uraninite वाक्य
उदाहरण वाक्य
मोबाइल
- Piretite forms as crusts in association with an orange masuyite-like U-Pb oxide on the surface of uraninite samples ( Vochten, 1996 ).
- Uranium is found in hundreds of minerals, including uraninite ( the most common uranium ore ), carnotite, autunite, uranophane, torbernite, and coffinite.
- It occurs in association with columbite, zircon, monazite, uraninite, aeschynite, magnetite, albite, topaz, beryl, garnet, muscovite and biotite.
- Quartz pebble conglomerate hosted uranium deposits formed from the transport and deposition of uraninite in a fluvial sedimentary environment and are defined as stratiform and stratabound paleoplacer deposits.
- Uranium mostly occurs in the Earth's crust as a mixture of its oxides in the minerals uraninite, which is also called pitchblende because of its black color.
- Common uranous minerals include : uraninite; pitchblende ( a crystalline variant of uraninite ); and coffinite " ( Smith, Hutchinson and Blackwell, 1984 )"
- Common uranous minerals include : uraninite; pitchblende ( a crystalline variant of uraninite ); and coffinite " ( Smith, Hutchinson and Blackwell, 1984 )"
- While studying uraninite, on 21 December 1898, barium compounds, although some properties, such as the color of the flame test and spectral lines, were much different.
- It occurs as a hydrothermal mineral in medium temperature veins association with skutterudite, safflorite, lollingite, nickeline, native bismuth, native silver, algodonite, domeykite and uraninite.
- In nature, radium is found in uranium and ( to a lesser extent ) thorium ores in trace amounts as small as a seventh of a gram per ton of uraninite.
- Graham's law was the basis for separating 235 U from 238 U found in natural uraninite ( uranium ore ) during the Manhattan Project to build the first atomic bomb.
- Uranium is present as uraninite, coffinite, and arkosic sandstone, congolmerate, and in sediments interbedded with Miocene volcanic flows . uranium is associated with carbonaceous material, and pyrite.
- Uraninite also always contains small amounts of the lead isotopes 206 Pb and 207 Pb, the end products of the decay series of the uranium isotopes 238 U and 235 U respectively.
- In addition to uraninite it occurs associated with the rare minerals becquerelite, masuyite, schoepite, kasolite, curite, boltwoodite, vandendriesscheite, billietite, metatorbernite, fourmarierite, studtite and sklodowskite.
- At the beginning of the 20th century, Marie Curie discovered, in tons of pitchblende ore containing uraninite from Joachimsthal, the element radium, for which she won the Nobel Prize in Chemistry.
- In this way the metals can be reduced to form magnetite ( Fe 3 O 4 ), siderite ( FeCO 3 ), rhodochrosite ( MnCO 3 ), and uraninite ( UO 2 ).
- The average concentrations of protactinium in the Earth's crust is typically on the order of a few parts per trillion, but may reach up to a few parts per million in some uraninite ore deposits.
- Many of them are esoteric, like fluorite ( which is fluorescent ) and uraninite ( which is radioactive ), but club members are always on the lookout for more recognizable, brightly colored, beautifully structured stones.
- "' Schoepite "', empirical formula ( UO 2 ) 8 O 2 ( OH ) 12 " 12 ( H 2 O ) is a rare alteration product of uraninite in hydrothermal uranium deposits.
- The rivers formed braided deltas with many interlacing, slow flowing channels where all the heavy materials brought down from the mountains were deposited : large pebbles, and heavy minerals, such as gold, iron pyrite, and uraninite.
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