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Monazite

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Member of:Monazite Group
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. Currently in public beta-test.

Classification of Monazite

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Crystallography 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)

About Crystal Atlas

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The mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. You need Java to see these. You can download Java for free - click here to download Java

The 3d models and java code are kindly provided by www.smorf.nl. You can control the movement of the models by holding down the left mouse-button over the 3d model and moving your mouse. Keyboard controls are:

: default positions
t/T: decrease/increase transparency x/X: next/previous texture
b/B: next/previous background w: toggle wireframe
s: toggle sticks m: toggle miller indices
k: toggle crystallographic axes =/-: zoom in/out
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Relationship of Monazite to other Species

Member of:Monazite Group
Other Members of Group:

- +
Cheralite
(Ca,Ce)(Th,Ce)(PO
 
4
)
 
2
Gasparite-(Ce)
(Ce,REE)(AsO
 
4
)
Monazite-(Ce)
(Ce,La,Nd,Th)(PO
 
4
)
Monazite-(La)
(La,Ce,Nd)(PO
 
4
)
Monazite-(Nd)
(Nd,La,Ce)(PO
 
4
)
Monazite-(Sm)
(Sm,Gd,Ce,Th)(PO
 
4
)
Rooseveltite
Bi(AsO
 
4
)
Turnerite
Unnamed (Gd-dominant monazite)
((Gd,Y,Dy,Sm,Nd),Th,Ca)PO
 
4

Other Names for Monazite

Synonyms:
Urdite
Other Languages:
Dutch:Monaziet
French:Monazite
German:Monazit
Hebrew:מונזיט
Italian:Monazite
Japanese:モナズ石
Korean:모나자이트
Norwegian (Bokmål):Urdit
Polish:Monacyt
Portuguese:Monazita
Russian:Монацит
Simplified Chinese:独居石
Spanish:Monazita
Swedish:Monazit
Tajik (Cyrillic Script):Монтсит
Telugu:మోనజైట్
Traditional Chinese:獨居石
Turkish:Monazit
Ukrainian:Монацит

Other Information

Health Warning: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 (1829) Journal für Chemie und Physik, Nuremberg: 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. (1991a) Alpine monazite: further data. Can. Mineral., 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.

Mindat.org articles about Monazite

Article entries:
Monazite with feldspar inclusionsAlan Melbourne

Internet Links for Monazite

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  • Localities for Monazite

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