Identification and Introducing of Monazite in Jurassic

Category Economic geology & mineral exploration
Group GSI.IR
Location 21th symposium on geosciences
Holding Date 21 May 2008

Abstract:
      Monazite is a comparatively rare mineral, a phosphate of rare-earth elements essentially (Ce, La, Y, Th, Eu) Po4. Monazite occurs as an accessory in granites, gneisses, aplites and pegmatites, and as rolled grains in the sands derived from the decomposition of such rocks. It is concentrated in sands because of its resistance to chemical attack and its high specific gravity, and is thus associated with resistant and heavy minerals such as magnetite, ilmenite, rutile, zircon and apatite. This mineral is growing as inclusion in other minerals such as apatite.
   Monazite is producing in sedimentary rocks of Iran at the first time, based on geochemiclas and heavy minerals data, it occurs in placer deposits and Jurassic shaly rocks, and its physical properties is different from igneous type monazite.

General:
     Monazite is a comparatively rare mineral, a phosphate of rare-earth elements essentially (Ce, La, Y, Th, Eu) po4. Monazite occurs as an accessory in granites, gneisses, aplites and pegmatites, and as rolled grains in the sands derived from the decomposition of such rocks. It is concentrated in sands because of its resistance to chemical attack and its high specific gravity, and is thus associated with resistant and heavy minerals such as magnetite, ilmenite, rutile, zircon and apatite. This mineral is growing as inclusion in other minerals such as apatite.
   Monazite is producing in sedimentary rocks of Iran at the first time, based on geochemiclas and heavy minerals data it occurs in placer deposits and Jurassic shaly rocks. And its physical properties is different from igneous type monazite

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