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Monazite is a primarily reddish-brown phosphate mineral that contains rare-earth elements. Due to variability in composition, monazite is considered a group of minerals. [3] The most common species of the group is monazite- (Ce), that is, the cerium-dominant member of the group. [4] It occurs usually in small isolated crystals.
Monazite powder, a rare earth and thorium phosphate mineral, is the primary source of the world's thorium. India's three-stage nuclear power programme was formulated by Homi Bhabha, the well-known physicist, in the 1950s to secure the country's long term energy independence, through the use of uranium and thorium reserves found in the monazite sands of coastal regions of South India.
Monzonite is an igneous intrusive rock, formed by slow cooling of underground magma that has a moderate silica content and is enriched in alkali metal oxides. Monzonite is composed mostly of plagioclase and alkali feldspar. Syenodiorite is an obsolescent term for monzonite [1] or for monzodiorite. [2] Larvikite is a particular form of monzonite.
Monazite geochronology. Illustration showing age map and zonation pattern of a monazite grain. Brighter colour represents older age. Edited after Williams, 1999. [1] Monazite geochronology is a dating technique to study geological history using the mineral monazite. It is a powerful tool in studying the complex history of metamorphic rocks ...
Quartz monzonite. Quartz monzonite is an intrusive, felsic, igneous rock that has an approximately equal proportion of orthoclase and plagioclase feldspars. It is typically a light colored phaneritic (coarse-grained) to porphyritic granitic rock. The plagioclase is typically intermediate to sodic in composition, andesine to oligoclase.
Monazite- (Ce) (CePO4) is the most common representative of the monazite group. It is the cerium-dominant analogue of monazite- (La), monazite- (Nd), and monazite- (Sm). It is also the phosphorus analogue of gasparite- (Ce). [3] The group contains simple rare earth phosphate minerals with the general formula of AXO 4, where A = Ce, La, Nd, or ...
Mineral symbols are most commonly represented by three-lettered text symbols, although one-, two- and four-lettered symbols also exist. Four methods of nomenclature are used: [ 3 ][ 5 ] The initial letters of a name, for example: cyanotrichite: Cya and mitscherlichite: Mits. A combination considered characteristic of the mineral name, for ...
Monazite powder, a rare earth and thorium phosphate mineral, is the primary source of the world's thorium. A Stage III reactor or an Advanced nuclear power system involves a self-sustaining series of thorium-232–uranium-233 fuelled reactors.