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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), and monazite-(Sm). It is also the phosphorus analogue of gasparite-(La). The group contains simple rare earth phosphate minerals with the general formula of ATO₄, 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.

References

1. Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
2. Mindat, Monazite-(La), https://www.mindat.org/min-2752.html
3. Handbook of Mineralogy, Monazite-(La), http://www.handbookofmineralogy.org/pdfs/monazite-(La).pdf
4. Mindat, Monazite-(La), https://www.mindat.org/min-2752.html
5. Mindat, Monazite Group, https://www.mindat.org/min-29313.html

• Lanthanum minerals
• Phosphate minerals
• Monoclinic minerals
• Minerals in space group 14