monazite-(Sm)
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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 known mineral with samarium being the mineral-forming element, after florencite-(Sm). 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.
Wikidata facts
Show 5 more facts
- chemical formula
- SmPO₄
- Nickel-Strunz 9th edition (updated 2009)
- 8.AD.50
- crystal system
- monoclinic crystal system
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 8.AD.50
- IMA Mineral Symbol
- Mnz-Sm
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Encyclopedic overview
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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 known mineral with samarium being the mineral-forming element, after florencite-(Sm). 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==
Excerpted from Wikipedia’s “monazite-(Sm)” article, available under the CC BY-SA 4.0 licence.