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Monazite

A group of related mineral species
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About MonaziteHide

Formula:
REE(PO4)
Member of:
Name:
From the Greek μονάζει "to be solitary" in allusion to the rarity of its presence in the first known localities.
Members of the Monazite 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.

For "monazite-(Y)", see písekite-(Y) (this has a pyrochlore structures and thus is not a member of this group).




Unique IdentifiersHide

Mindat ID:
2750
Long-form identifier:
mindat:1:1:2750:8
GUID
(UUID V4):
cd1b7311-2022-46a8-8cb3-614408bc71c6

Chemistry of MonaziteHide

Mindat Formula:
REE(PO4)

Age distributionHide

Recorded ages:
Paleoarchean to Neogene : 3254 ± 72 Ma to 5.4 ± 0.5 Ma - based on 267 recorded ages.

Crystallographic forms of MonaziteHide

Crystal Atlas:
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Monazite no.1 - Goldschmidt (1913-1926)
Monazite no.37 - Goldschmidt (1913-1926)
Monazite no.116 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0001698Monazite-(Ce)Ni Y, Hughes J M, Mariano A N (1995) Crystal chemistry of the monazite and xenotime structures American Mineralogist 80 21-2619950293
0001700Monazite-(Ce)Ni Y, Hughes J M, Mariano A N (1995) Crystal chemistry of the monazite and xenotime structures Ce(PO4) American Mineralogist 80 21-2619950293
0019170Monazite-(Ce)Mooney R C L (1948) Crystal structures of a series of rare earth phosphates Journal of Chemical Physics 16 1003-10031948synthetic0293
0001699Monazite-(La)Ni Y, Hughes J M, Mariano A N (1995) Crystal chemistry of the monazite and xenotime structures La(PO4) American Mineralogist 80 21-2619950293
0001702Monazite-(Nd)Ni Y, Hughes J M, Mariano A N (1995) Crystal chemistry of the monazite and xenotime structures Nd(PO4) American Mineralogist 80 21-2619950293
0001703Monazite-(Sm)Ni Y, Hughes J M, Mariano A N (1995) Crystal chemistry of the monazite and xenotime structures Sm(PO4) American Mineralogist 80 21-2619950293
CIF Raw Data - click here to close

Synonyms of MonaziteHide

Other Language Names for MonaziteHide

Dutch:Monaziet
French:Monazite
Italian:Monazite
Japanese:モナズ石
Norwegian:Urdit
Polish:Monacyt
Portuguese:Monazite
Simplified Chinese:独居石
磷铈镧矿
Spanish:Monazita
Swedish:Monazit
Tajik (Cyrillic Script):Монтсит
Traditional Chinese:獨居石
磷鈰鑭礦
Turkish:Monazit
Ukrainian:Монацит

Relationship of Monazite to other SpeciesHide

Member of:
Other Members of this group:
CheraliteCaTh(PO4)2Mon. 2/m
Gasparite-(Ce)Ce(AsO4)Mon. 2/m
Gasparite-(La)La(AsO4)Mon. 2/m
HuttoniteThSiO4Mon. 2/m
Monazite-(Gd)Gd(PO4)Mon.
RooseveltiteBi(AsO4)Mon. 2/m
Unnamed (Nd-dominant Gasparite)NdAsO4Mon. 2/m
Group Members:
Monazite-(Ce) Ce(PO4)Mon. 2/m
Monazite-(La) La(PO4)Mon. 2/m
Monazite-(Nd) Nd(PO4)Mon. 2/m
Monazite-(Sm) Sm(PO4)Mon. 2/m

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for MonaziteHide

References for MonaziteHide

Reference List:

Localities for MonaziteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListShow

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