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included Th, Si, and U. Also, minor amounts of Fe, Ca, Zr, and Hf were noticed as substitution in uranothorite crystal structure. 4.2.4 Sulfide minerals Pyrite is the most common sulfide minerals. The studied pyrite grains have metallic luster brass

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Pollack Periodica
Authors: Jamal Eldin F. M. Ibrahim, Emese Kurovics, Mohammed Tihtih, and László A. Gömze

− tetrahedral, which are linked together by shared oxygen atoms, to make a systematic crystal structure with various interconnected open voids where foreign atoms or molecules can be accommodated [ 13 , 14 ]. The replacement of Si by Al causes the negative

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