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Monazite-(Nd)

Big Photo

Siglo Veinte Mine (Siglo XX Mine; Llallagua Mine; Catavi), Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia
© Saul Krotki 2007

Show Monazite-(Nd) Photos (7)
Formula:
(Nd,La,Ce)PO
 
4
Hardness:5 - 5½
Name:From the Greek μουάζειυ "to be solitary" in allusion to the rarity of its presence in the first known localities, plus "Nd" as the Nd-dominant member of the Monazite series.


Monazite Group

Classification of Monazite-(Nd)

IMA status:Approved 1986
Strunz 8th edition ID:7/A.15-30
Nickel-Strunz 10th (pending) edition ID:8.AD.50

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
Dana 8th edition ID:38.4.3.5

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
Hey's CIM Ref.:19.9.5

19 : Phosphates
9 : Phosphates of rare earths and Sc
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Physical Properties of Monazite-(Nd)

Hardness (Mohs):5 - 5½

Optical Data of Monazite-(Nd)

Type:Biaxial (+)
RI values: nα = 1.770 - 1.800 nβ = 1.771 - 1.802 nγ = 1.830 - 1.850
Maximum Birefringence:δ = 0.060

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:extreme

Chemical Properties of Monazite-(Nd)

Formula:
(Nd,La,Ce)PO
 
4
Essential elements:Nd, O, P
All elements listed in formula:Ce, La, Nd, O, P

Relationship of Monazite-(Nd) to other Species

Member of Group:
Monazite Group:
Related Minerals - Nickel-Strunz Grouping):

- +
8.AD.05Nahpoite
Na
 
2
HPO
 
4
8.AD.10Monetite
CaHPO
 
4
8.AD.10Weilite
CaHAsO
 
4
8.AD.10Švenekite
Ca(H
 
2
AsO
 
4
)
 
2
8.AD.15Archerite
(K,NH
 
4
)[H
 
2
PO
 
4
]
8.AD.15Biphosphammite
(NH
 
4
,K)H
 
2
PO
 
4
8.AD.20Phosphammite
(NH
 
4
)
 
2
HPO
 
4
8.AD.25Buchwaldite
NaCaPO
 
4
8.AD.30Schultenite
PbHAsO
 
4
8.AD.35Chernovite-(Y)
YAsO
 
4
8.AD.35Dreyerite
BiVO
 
4
8.AD.35Wakefieldite-(Ce)
CeVO
 
4
8.AD.35Wakefieldite-(Y)
YVO
 
4
8.AD.35Xenotime-(Y)
YPO
 
4
8.AD.35Pretulite
ScPO
 
4
8.AD.35Xenotime-(Yb)
(Yb,Y,HREE)PO
 
4
8.AD.35Wakefieldite-(La)
LaVO
 
4
8.AD.40Pucherite
BiVO
 
4
8.AD.45Ximengite
BiPO
 
4
8.AD.50Gasparite-(Ce)
(Ce,REE)AsO
 
4
8.AD.50Monazite-(Ce)
(Ce,La,Nd,Th)PO
 
4
8.AD.50Monazite-(La)
(La,Ce,Nd)PO
 
4
8.AD.50Rooseveltite
BiAsO
 
4
8.AD.50Cheralite
(Ca,Ce)(Th,Ce)[PO
 
4
]
 
2
8.AD.50Monazite-(Sm)
(Sm,Gd,Ce,Th)(PO
 
4
)
8.AD.50UM2005-35-VO:CaFePSiTh
(Th,Ca)[VO
 
4
,SiO
 
4
,PO
 
4
]
8.AD.55Tetrarooseveltite
Bi(AsO
 
4
)
8.AD.60Chursinite
(Hg-Hg)
 
0.5
Hg
2+
 
[AsO
 
4
]
8.AD.65Clinobisvanite
BiVO
 
4
Related Minerals - Hey's Index Grouping:

- +
19.9.1Xenotime-(Y)
YPO
 
4
19.9.2Churchite-(Y)
YPO
 
4
·2H
 
2
O
19.9.3Monazite-(Ce)
(Ce,La,Nd,Th)PO
 
4
19.9.4Monazite-(La)
(La,Ce,Nd)PO
 
4
19.9.6Rhabdophane-(Ce)
(Ce,La)PO
 
4
·H
 
2
O
19.9.7Rhabdophane-(La)
(La,Ce)PO
 
4
·H
 
2
O
19.9.8Rhabdophane-(Nd)
(Nd,Ce,La)PO
 
4
·H
 
2
O
19.9.9Vitusite-(Ce)
Na
 
3
(Ce,La,Nd)(PO
 
4
)
 
2
19.9.10Florencite-(Ce)
CeAl
 
3
[(OH)
 
6
|(PO
 
4
)
 
2
]
19.9.11Florencite-(La)
LaAl
 
3
[(OH)
 
6
|(PO
 
4
)
 
2
]
19.9.12Florencite-(Nd)
NdAl
 
3
[(OH)
 
6
|(PO
 
4
)
 
2
]
19.9.13Kolbeckite
ScPO
 
4
·2H
 
2
O

Other Names for Monazite-(Nd)

Synonyms:
IMA1986-052
Other Languages:
Russian:Монацит-(Nd)

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-(Nd)

Reference List:American Mineralogist (1983): 68: 849.

Graeser, St. & Schwander, H. (1987): Gasparite-(Ce) and monazite-(Nd): two new minerals to the monazite group from the Alps. Schweiz. Mineral. Petrogr. Mitt., 67, 101-113.

American Mineralogist (1988): 73: 1495.

Schweizerische mineralogische und petrographische Mitteilungen (1987): 67: 103-113.

Internet Links for Monazite-(Nd)

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    Localities for Monazite-(Nd)

    Hide Locality List
    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Australia
     
    • Tasmania
      • Interview River district
    		Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
    China
     
    Zhang Peishan, Yang Zhuming, Tao Kejie, and Yang Xueming (1996): \"Mineralogy and Geology of Rare Earths in China\", Science Press (Beijing), 226 pp.
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Western Attikí District
        • Megara
    		Bull. Acad. Serbe Sci. Art,72, #20, 35-42
    Italy
     
    • Piedmont
      • Verbano-Cusio-Ossola Province
        • Formazza Valley
          • Vallone del Vannino
    		Graeser, St. & Schwander, H. (1987): Gasparite-(Ce) and monazite-(Nd): two new minerals to the monazite group from the Alps. Schweiz. Mineral. Petrogr. Mitt.: 67, 101-113.
    Russia
     
    • Eastern-Siberian Region
      • Prebaikalia (Pribaikal'e)
        • Irkutskaya Oblast'
          • Bodaibo
            • Lena Gold District
              • Kropotkinsky ore cluster
    		http://www.igem.ru/igem/chem/pt/sukhloge.htm; Pavel M. Kartashov data
    • Western-Siberian Region
      • Polar Urals
        • Omskaya Oblast'
    		Repina, S.A. (2008): Geology of Ore Deposits 50(7), 609-619.
    USA
     
    • North Carolina
      • Yancey Co.
        • Pisgah National Forest
          • Spruce Pine District
            • Black Mtn-Bowlens Creek Area
              • Burnsville
                • Hurricane Mt.
    • Wisconsin
      • Marathon Co.
    		Hanson, S.L., et al (1999) Rocks and Minerals, 74, 184
    Hanson, S.L., et al (1999) Rocks and Minerals, 74, 184
        • Wausau pluton
          • "Rotten granite" quarries
    		Thomas Buchholz, 1999 "Minerals of a Wausau Pegmatite, Marathon County, Wisconsin", Rocks and Minerals, vol .74 #4, p. 254 - 258.
    Mineral and/or Locality
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