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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 for gemological information about Monazite.

Classification of Monazite

Crystallographic forms of Monazite

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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Edge Lines | Miller Indicies | Axes

Opaque | Translucent | Transparent

Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation

Other Names for Monazite

Name in Other Languages:
Norwegian (Bokmål):Urdit
Simplified Chinese:独居石
Tajik (Cyrillic Script):Монтсит
Traditional Chinese:獨居石

Other Information

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 Monazite

Reference List:
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., 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., Gramaccioli, C.M. (1991) Alpine monazite: further data. The Canadian Mineralogist: 29: 61-67.

Pan, Y., Fleet, M.E., 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., Mariano, A.N. (1995) Crystal chemistry of the monazite and xenotime structures. American Mineralogist: 80: 21-26.

Zhu, X.K., 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., Dacheux, N. (2011) Crystal chemistry of the monazite structure. Journal of the European Ceramic Society: 31: 941-976.

Janots, E., Gnos, E., Berger, A. & Whitehouse, M. (2014) High spatial resolution dating of hydrothermal monazite from Alpine clefts (Abstract). Geophysical Research Abstracts, Vol. 16, EGU2014-7145.

Internet Links for Monazite URL:
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The following Monazite specimens are currently listed for sale on

Localities for Monazite

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