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Monazite-(La)

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Big Photo

Kuivchorr Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© Pavel M. Kartashov

Show Monazite-(La) Photos (8)



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


Monazite Group.

Classification of Monazite-(La)

IMA status:Approved
Strunz 8th edition ID:7/A.15-10
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:38.4.3.2

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
Hey's CIM Ref.:19.9.4

19 : Phosphates
9 : Phosphates of rare earths and Sc
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Type Occurrence of Monazite-(La)

Type Locality:Kounrad Massif, Balkhash (Balqash), Balkhash (Balqash; Karatas; Prebalkhashie) Region, Karagandy Province (Qaragandy Oblysy; Karaganda Oblast'), Kazakhstan

Physical Properties of Monazite-(La)

Hardness (Mohs):5 - 5½

Optical Data of Monazite-(La)

Type:Biaxial (+)
RI values: nα = 1.770 - 1.800 nβ = 1.771 - 1.802 nγ = 1.830 - 1.850
2V:Measured: 12° , Calculated: 12° to 24°
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-(La)

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

Relationship of Monazite-(La) 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
Monazite-(Ce)
(Ce,La,Nd,Th)(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
Related Minerals - Nickel-Strunz Grouping):

- +
8.AD.05Nahpoite
Na
 
2
HPO
 
4
8.AD.10Monetite
Ca(HPO
 
4
)
8.AD.10Weilite
Ca(HAsO
 
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
NaCa(PO
 
4
)
8.AD.30Schultenite
Pb(HAsO
 
4
)
8.AD.35Chernovite-(Y)
Y(AsO
 
4
)
8.AD.35Dreyerite
Bi(VO
 
4
)
8.AD.35Wakefieldite-(Ce)
Ce(VO
 
4
)
8.AD.35Wakefieldite-(Y)
Y(VO
 
4
)
8.AD.35Xenotime-(Y)
Y(PO
 
4
)
8.AD.35Pretulite
Sc(PO
 
4
)
8.AD.35Xenotime-(Yb)
(Yb,Y,HREE)(PO
 
4
)
8.AD.35Wakefieldite-(La)
La(VO
 
4
)
8.AD.40Pucherite
Bi(VO
 
4
)
8.AD.45Ximengite
Bi(PO
 
4
)
8.AD.50Gasparite-(Ce)
(Ce,REE)(AsO
 
4
)
8.AD.50Monazite-(Ce)
(Ce,La,Nd,Th)(PO
 
4
)
8.AD.50Monazite-(Nd)
(Nd,La,Ce)(PO
 
4
)
8.AD.50Rooseveltite
Bi(AsO
 
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
+
2
)
 
0.5
Hg
2+
 
(AsO
 
4
)
8.AD.65Clinobisvanite
Bi(VO
 
4
)
Related Minerals - Hey's Index Grouping:

- +
19.9.1Xenotime-(Y)
Y(PO
 
4
)
19.9.2Churchite-(Y)
Y(PO
 
4
) · 2H
 
2
O
19.9.3Monazite-(Ce)
(Ce,La,Nd,Th)(PO
 
4
)
19.9.5Monazite-(Nd)
(Nd,La,Ce)(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
(PO
 
4
)
 
2
(OH)
 
6
19.9.11Florencite-(La)
LaAl
 
3
(PO
 
4
)
 
2
(OH)
 
6
19.9.12Florencite-(Nd)
(Nd,La,Ce)Al
 
3
(PO
 
4
)
 
2
(OH)
 
6
19.9.13Kolbeckite
ScPO
 
4
 · 2H
 
2
O

Other Names for Monazite-(La)

Other Languages:
Russian:Монацит-(La)
Simplified Chinese:独居石-(La)

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-(La)

Reference List:

- +
American Mineralogist (1966): 51: 152.

Internet Links for Monazite-(La)

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    • Localities for Monazite-(La)

    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.
    Hide Locality List
    (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
     
    • Western Australia
      • Laverton Shire
        • Mount Weld Station
    		Trans. Inst. Mining Metall.(Sect. B:Applied Earth Sci.) 104, 203-208(1995)
    Austria
     
    • Styria
      • Köflach
        • Voitsberg
          • Kleinwöllmiß
    		Bernhard, F. (2011)
    Bolivia
     
    • Potosí Department
      • Rafael Bustillo Province (Bustillos Province)
        • Llallagua
    		No reference listed
    Brazil
     
    • Bahia
    		F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]
    Canada
     
    • Ontario
      • Timiskaming District
        • Kirkland Lake area
          • Boston Township
    		Can. Min. 49, 749
    China
     
    • Guizhou Province
      • Zunyi Prefecture
        • Zunyi Co.
          • Zunyi Ni-Mo-PGE-Au ore field
    		Yiping Chen, Jiayong Pan, Kai Hu, Guolin Guo, Zhaobin Yan, and Xiujun Fan (2007): Acta Petrologica et Mineralogica 26(4), 340-344.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Liberec Region
    		Scharm, B.: Přehled minerálů nalezených v oblasti uranových koncentrací v severočeské křídě. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1995, roč. 3, s. 169-172.
    France
     
    • Brittany
      • Ille-et-Vilaine
        • Le Grand Fougeray
    		P. Devismes : "Atlas photographique des minéraux d'alluvions", BRGM, 1978.
    • Pays de Loire
      • Loire-Atlantique
        • Nozay
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Wolfach
          • Oberwolfach
            • Rankach valley
    		Kolitsch, U. & Götzinger, M. (2000): Einige Neufunde aus der Grube Clara im mittleren Schwarzwald: Eulytin, Namibit, Volborthit, Gearksutit, Spertiniit, Monazit-(La), Protasit, Sainfeldit, Cyanotrichit und Vauquelinit. Erzgräber 14, 33-47. (in German)
    Italy
     
    • Liguria
      • Savona Province
        • Maremola Valley
          • Magliolo
    		Bracco, R., Balestra, C., Castellaro, F., Mills, S.J., Ma, C., Callegari, A.M., Boiocchi, M., Bersani, D., Cadoni, M., Ciriotti, M.E. (2012): Nuovi minerali di terre rare da Costa Balzi Rossi, Magliolo (SV), Liguria. Micro. 2/2012. 66-77.
    Kazakhstan
     
    • Karagandy Province (Qaragandy Oblysy; Karaganda Oblast')
      • Balkhash (Balqash; Karatas; Prebalkhashie) Region
        • Balkhash (Balqash)
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    Madagascar
     
    • Fianarantsoa Province
      • Amoron'i Mania Region
        • Ambositra District
          • Manandriana Commune
    		Pavel M. Kartashov data
    Namibia
     
    • Khomas Region
      • Windhoek District
        • Aris
    		Pavel M. Kartashov analytical data (2011), specimens of Marco Sturla
    Russia
     
    • Eastern-Siberian Region
      • Prebaikalia (Pribaikal'e)
        • Irkutskaya Oblast'
          • Vitim Plateau
            • Biraya and Bya Rivers confluence area (Chara Basin)
              • Biraya Fe-REE ore occurrence
    		Pavel M. Kartashov analytical data
    • Northern Region
      • Komi Republic
        • Prepolar Ural
          • Kozhim River Basin
            • Maldynyrd (Maldy-nyrd) range
    		Pavel M. Kartashov data
    Pavel M. Kartashov analytical data
              • Grubependity Lake
    		Pavel M. Kartashov data
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Lovozero Massif
    		I.V. Pekov analytical data
            • Seidozero Lake
    South Africa
     
    • North West Province
      • Western Bushveld Complex
        • Rustenburg District
    		MITCHELL, R.H. & LIFEROVICH, R.P. (2004) Ecandrewsite - zincian pyrophanite from lujavrite. Pilansber alkaline complex, South Africa. Canadian Mineralogist), 42, 1169-1178.
    Tanzania
     
    • Kilimanjaro Region
      • Olmani Cinder Cone (Olmani Hill)
    		R.L. Rudnick et al. , Earth and Planetary Science Letters, 114, 1993, pp. 463-475.
    UK
     
    • England
      • Cornwall
        • Mount's Bay District
          • St Hilary
    		UKJMM 16
    USA
     
    • Nevada
      • Eureka Co.
        • Lynn District
    		NBMG Spec. Pub. 31 Minerals of Nevada
    • North Carolina
      • Yancey Co.
        • Spruce Pine District
          • Burnsville
            • Hurricane Mountain
    • 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.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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