9 cm. Microcrystalline and acrystalline masuyite (TYPE LOCALITY) here occurs very richly, in unusual concentration in fact, coating sharp crystals of cubic uraninite (to about 1 cm). Overall a pretty specimen, and quite significant for the locality as well. From the prominent radioactive mineral collection of Alain Caubel, of France.
MD-20883 - Rutherfordine, Uraninite - - Archived Uluguru Mts (Uruguru Mts), Morogoro Region, Tanzania thumbnail, 1.5 x 1.5 x 1.2 cm
A thin coating of yellowish rutherfordine completely covers a relatively large uraninite cube on this rare old treasure from the radioactive deposits that extend a bit into Tanzania, but is seldom accessible to collectors these days! Ex. Carl Davis Thumbnail Collection 1.5 x 1.5 x 1.2 cm
MD-214948 - Schoepite, Curite, Uraninite - - Archived Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) cabinet, 14.0 x 10.0 x 7.2 cm.
14.0 x 10.0 x 7.2 cm. A very large and colourful specimen from the Shinkolobwe mine. The yellow mineral used to be called Ianthinite but since the discovery in the 1950’s has turned into Epiianthinite; which is, in fact, now realized to be the same species as previously known Schoepite. It is a sort of pseudomorph because the crystal habit of the Ianthinite can still be seen (the change occurred after the specimen was recovered, post-mining). Associated is also a 10 mm large cluster of red Curite crystals nicely nestled in the yellow Epiianthinite. It is beautiful. A very heavy specimen due to the matrix consisting of pure Uraninite. Shinkolobwe is the type locality for the Schoepite and the Curite, a mine closed since decades. It used to be on display at the Carnegie Museum, just because of the gorgeous colour mix. This specimen was removed from the display in the early 1990's because it was considered "too hot" and sold to now-deceased dealer Gilbert Gauthier. Before it went to Carnegie, it came from the famous dealer Dr. F. Krantz, in Bonn. Type Locality for both species.
MD-214965 - Studtite, Fourmarierite, Uranophane, Uraninite - - Archived Shinkolobwe Mine (Kasolo Mine), Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) thumbnail, 2.8 x 2.2 x 2.5 cm.
2.8 x 2.2 x 2.5 cm. Although this is a small specimen of Uraninite it is well covered with Studtite sprays up to 3 mm on a bed of Uranophane with orange Fourmarierite. The contrast is amazing and helps to make this a significant, photogenic, Studtite specimen. Fourmarierite is best known as red pseudo-hexagonal crystals but also as orange needles or "grains". On this specimen it is seen as this orange form which is much rarer but mostly overseen or taken for Curite and thus mislabeled if ever it was found in some collections. Shinkolobwe is the Type Locality for the Studtite and the Fourmarierite, a mine closed since decades.
MD-218648 - Uraninite - - Archived Northern Territory, Australia small cabinet, 5.9 x 2.5 x 2.4 cm.
5.9 x 2.5 x 2.4 cm. This rich specimen of uraninite (Uranium Oxide, an ore of uranium) came out of the A.L. Kidwell Collection, and the Kidwell label lists the locality as just "Northern Territory" without specifying which of the several localities in this area it came from - so we will not venture a guess. It is quite rich with both uraninite and its alteration products.
MD-225146 - Uraninite - - Archived Swamp #1 quarry, Topsham, Sagadahoc Co., Maine, USA thumbnail, 2.7 x 2.4 x 1.4 cm.
2.7 x 2.4 x 1.4 cm. These specimens found in the late 1950s represent the pinnacle of crystallized uraninite, to most collectors. This beautiful large thumbnail features a dominant 1.5-cm-across crystal perched atop smaller ones, on matrix. Ex. Ken Hollman Collection.
MD-34299 - Uraninite - - Archived Orange River, Northern Cape Province, South Africa thumbnail, 2.2 x 2.2 x 1.1 cm
This is a very interesting crystal with excellent form and relatively large size for the species, from a locality I would not have thought of at first for such a beast. One label notes it was found in 1930. It seems to have been stabilized with shellac or glue at the base in particular, but I do not think that is a repair. Anyways, a neat piece in many ways! 2.2 x 2.2 x 1.1 cm
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