Monazite-(Ce) is the most common representative of the monazite group. It is the cerium-dominant analogue of

monazite-(La) Monazite-(La) is a relatively rare representative of the monazite group, with lanthanum being the dominant rare earth element in its structure. As such, it is the lanthanum analogue of monazite-(Ce), monazite-(Nd) Monazite-(Nd) is a relatively ra ...

monazite-(Nd) Monazite-(Nd) is a relatively rare representative of the monazite group, with neodymium being the dominant rare earth element The rare-earth elements (REE), also called the rare-earth metals or (in context) rare-earth oxides or sometimes the ...

, and

monazite-(Sm) Monazite-(Sm) is an exceedingly rare representative of the monazite group, with samarium being the dominant rare earth element in its structure. It is the samarium analogue of monazite-(Ce), monazite-(La), and monazite-(Nd). It is only the second ...

. It is also the phosphorus analogue of gasparite-(Ce). The group contains simple rare earth phosphate minerals with the general formula of A''T''O₄, where A = Ce, La, Nd, or Sm (or, rarely, Bi), and B = P or, rarely, As. The A site may also bear Ca and Th. Mindat, Monazite Group, https://www.mindat.org/min-29313.html

References

{{reflist Cerium minerals Lanthanide minerals Phosphate minerals Monoclinic minerals Minerals in space group 14