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Monazite Group
A group of related mineral species
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Members of theMonazite Group with dominant REE and P:Monazite-(Ce),Monazite-(La),Monazite-(Nd),Monazite-(Sm),Monazite-(Gd).
The name monazite, without a elemental suffix, was the accepted name for all material in this group, regardless of the REE-bearing components' relative abundance. The suffixes were added when the naming convention for all REE-bearing members was devised and implemented.
The great majority of "monazite" is monazite-(Ce), the La-, Nd-, Sm- and Gd-dominant members are all very rare.
Monazite usually contains small amounts of Th or sometimes U, both making it radioactive, and making it very useful forgeochronology.
For "monazite-(Y)", seepísekite-(Y) (this has a pyrochlore structure and thus is not a member of the monazite group).
Visit gemdat.org forgemological information about Monazite Group.
The name monazite, without a elemental suffix, was the accepted name for all material in this group, regardless of the REE-bearing components' relative abundance. The suffixes were added when the naming convention for all REE-bearing members was devised and implemented.
The great majority of "monazite" is monazite-(Ce), the La-, Nd-, Sm- and Gd-dominant members are all very rare.
Monazite usually contains small amounts of Th or sometimes U, both making it radioactive, and making it very useful forgeochronology.
For "monazite-(Y)", seepísekite-(Y) (this has a pyrochlore structure and thus is not a member of the monazite group).
Visit gemdat.org forgemological information about Monazite Group.
