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- Uraninite abstract "Uraninite is a radioactive, uranium-rich mineral and ore with a chemical composition that is largely UO2, but also contains UO3 and oxides of lead, thorium, and rare earth elements. It is most commonly known as pitchblende (from pitch, because of its black color, and blende, a term used by German miners to denote minerals whose density suggested metal content, but whose exploitation was, at the time they were named, either impossible or not economically feasible). The mineral has been known at least since the 15th century from silver mines in the Ore Mountains, on the German/Czech border. The type locality is the town of Jáchymov, on the Czech side of the mountains, where F.E.Brückmann described the mineral in 1727. Pitchblende from the Johanngeorgenstadt deposit in Germany was used by M. Klaproth in 1789 to discover the element uranium.All uraninite minerals contain a small amount of radium as a radioactive decay product of uranium. Uraninite also always contains small amounts of the lead isotopes 206Pb and 207Pb, the end products of the decay series of the uranium isotopes 238U and 235U respectively. Small amounts of helium are also present in uraninite as a result of alpha decay. Helium was first found on Earth in uraninite after having been discovered spectroscopically in the Sun's atmosphere. The extremely rare elements technetium and promethium can be found in uraninite in very small quantities (about 200 pg/kg and 4 fg/kg respectively), produced by the spontaneous fission of uranium-238.".
- Uraninite thumbnail Pitchblende_schlema-alberoda.JPG?width=300.
- Uraninite wikiPageID "43532".
- Uraninite wikiPageRevisionID "603609755".
- Uraninite caption "Pitchblende from Niederschlema-Alberoda deposit, Germany".
- Uraninite category Oxide_minerals.
- Uraninite cleavage "Indistinct".
- Uraninite color "Steel-black to velvet-black, brownish black, pale gray to pale green; in transmitted light, pale green, pale yellow to deep brown".
- Uraninite diaphaneity "Opaque; transparent in thin fragments".
- Uraninite formula "Uranium dioxide or uranium(IV) oxide".
- Uraninite fracture "Conchoidal to uneven".
- Uraninite gravity "10.63".
- Uraninite habit "Massive, botryoidal, granular. Octahedral crystals uncommon.".
- Uraninite hasPhotoCollection Uraninite.
- Uraninite luster "Submetallic, greasy, dull".
- Uraninite mohs "5".
- Uraninite name "Uraninite".
- Uraninite opticalprop "Isotropic".
- Uraninite other "Radioactive: greater than 70 Bq/g".
- Uraninite streak "Brownish black, gray, olive-green".
- Uraninite strunz "4".
- Uraninite symmetry "180.0".
- Uraninite symmetry "H-M symbol:".
- Uraninite symmetry "Isometric, hexoctahedral".
- Uraninite system Cubic_crystal_system.
- Uraninite unitCell "a = 5.4682 Å; Z = 4".
- Uraninite var "Pitchblende".
- Uraninite var1text "Massive".
- Uraninite wordnet_type synset-mineral-noun-1.
- Uraninite subject Category:Cubic_minerals.
- Uraninite subject Category:Oxide_minerals.
- Uraninite subject Category:Radioactive_minerals.
- Uraninite subject Category:Uranium_minerals.
- Uraninite type ChemicalSubstance.
- Uraninite type Mineral.
- Uraninite type ChemicalObject.
- Uraninite type Thing.
- Uraninite comment "Uraninite is a radioactive, uranium-rich mineral and ore with a chemical composition that is largely UO2, but also contains UO3 and oxides of lead, thorium, and rare earth elements. It is most commonly known as pitchblende (from pitch, because of its black color, and blende, a term used by German miners to denote minerals whose density suggested metal content, but whose exploitation was, at the time they were named, either impossible or not economically feasible).".
- Uraninite label "Pechblenda".
- Uraninite label "Pechblenda".
- Uraninite label "Pechblende".
- Uraninite label "Uraniniet".
- Uraninite label "Uraninit".
- Uraninite label "Uraninit".
- Uraninite label "Uraninite".
- Uraninite label "Uraninite".
- Uraninite label "Настуран".
- Uraninite label "يورانينيت".
- Uraninite label "瀝青鈾礦".
- Uraninite label "閃ウラン鉱".
- Uraninite sameAs Uraninit.
- Uraninite sameAs Uraninit.
- Uraninite sameAs Ουρανινίτης.
- Uraninite sameAs Pechblenda.
- Uraninite sameAs Pechblende.
- Uraninite sameAs Pitchblende.
- Uraninite sameAs Uraninite.
- Uraninite sameAs 閃ウラン鉱.
- Uraninite sameAs 우라니나이트.
- Uraninite sameAs Uraniniet.
- Uraninite sameAs Uraninit.
- Uraninite sameAs Pechblenda.
- Uraninite sameAs m.0bxnx.
- Uraninite sameAs Q206467.
- Uraninite sameAs Q206467.
- Uraninite wasDerivedFrom Uraninite?oldid=603609755.
- Uraninite depiction Pitchblende_schlema-alberoda.JPG.
- Uraninite isPrimaryTopicOf Uraninite.
- Uraninite name "Uraninite".
