Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat Articles
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery


This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About Monazite-(La)Hide

5 - 5½
Member of:
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.

Classification of Monazite-(La)Hide


A : Phosphates, etc. without additional anions, without H2O
D : With only large cations

4 : AXO4

19 : Phosphates
9 : Phosphates of rare earths and Sc

Physical Properties of Monazite-(La)Hide

5 - 5½ on Mohs scale

Optical Data of Monazite-(La)Hide

Biaxial (+)
RI values:
nα = 1.770 - 1.800 nβ = 1.771 - 1.802 nγ = 1.830 - 1.850
Measured: 12° , Calculated: 12° to 24°
Max Birefringence:
δ = 0.060
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of Monazite-(La)Hide


Type Occurrence of Monazite-(La)Hide

Other Language Names for Monazite-(La)Hide

Simplified Chinese:镧独居石
Traditional Chinese:鑭獨居石

Relationship of Monazite-(La) to other SpeciesHide

Member of:
Other Members of this group:
CheraliteCaTh(PO4)2Mon. 2/m
Monazite-(Ce)Ce(PO4)Mon. 2/m : P21/b
Monazite-(Sm)Sm(PO4)Mon. 2/m : P21/m
RooseveltiteBi(AsO4)Mon. 2/m
Unnamed (Gd-dominant monazite)(Gd,Y,Dy,Sm,Nd,Th,Ca)(PO4)

Common AssociatesHide

Associated Minerals Based on Photo Data:
Bastnäsite-(Ce)2 photos of Monazite-(La) associated with Bastnäsite-(Ce) on mindat.org.
Cerianite-(Ce)2 photos of Monazite-(La) associated with Cerianite-(Ce) on mindat.org.
Arisite-(Ce)2 photos of Monazite-(La) associated with Arisite-(Ce) on mindat.org.
Aegirine2 photos of Monazite-(La) associated with Aegirine on mindat.org.
Thorite2 photos of Monazite-(La) associated with Thorite on mindat.org.
Natrolite2 photos of Monazite-(La) associated with Natrolite on mindat.org.
Arsenoflorencite-(La)1 photo of Monazite-(La) associated with Arsenoflorencite-(La) on mindat.org.
Chernovite-(Y)1 photo of Monazite-(La) associated with Chernovite-(Y) on mindat.org.
Tuperssuatsiaite1 photo of Monazite-(La) associated with Tuperssuatsiaite on mindat.org.
Sphalerite1 photo of Monazite-(La) associated with Sphalerite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.AD.05NahpoiteNa2HPO4Mon. 2/m : P21/m
8.AD.10MonetiteCa(HPO4)Tric. 1
8.AD.10WeiliteCa(HAsO4)Tric. 1 : P1
8.AD.10ŠvenekiteCa(H2AsO4)2Tric. 1 : P1
8.AD.15Archerite(K,NH4)(H2PO4)Tet. 4 2m : I4 2d
8.AD.15Biphosphammite(NH4,K)(H2PO4)Tet. 4 2 2 : I41 2 2
8.AD.20Phosphammite(NH4)2(HPO4)Mon. 2/m : P21/b
8.AD.25BuchwalditeNaCa(PO4)Orth. mm2 : Pmn21
8.AD.30SchultenitePb(HAsO4)Mon. 2/m : P2/b
8.AD.35Chernovite-(Y)Y(AsO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35DreyeriteBi(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35Wakefieldite-(Ce)Ce(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35Wakefieldite-(Y)Y(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35Xenotime-(Y)Y(PO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35Wakefieldite-(La)La(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.35Wakefieldite-(Nd)Nd(VO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
8.AD.40PucheriteBi(VO4)Orth. mmm (2/m 2/m 2/m)
8.AD.50Monazite-(Ce)Ce(PO4)Mon. 2/m : P21/b
8.AD.50RooseveltiteBi(AsO4)Mon. 2/m
8.AD.50CheraliteCaTh(PO4)2Mon. 2/m
8.AD.50Monazite-(Sm)Sm(PO4)Mon. 2/m : P21/m
8.AD.60Chursinite(Hg+2)0.5Hg2+(AsO4)Mon. 2/m : P21/b
8.AD.65ClinobisvaniteBi(VO4)Mon. 2/m

Related Minerals - Dana Grouping (8th Ed.)Hide 2/m : P21/b 2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.9.1Xenotime-(Y)Y(PO4)Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
19.9.2Churchite-(Y)Y(PO4) · 2H2OMon. 2/m : B2/b
19.9.3Monazite-(Ce)Ce(PO4)Mon. 2/m : P21/b
19.9.6Rhabdophane-(Ce)Ce(PO4) · H2OHex. 6 2 2 : P62 2 2
19.9.7Rhabdophane-(La)La(PO4) · H2OHex. 6 2 2 : P62 2 2
19.9.8Rhabdophane-(Nd)Nd(PO4) · H2OHex. 6 2 2 : P62 2 2
19.9.9Vitusite-(Ce)Na3(Ce,La,Nd)(PO4)2Orth. mm2 : Pca21
19.9.13KolbeckiteScPO4 · 2H2OMon. 2/m

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 Monazite-(La)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist (1966): 51: 152.

Internet Links for Monazite-(La)Hide

Localities for Monazite-(La)Hide

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 ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Jujuy
    • Rinconada Department
Ian Graham, Stephen Harris, Laure Martin, Angela Lay, William Powell, Elena Belousova, Eduardo Zappettini (2018) Unusual alluvial sapphires from Orosmayo, Argentina: a multi-analytical approach to decipher their
  • Western Australia
    • Laverton Shire
      • Mount Weld Station
Trans. Inst. Mining Metall.(Sect. B:Applied Earth Sci.) 104, 203-208(1995)
  • Styria
    • Köflach
      • Voitsberg
        • Kleinwöllmiß
Bernhard, F. (2011)
  • Vorarlberg
    • Montafon
      • Vandans
Kolitsch, U. (2014): 1855) Ankerit, Aragonit, Cobaltit, Dolomit, Elektrum, Florencit-(Ce), Gersdorffit, Jarosit, Magnesit, Malachit, Monazit-(Ce), Monazit-(La), Tellurobismuthit(?) und weitere Mineralien aus dem unteren Rellstal, Montafon, Vorarlberg. Pp. 91-92 in Niedermayr, G. et al. (2014): Neue Mineralfunde aus Österreich LXIII. Carinthia II, 204./124., 65-146.
  • Potosí
    • Rafael Bustillo
      • Llallagua
(See comments above.)
  • 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]
    • Novo Horizonte
      • Tapera
Menezes Filho, L.A.D., Chaves, M.L.S.C., Chukanov, N.V., Atencio, D., Scholz, R., Pekov, I.V., da Costa, G.M. Morrison, S.M., Andrade, M.B., Freitas, E.T.F., Downs, R.T., Belakovskiy, D.I. (2018): Parisite-(La), CaLa2(CO3)3F2, a new mineral from Novo Horizonte, Bahia, Brazil. Mineralogical Magazine, 82, 133-144.
  • Goiás
    • Cavalcante
      • Vaca Velha
Bilal, E. (2013). Geochimie Et Conditions De Cristallisation Des Mineraux Du Groupe Dd L’Helvite. Revista Geonomos, 2(2)p1-13
  • Ontario
    • Timiskaming District
      • Boston Township
Canadian Mineralogist 49, 749
  • Québec
    • Nord-du-Québec
Nadeau, O., Stevenson, R., & Jébrak, M. (2016) Evolution ofMontviel alkaline-carbonatite complex by coupled fractional crystallization, fluid mixing and metasomatism — Part II: Trace element and Sm–Nd isotope geochemistry ofmetasomatic rocks: implications for REE-Nb mineralization. Ore Geology Reviews, 72, 1163-1162.
  • Guizhou
    • Zunyi
      • 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
  • 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.
  • Plzeň Region
    • Rožmitál pod Třemšínem
      • Nové Mitrovice
Scharm, B. & Scharmová, M. (2000) Accessory minerals of siliceous rocks from the Kokšín hill near Mítov (Barrandian Neoproterozoic). Bulletin of Geosciences, 75(3), 307-318.
  • South Karelia
    • Luumäki
      • Kännätsalo
Lahti, Seppo & Kärkkäinen, Niilo 2016. Esiselvitys: REE-mineraalien esiintyminen Etelä-Suomen graniiteissa ja graniittipegmatiiteisssa. Geologinen Tutkimuskeskus raportti28/2016.
  • Brittany
    • Ille-et-Vilaine
      • Grand Fougeray
        • La Monnerie
P. Devismes : "Atlas photographique des minéraux d'alluvions", BRGM, 1978.
  • Pays de la Loire
    • Loire-Atlantique
  • Baden-Württemberg
    • Ortenaukreis
      • 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)
  • 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.
  • Mie
    • Ise City
      • Shobu
Daisuke Nishio- Hamane, Norimitsu Tomita, Tetsuo Minakawa, and Sachio Inaba (2013) Iseite, Mn2Mo3O8, a new mineral from Ise, Mie Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 108, 37─41.
Kazakhstan (TL)
  • Karaganda
    • Balkhash
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
  • Amoron'i Mania
    • Manandriana
      • Andakatany
Pavel M. Kartashov data
  • Khomas Region
    • Windhoek District
      • Aris
Pavel M. Kartashov analytical data (2011), specimens of Marco Sturla; Kolitsch, U., Blaß, G., Jahn, S., Cámara, F., von Bezing, L., Wartha, R. R., Tremmel, G., Sturla, M., Cerea, P., Skebo, M. and Ciriotti, M. E. (2016): Aris - mineralogy of the famous alkaline phonolite. AMI - Associazione Micromineralogica Italiana, Cremona, Italy, 95 pp.
  • Buryatia
    • Mama River Basin
      • Maigunda River
Pavel M. Kartashov analytical data (2013)
  • Irkutsk Oblast
    • Vitim Plateau
      • Biraya and Bya Rivers confluence area (Chara Basin)
        • Biraya Fe-REE ore occurrence
Pavel M. Kartashov analytical data
  • Komi Republic
    • Kozhim River Basin
      • Maldynyrd range (Maldy-nyrd range)
Pavel M. Kartashov data
Pavel M. Kartashov analytical data
        • Grubependity Lake
Pavel M. Kartashov data
  • Murmansk Oblast
    • Khibiny Massif
Pavel M. Kartashov analythical data
Yakovenchik, V.N., Ivaniuk, G.Yu., Pakhomovsky, Ya.A., Selivanova, E.A., Men'shikov, Yu.P., Korchak, J.A., Krivovichev, S.V., Spiridonova, D.V., Zalkind, O.A. (2010): Punkaruaivite, Li{Ti2(OH)2[Si4O11(OH)]}•H2O, a new mineral species from hydrothermalites of Khibiny and Lovozero alkaline massifs (Kola Peninsula, Russia). Canadian Mineralogist, 48, 41-50.
    • Lovozero Massif
      • Alluaiv Mt
        • Umbozero mine (Umbozerskii mine; Umba Mine)
Chukanov, N. V., Ermolaeva, V. N., Pekov, I. V., Sokolov, S. V., Nekrasov, A. N., & Sokolova, M. N. (2005). Raremetal mineralization connected with bituminous matters in late assemblages of pegmatites of the Khibiny and Lovozero massifs. New Data Minerals, 40, 80-95.
I.V. Pekov analytical data
      • Seidozero Lake
Pekov, I.V. (2000): Lovozero Massif. Moscow, Ocean Pictures Ltd, 480 pp.
Pekov, I.V. (2000): Lovozero Massif. Moscow, Ocean Pictures Ltd, 480 pp.
South Africa
  • North West
    • Bojanala Platinum District
MITCHELL, R.H. & LIFEROVICH, R.P. (2004) Ecandrewsite - zincian pyrophanite from lujavrite. Pilansber alkaline complex, South Africa. Canadian Mineralogist), 42, 1169-1178.
  • Kilimanjaro Region
    • Olmani Cinder Cone (Olmani Hill)
R.L. Rudnick et al. , Earth and Planetary Science Letters, 114, 1993, pp. 463-475.
  • England
    • Cornwall
      • St Hilary
Betterton, J. (1996) Monazite-(La) and Anatase from Penberthy Croft Mine, St. Hilary, Cornwall. UK Journal of Mines & Minerals, 16, 13.
  • California
    • Inyo Co.
      • Inyo Mts (Inyo Range)
        • Malpais Mesa
Paul M. Adams (2017) The Santa Rosa mine, Inyo County, California. Minerlogical Record 48:755-777
  • 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.
      • Wausau Intrusive Complex
Hanson, S.L., et al (1999) Rocks and Minerals, 74, 184
Thomas Buchholz, 1999 "Minerals of a Wausau Pegmatite, Marathon County, Wisconsin", Rocks and Minerals, vol .74 #4, p. 254 - 258.
Hanson, S.L., et al (1999) Rocks and Minerals, 74, 184
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: March 19, 2019 08:17:05 Page generated: March 15, 2019 11:10:41
Go to top of page