uraninite वाक्य
उदाहरण वाक्य
मोबाइल
- Clarkeite forms by oxidation and replacement of uraninite late during pegmatite crystallization.
- It occurs as a secondary mineral as a weathering product of uraninite.
- Ore minerals are coffinite, uraninite, and uranium-bearing apatite.
- Ore consists of uraninite with lesser brannerite and thucholite.
- Boltwoodite occurs as secondary silicate alteration crusts surrounding uraninite and as fracture fillings.
- Small amounts of helium are also present in uraninite as a result of alpha decay.
- The uraninite here was conglomerated with garnet.
- It occurs associated with uraninite, becquerelite, fourmarierite, phosphouranylite, gypsum and fluorite.
- All uraninite minerals contain a small amount of radium as a radioactive decay product of uranium.
- Uranium minerals in the Witwatersrand deposits are typically uraninite with lesser uranothorite, brannerite, and coffinite.
- It occurs as an alteration product of uraninite and primary selenium-bearing sulfides, such as penroseite.
- They extracted the radium compound from uraninite and published the discovery at the French Academy of Sciences five days later.
- Although uraninite-bearing granite pegmatites are common, clarkeite is rare and occurs intimately intergrown with other uranium minerals.
- It is especially closely associated with torbernite, but is also found amongside autunite, meta-autunite and uraninite.
- They could be a defining constituent, such as uranium in uraninite, autunite, and carnotite, or as trace impurities.
- It is found in many minerals including uraninite ( most common uranium ore ), autunite, uranophane, torbernite, and coffinite.
- In nature, radium is found in uranium ores in trace amounts as small as a seventh of a gram per ton of uraninite.
- Primary ore minerals are uraninite and pitchblende, which occur as cavity fills and coatings on quartz grains within permeable sandstone breccias within the pipe.
- It occurs associated with opal, chalcedony, calcite, gypsum, fluorite, uraninite, thorogummite, uranophane, boltwoodite, carnotite and margaritasite.
- Helium was first found on Earth in uraninite after having been discovered fg / kg respectively ), produced by the spontaneous fission of uranium-238.
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