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Uraninite crystals from Topsham, Maine (size: 2.7 × 2.4 × 1.4 cm) Uraninite is a major ore of uranium. Some of the highest-grade uranium ores in the world were found in the Shinkolobwe mine in the Democratic Republic of the Congo (the initial source for the Manhattan Project) and in the Athabasca Basin in northern Saskatchewan, Canada.
Uraninite, an ore that is mostly uranium dioxide (UO 2) Yellowcake forgery, fraudulently depicted Saddam Hussein trying to buy uranium powder; Sequoyah Fuels Corporation, an American company involved in yellowcake processing; COMINAK, a Niger uranium mining and processing company; SOMAIR, a Niger uranium mining and processing company
Autunite (hydrated calcium uranyl phosphate), with formula Ca(UO 2) 2 (PO 4) 2 ·10–12H 2 O, is a yellow-greenish fluorescent phosphate mineral with a hardness of 2– 2 + 1 ⁄ 2. [4] [5] Autunite crystallizes in the orthorhombic system and often occurs as tabular square crystals, commonly in small crusts or in fan-like masses.
Uranium minerals are typically uraninite with lesser uranothorite, brannerite, and coffinite. The uranium is especially concentrated along thin carbonaceous seams or carbon leaders. Strong regional scale alteration consists of pyrophyllite, chloritoid, muscovite, chlorite, quartz, rutile, and pyrite. The main elements associated with the ...
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[12] [22] Uranium is found in hundreds of minerals, including uraninite (the most common uranium ore), carnotite, autunite, uranophane, torbernite, and coffinite. [12] Significant concentrations of uranium occur in some substances such as phosphate rock deposits, and minerals such as lignite , and monazite sands in uranium-rich ores [ 12 ] (it ...
How to Make My 20-Minute Tomato Orzo Soup. To make four to five servings, you’ll need: 2 tablespoons extra-virgin olive oil. 3 cups fresh or frozen mirepoix (about 1 pound)