pitchblende

How To Use pitchblende In A Sentence

• The story of the Curie's four-year struggle to purify, purify, and purify over again the components of pitchblende has now been told in popular novels, plays, and motion pictures.
• Polonium was the first element to be discovered by Marie Curie and her husband Pierre as they analyzed pitchblende, an ore of uranium, in 1898.
• It is worth recalling the history of this treatment, which began when American, James Douglas, discovered extensive pitchblende deposits on his Western mining properties.
• In their attempt to separate radium from bismuth, both contained in pitchblende, Marie and Pierre found that by crystallizing the chloride of radioactive barium from a solution, they obtained crystals that were more radioactive and richer in radium than the chloride which remained resolved. Trafficking Materials and Gendered Experimental Practices: Radium Research in Early 20th Century Vienna
• The most common ore of the element is pitchblende, although it is also present in other minerals, such as uraninite, carnotite, uranophane, and coffinite.
• The principal ore mineral is uranophane, a hydrated calcium-uranium silicate, which is believed to be an oxidation product of pitchblende. The Economic Aspect of Geology
• He already knew ore -- the glossy, sub-metallic, pitchy black luster of uraninite or pitchblende; the yellows of autunite and carnotite; the variant and confusing greens of tobernite. First Lensman
• The hint of a new element in pitchblende materialized in July 1898, when the couple reported gathering a substance that was 400 times more active than metallic uranium.
• The Curies resolved to learn as much as they could about the source of radioactivity in pitchblende, the ore with which Becquerel originally worked.
• But an unexpected fact was noted: certain minerals (pitchblende, chalcolite, autunite) had a greater activity than might be expected on the basis of their uranium or thorium content. Marie Curie - Nobel Lecture