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Monazite

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Name:
From the Greek μονάζει "to be solitary" in allusion to the rarity of its presence in the first known localities.
Unclassified members of the Monazite Group. See also: Monazite-(Ce), Monazite-(La), Monazite-(Nd), Monazite-(Sm), Unnamed (Gd-dominant monazite).

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).

Visit gemdat.org for gemological information about Monazite.


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Age informationHide

Age range:
Paleoarchean to Neogene : 3254 ± 72 Ma to 5.4 ± 0.5 Ma - based on data given below.
Sample ages:
Sample IDRecorded ageGeologic TimeDating method
15.4 ± 0.5 MaMiocene208Pb/232U
212 MaMioceneU-Pb
3284 MaCisuralianU-Th-Pb
4297 MaCisuralianU-Th-Pb
5302 MaPennsylvanianU-Th-Pb
6308 MaPennsylvanianU-Th-Pb
7312 MaPennsylvanianU-Th-Pb
8318 MaPennsylvanianU-Th-Pb
9919 ± 25 MaTonianPb/Pb
10969 ± 12 MaTonian207Pb/206Pb
11986.3 ± 15.3 MaTonian206Pb/238U
12996.2 ± 14.7 MaTonian206Pb/238U
131012.9 ± 15.6 MaStenian206Pb/238U
141024.3 ± 12.9 MaStenian206Pb/238U
151033.7 ± 14.5 MaStenian206Pb/238U
161045 ± 6 MaStenian
171065.6 ± 15.9 MaStenian206Pb/238U
181880 MaOrosirian207Pb/235U
192645 ± 4 MaNeoarcheanU-Pb
202923 ± 66 MaMesoarcheanPb/Pb
213254 ± 72 MaPaleoarcheanPb/Pb
Sample references:
IDLocalityReference
1Jas Roux, La Chapelle-en-Valgaudemar, Hautes-Alpes, Provence-Alpes-Côte d'Azur, FranceGasquet D, Bertrand J, Paquette J, Lehmann J, Ratzov G, De Ascen?ão Guedes R, Tiepolo M, Boullier A, Scaillet S, Nomade S (2010) Miocene to Messinian deformation and hydrothermal activity in a pre-Alpine basement massif of the French western Alps: new U-Th-Pb and argon ages from the Lauzière massif, Bulletin de la Societe Geologique de France, 181, 227-241
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3Seiffen, Erzgebirge, Saxony, GermanyFörster, H. -J., Rhede, D., (2006) The Be-Ta-rich granite of Seifen (Eastern Erzgebirge, Germany): accessory mineral chemistry, composition and age of a late-Variscan Li-F granite of A-type affinity. Neues Jahrbuch für Mineralogie, Abhandlungen 182, 307-321.
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9Jack Hills, Nookawarra Station, Murchison Shire, Western Australia, AustraliaRasmussen, B., Fletcher, I.R., Muhling, J.R., and Wilde, S.A.W. (2010) In situ U-Th-Pb geochronology of monazite and xenotime from the Jack Hills belt: Implications for the age of deposition and metamorphism of Hadean zircons: Precambrian Research, v. 180, p. 26–46, doi:10.1016/j.precamres.2010.03.004
10Noble pit, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USAVolkert, R. A., Aleinikoff, J. N., Fanning, C. M. (2010) Tectonic, magmagtic, and metamorphic history of New Jersey Highlands: New Insights from SHRIMP U-PB geochronology. The Geological Society of America Memoir 206. 307-346.
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14Andover Iron Mine, Andover Township, Sussex Co., New Jersey, USA  "  "
15Noble pit, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA  "  "
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18Kutemajärvi mine, Orivesi, Western and Inner Finland Region, FinlandMänttäri I, Luukkonen A, Grönholm P (1997) Isotopic studies on the Kutemajärvi Gold Deposit, Orivesi, Southern Finland. Geological Survey of Finland, Special Paper 23 55-58.
19Hemlo gold deposit, Bomby Township, Thunder Bay District, Ontario, CanadaCorfu F, Muir T L (1989) The Hemlo-Heron Bay greenstone belt and Hemlo Au-Mo deposit, Superior Province, Ontario, Canada, Chemical Geology, 79, 201-235
20Jack Hills, Nookawarra Station, Murchison Shire, Western Australia, AustraliaRasmussen, B., Fletcher, I.R., Muhling, J.R., and Wilde, S.A.W. (2010) In situ U-Th-Pb geochronology of monazite and xenotime from the Jack Hills belt: Implications for the age of deposition and metamorphism of Hadean zircons: Precambrian Research, v. 180, p. 26–46, doi:10.1016/j.precamres.2010.03.004
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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)
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Synonyms of MonaziteHide

Other Language Names for MonaziteHide

Dutch:Monaziet
French:Monazite
Italian:Monazite
Japanese:モナズ石
Norwegian (Bokmål):Urdit
Polish:Monacyt
Portuguese:Monazita
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

Common AssociatesHide

Associated Minerals Based on Photo Data:
Anatase16 photos of Monazite associated with Anatase on mindat.org.
Quartz15 photos of Monazite associated with Quartz on mindat.org.
Rutile10 photos of Monazite associated with Rutile on mindat.org.
Schorl10 photos of Monazite associated with Schorl on mindat.org.
Magnetite8 photos of Monazite associated with Magnetite on mindat.org.
Ilmenite6 photos of Monazite associated with Ilmenite on mindat.org.
Albite5 photos of Monazite associated with Albite on mindat.org.
Zircon4 photos of Monazite associated with Zircon on mindat.org.
Uraninite3 photos of Monazite associated with Uraninite on mindat.org.
Garnet3 photos of Monazite associated with Garnet on mindat.org.

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.

References for MonaziteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Breithaupt, J.F.A. (1829) Neue krystallographische Bestimmung und mineralogische Charakteristik verschiedener Mineralspecien, II. Ueber den Monazit, eine neue Specie des Mineral-Reichs. Journal für Chemie und Physik: 55: 301. [as Monazit]
Brooke (1831) Philosophical Magazine and Journal of Science: 10: 139. [as Mengite]
Palache, C., Berman, H., and Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 691-696.
Overstreet, W.C. (1967) The geologic occurrence of monazite. USGS Professional Paper 530: 114-118.
Demartin, F., Pilati, T., Diella, V., Donzelli, S., and Gramaccioli, C.M. (1991) Alpine monazite: further data. The Canadian Mineralogist: 29: 61-67.
Pan, Y., Fleet, M.E., and MacRae, N.D. (1993) Oriented monazite inclusions in apatite porphyroblasts from the Hemo gold deposit, Ontario, Canada. Mineralogical Magazine: 57: 697-707.
Ni, Y., Hughes, J.M., and Mariano, A.N. (1995) Crystal chemistry of the monazite and xenotime structures. American Mineralogist: 80: 21-26.
Zhu, X.K. and O'Nions, R.K. (1999) Monazite chemical composition: some implications for monazite geochronology. Contributions to Mineralogy and Petrology: 137: 351-363.
Clavier, N., Podor, R., and Dacheux, N. (2011) Crystal chemistry of the monazite structure. Journal of the European Ceramic Society: 31: 941-976.
Janots, E., Gnos, E., Berger, A., and Whitehouse, M. (2014) High spatial resolution dating of hydrothermal monazite from Alpine clefts (Abstract). Geophysical Research Abstracts, Vol. 16, EGU2014-7145.

Internet Links for MonaziteHide

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