Many of the specimens below are available for sale upon special request and are priced from $1,000 and up, depending upon the size and rarity of the specimen. Please contact us for more information. Due to Customs regulations, international sales are not available for these specimens.
Huge Uraninite Specimen Possibly Collected by Martin Klaproth in the late 1700’s
Martin Klaproth discovered Uranium in 1789. This is a large and very active specimen of Pitchblende that dates to Martin Klaproth and the location where he collected the mineral. It also has a label from the museum that purchased Klaproth’s meteorite and Uranium-bearing mineral specimens. The history on the label for this specimen is that it uses an old obscure term for pitchblende, “Uranpecherz" that was discontinued around 1820. Thus, this specimen may have been collected by Martin Klaproth, as he died in 1817 and his collection was acquired by the museum prior to his death.
Francevillite from the Muoana Mine in Gabon
Francevillite was first found in the Oklo area of Gabon where the only known natural nuclear fission reactor is loacted. it was discovered in 1957 and is named after the nearby city of Franceville. Evidence suggests that that the Oklo deposit where the Mounana Mine is located acted as a natural nuclear fission reactor, with self-sustaining nuclear chain reactions. The evidence for this is that some of the mined uranium in the locality has a lower concentration of uranium-235 than expected. The natural reactor operated at Oklo operated about 2.0–1.7 billion years ago. At that time the natural uranium had a concentration of about 3% 235U and could have gone critical with local water acting as a neutron moderator. This Francevillite specimen is 13 x 8 x 5 cm in size and weighs 805 grams. It measures about 350K CPM with a Ludlum 44-9 probe.
It was from the Shinkolobwe mine in the Katanga province of the Democratic Republic of the Congo that the United States acquired Uranium to supply the Manhattan Project. This area, considered a freak of nature, has some of the richest, most beautiful and hottest Uranium minerals to be found anywhere in the world. Each of the Uranium minerals below are from this region of the Congo and are from old collections that were put together before the mines were officially closed, flooded and sealed. As shown in the photos below, the colors and activity levels of these specimens are truly unique.
Becquerelite, Curite, Uraninite, Uranophane. 188 grams. 460,000 CPM and 200 mR/hr.
Uraninite, Curite and Soddyite. 88 grams. 440,000 CPM and 180 mR/hr.
Curite. 72 grams. 400,000 CPM and 160 mR/hr.
Sklodowskite. 105 grams. 300,000 CPM and 125 mR/hr.
Vandenbrandeite, Schoepite and Cuprosklodowskite. 65 grams. 300,000 CPM and 125 mR/hr.
Torbernite. 652 grams. 400,000 CPM and 175 mR/hr.
Cuprosklodowskite with Malachite: 120 grams. 120,000 CPM and 35 mR/hr.
Torbernite: 54 grams. 300,000 CPM and 105 mR/hr.
Rutherfordine and Schoepite: 58 grams. 150,000 CPM and 55 mR/hr.
Vandenbrandeite from Zaire: 33 grams. 3125,000 CPM and 35 mR/hr
Kasolite: 18 grams. 220,000 CPM and 70 mR/hr.
Parsonite: 35 grams. 320,000 CPM and 125 mR/hr.
Torbernite: 140 grams. 420,000 CPM and 175 mR/hr.
Bags of Uranium ore were ferried by miners working at Port Radium from the Eldorado mine across Great Bear Lake. The crushed ore was refined in Port Hope, Ontario. This ore also fed the Manhattan project. As shown in the photos below, these specimens are incredibly high grade examples of essentially pure Pitchblende / Uraninite. The last two photos from the January 14, 1946 issues of “Life Magazine” show the the mines in the area after the end of World War II.
Uraninite with Chalcopyrite from Great Bear Lake. 378 grams. 200,000 CPM and 50 mR/hr.
Pitchblende with Slight Botryoidal Texture from Great Bear Lake. 156 grams. 320,000 CPM and 125 mR/hr.
Pitchblende from Great Bear Lake. 112 grams. 340,000 CPM and 130 mR/hr.
Cut Slab of Pitchblende from Great Bear Lake. 21 grams. 280,000 CPM and 100 mR/hr.
Uraninite with Gold from Great Bear Lake. 65 grams. 290,000 CPM and 100 mR/hr.
Huge Uraninite from Dennison Mine at Elliott Lake Ontario. Over 3,600 grams (8 pounds). 380,000 CPM and 160 mR/hr.
Thorite from Bancroft Ontario. 554 grams. 110,000 CPM and 40 mR/hr.
Classic example of pure, rich, heavy and dense Uraninite from Saxony Germany. Wismut was a uranium mining company active in Saxony during the cold war. It produced a total of 230,400 tons of uranium between 1947 and 1990 and made East Germany the fourth largest producer of uranium ore in the world at the time.
Uraninite from Schlema, Germany. 240,000 CPM and 80 mR/hr.
The Czech Republic
This region of the world in considered the birthplace of large-scale Uranium mining. The botryoidal specimens from these locations are incredibly active. Several localities in Czechoslovakia were mined by the former Soviet Union during the cold war. The largest deposits were in Pribram and these locations yielded about 50,000 tons of Uranium.
Botryoidal Pitchblende from Bukov, Rozzna Deposit in the Czech Republic: 93 grams. 200,000 CPM and 50 mR/hr.
Uraninite from Mine #3, Kamenna Shaft, Pribram, Czech Republic: 86 grams. 250,000 CPM and 90 mR/hr.
Uraninite from Mine #3, Kamenna Shaft, Pribram, Czech Republic: 147 grams. 250,000 CPM and 90 mR/hr.
Botryoidal Pitchblende / Uraninite from Pribram in the Czech Republic: 125 grams. 440,000 CPM and 175 mR/hr.
Pitchblende from Pribram in the Czech Republic: 115 grams. 400,000 CPM and 150 mR/hr.
Botryoidal Uraninite from Pribram in the Czech Republic: 148 grams. 340,000 CPM and 125 mR/hr.
Radianbaryte from Lahost in the Czech Republic: 362 grams. 2,500 CPM and 1 mR/hr.
Pitchblende from Cornwall England. 107 grams. 100,000 CPM and 30 mR/hr.
Pitchblende from Cornwall England. 178 grams. 200,000 CPM and 50 mR/hr.
The United States
Two stunningly beautiful and superbly active historical specimens of Schoepite Gummite and dendritic Uraninite from the Ruggles Mine in Grafton New Hampshire. The top three photos show a superior slab specimen that was collected by the well-known geologist Benjamin Shaub in 1938 (see photos for additional details). The next three show a massive 4082 gram (nine pound) uncut and unpolished chunk of the same material.
The next two photos are from the famous Mi Vida mine. On July 6, 1952, Charlie Steen found an extremely large and very high grade deposit of Pitchblende in Lisbon Valley, southeast of Moab, Utah. His story was one of incredible perseverance through hardship until he found what he was looking for. He named it the "Mi Vida" mine (My Life), and it was the first big strike of the uranium boom. Steen made millions off his claims, which prompted a "Uranium Rush" of prospectors into the Four Corners region. Those who knew him describe him as a very generous man who gave back to the community in terms of education and housing for workers. He died in 2006 with most of his fortune lost to various investments. The ashes of Charlie Steen and his wife Minnie Lee were scattered at the Mi Vida site. The mine is no longer active.
The Mi Vida specimens are followed by a very rare high grade drill core sample is from the Hack #2 mine Coconino, Arizona. The sample was taken in 1965. Finally, the photo at the bottom of the page shows an enormous 105 pound piece of petrified wood with Carnotite from the Anaconda mine in New Mexico. Note the penny in the first photo for size reference. This piece was collected decades ago by a mine foreman working in the Uranium mine. The piece looks like a recent piece of tree trunk until you touch it and then try to lift it. It is SOLID rock - and replete with Carnotite and perhaps some Uraninite too in a particularly hot area of the specimen (the last photo in the series).
It is difficult to gauge or report the radioactivity of this specimen due to its sheer size. Any Geiger counter measure obviously underestimates the radioactivity of the specimen in its totality because the probe on the counter covers such a small area of the surface. At the surface, the specimen ranges up to 100,000 CPM and 25 mR/hr. And, it measures about 200 to 300 CPM from several feet away. There are cracks running through the specimen as can be seen in the photos as would be expected with a specimen that is perhaps as much as 150 million years old (exact carbon dating not available).
Polished Slab of Schoepite, Gummite and Uraninite. 722 grams. 450,000 CPM and 200 mR/hr.
Pitchblende from Charlie Steen's Mi Vida mine: 93 grams. 300,000 CPM and 125 mR/hr.
Pitchblende from Charlie Steen's Mi Vida Mine: 477 grams. 140,000 CPM and 50 mR/hr.
Drill Core Sample of High Grade Uraninite from the Hack #2 Mine in Arizona. 92 grams. 200,000 CPM and 60 mR/hr.
Pitchblende from Schwartzwalder Mine in Colorado: 210 grams. 200,000 CPM and 50 mR/hr.
Pitchblende with Autunite from Crooks Gap Wyoming: 321 grams. 340,000 CPM and 140 mR/hr.
Pitchblende with Autunite from Crooks Gap Wyoming: 268 grams. 260,000 CPM and 90 mR/hr.