Monazite-(Nd)
A valid IMA mineral species
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About Monazite-(Nd)
Formula:
Nd(PO4)
Colour:
Bright rose-red
Hardness:
5 - 5½
Specific Gravity:
5.43 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
Named for its relationship to monazite-(Ce). The suffix/modifier follows the Levinson rule for minerals with essential REE, indicating a predominance of neodymium. The root name is from the Greek μουάζειυ "to be solitary" in allusion to the rarity of its (monazite-(Ce)) presence in the first known localities.
Unique Identifiers
Mindat ID:
2753
Long-form identifier:
mindat:1:1:2753:9
GUID
(UUID V4):
(UUID V4):
9b5a7825-c9e4-4aa8-94c3-53946ff72ba1
IMA Classification of Monazite-(Nd)
Classification of Monazite-(Nd)
8.AD.50
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
D : With only large cations
38.4.3.5
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
19.9.5
19 : Phosphates
9 : Phosphates of rare earths and Sc
19 : Phosphates
9 : Phosphates of rare earths and Sc
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.
| Symbol | Source | Reference |
|---|---|---|
| Mnz-Nd | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Mnz | Kretz (1983) | Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279. |
| Mnz | Siivolam & Schmid (2007) | Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download |
| Mnz | Whitney & Evans (2010) | Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371 |
| Mnz | The Canadian Mineralogist (2019) | The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download |
Physical Properties of Monazite-(Nd)
Transparency:
Translucent
Colour:
Bright rose-red
Hardness:
5 - 5½ on Mohs scale
Density:
5.43 g/cm3 (Calculated)
Optical Data of Monazite-(Nd)
Type:
Biaxial (+)
RI values:
nα = 1.770 - 1.800 nβ = 1.771 - 1.802 nγ = 1.830 - 1.850
Max Birefringence:
δ = 0.060
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
extreme
Chemistry of Monazite-(Nd)
Mindat Formula:
Nd(PO4)
Elements listed:
Crystallography of Monazite-(Nd)
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 6.745(4) Å, b = 6.964(4) Å, c = 6.435(4) Å
β = 103.65(4)°
β = 103.65(4)°
Ratio:
a:b:c = 0.969 : 1 : 0.924
Unit Cell V:
293.73 ų (Calculated from Unit Cell)
Z:
4
Comment:
P21/n
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0001702 | Monazite-(Nd) | Ni Y, Hughes J M, Mariano A N (1995) Crystal chemistry of the monazite and xenotime structures Nd(PO4) American Mineralogist 80 21-26 |  | 1995 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.080 Å | (100) |
| 3.280 Å | (60) |
| 2.846 Å | (50) |
| 2.425 Å | (40) |
| 4.15 Å | (30) |
| 2.590 Å | (30) |
| 2.177 Å | (30) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3a: Earth’s earliest Hadean crust | >4.50 |
| 9 : Lava/xenolith minerals (hornfels, sanidinite facies) | |
| Stage 4a: Earth’s earliest continental crust | >4.4-3.0 |
| 19 : Granitic intrusive rocks | |
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
| 26 : Hadean detrital minerals | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites | |
| 36 : Carbonatites, kimberlites, and related igneous rocks | |
| Stage 5: Initiation of plate tectonics | <3.5-2.5 |
| 40 : Regional metamorphism (greenschist, amphibolite, granulite facies) |
Type Occurrence of Monazite-(Nd)
General Appearance of Type Material:
Long prismatic crystals, bright rose in colour.
Place of Conservation of Type Material:
Mineralogical Institute, University of Basel, Basel, Switzerland.
Natural History Museum, Basel, Switzerland, 30803.
Natural History Museum, Basel, Switzerland, 30803.
Geological Setting of Type Material:
In small fissures in gneiss blocks, or druses of aplitic to pegmatitic veins in a schistose gneiss with abundant white mica.
Associated Minerals at Type Locality:
Synonyms of Monazite-(Nd)
Other Language Names for Monazite-(Nd)
Relationship of Monazite-(Nd) to other Species
Member of:
Other Members of this group:
| Monazite-(Ce) | Ce(PO4) | Mon. 2/m |
| Monazite-(La) | La(PO4) | Mon. 2/m |
| Monazite-(Sm) | Sm(PO4) | Mon. 2/m |
Common Associates
Associated Minerals Based on Photo Data:
| 1 photo of Monazite-(Nd) associated with Monazite-(Ce) | Ce(PO4) |
| 1 photo of Monazite-(Nd) associated with Bariopharmacosiderite | Ba0.5Fe3+4(AsO4)3(OH)4 · 5H2O |
| 1 photo of Monazite-(Nd) associated with Baryte | BaSO4 |
| 1 photo of Monazite-(Nd) associated with Fluorapatite | Ca5(PO4)3F |
| 1 photo of Monazite-(Nd) associated with Muscovite | KAl2(AlSi3O10)(OH)2 |
Related Minerals - Strunz-mindat Grouping
| 8.AD. | Keplerite | Ca9(Ca0.5◻0.5)Mg(PO4)7 |
| 8.AD. | Deynekoite | Ca9◻Fe3+(PO4)7 |
| 8.AD. | Mazorite | Ba3(PO4)2 |
| 8.AD. | Monazite-(Gd) | Gd(PO4) |
| 8.AD.05 | Nahpoite | Na2(PO3OH) |
| 8.AD.10 | Monetite | Ca(PO3OH) |
| 8.AD.10 | Weilite | Ca(HAsO4) |
| 8.AD.10 | Švenekite | Ca(H2AsO4)2 |
| 8.AD.15 | Archerite | (K,NH4)(H2PO4) |
| 8.AD.15 | Biphosphammite | NH4(H2PO4) |
| 8.AD.20 | Phosphammite | (NH4)2(PO3OH) |
| 8.AD.25 | Buchwaldite | NaCa(PO4) |
| 8.AD.30 | Schultenite | Pb(HAsO4) |
| 8.AD.35 | Chernovite-(Y) | Y(AsO4) |
| 8.AD.35 | Dreyerite | Bi(VO4) |
| 8.AD.35 | Wakefieldite-(Ce) | Ce(VO4) |
| 8.AD.35 | Wakefieldite-(Y) | Y(VO4) |
| 8.AD.35 | Xenotime-(Y) | Y(PO4) |
| 8.AD.35 | Chernovite-(Ce) | (Ce,Y)(AsO4) |
| 8.AD.35 | Pretulite | Sc(PO4) |
| 8.AD.35 | Xenotime-(Yb) | Yb(PO4) |
| 8.AD.35 | Wakefieldite-(La) | La(VO4) |
| 8.AD.35 | Wakefieldite-(Nd) | Nd(VO4) |
| 8.AD.35 | Xenotime-(Gd) | Gd(PO4) |
| 8.AD.40 | Pucherite | Bi(VO4) |
| 8.AD.45 | Ximengite | Bi(PO4) |
| 8.AD.50 | Gasparite-(Ce) | Ce(AsO4) |
| 8.AD.50 | Monazite-(Ce) | Ce(PO4) |
| 8.AD.50 | Monazite-(La) | La(PO4) |
| 8.AD.50 | Rooseveltite | Bi(AsO4) |
| 8.AD.50 | Cheralite | CaTh(PO4)2 |
| 8.AD.50 | Monazite-(Sm) | Sm(PO4) |
| 8.AD.50 | UM2005-35-VO:CaFePSiTh | (Th,Ca)(VO4,SiO4,PO4) |
| 8.AD.50 | Gasparite-(La) | La(AsO4) |
| 8.AD.55 | Tetrarooseveltite | Bi(AsO4) |
| 8.AD.60 | Chursinite | [Hg2]2+Hg2+2[AsO4]2 |
| 8.AD.65 | Clinobisvanite | Bi(VO4) |
| 8.AD.70 | Gurimite | Ba3(VO4)2 |
| 8.AD.75 | Picaite | NaCa[AsO3OH][AsO2(OH)2] |
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.
Internet Links for Monazite-(Nd)
mindat.org URL:
https://www.mindat.org/min-2753.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Monazite-(Nd)
Localities for Monazite-(Nd)
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Argentina | |
| Colombo et al. (2011) |
| M. del Blanco (1996) |
| M. del Blanco et al. (1996) | |
Australia | |
| Bottrill et al. (2008) |
Austria | |
| Taucher F. & Hollerer Ch. (2015) |
| Kolitsch et al. (2023) |
Canada | |
| Mitchell et al. (2017) +1 other reference |
China | |
| Guimei Yu and Liangchao Zhao (1988) |
Czech Republic | |
| Scharm et al. (2000) |
DR Congo | |
| Tony Nikischer | |
Finland | |
| Al-Ani Thair |
Greece | |
| Bull. Acad. Serbe Sci. Art |
Italy (TL) | |
| Graeser et al. (1987) |
Japan | |
| 皆川鉄雄 et al. (2001) |
| Minakawa (1986) |
Northwest Africa Meteorites | |
| Liu et al. (2016) +1 other reference | |
Norway | |
| Rune S. Selbekk (2010) |
| Rune S. Selbekk (2010) |
Poland | |
| Twardak et al. (2023) |
| Matyszczak (2018) |
| Matyszczak (2018) | |
| Matyszczak (2018) |
| Matyszczak (2018) |
| Matyszczak (2018) | |
Romania | |
| Hirtopanu et al. (2000) |
| Hirtopanu et al. (2013) |
Russia | |
| Kovalev et al. (2024) |
| Pavel.M. Kartashov (n.d.) +1 other reference |
| geo.web.ru (2018) |
| Repina (2008) | |
| Kompanchenko et al. (2019) |
| Kovalev et al. (2023) |
Slovakia | |
| Ozdín (2015) |
| Pršek et al. (2010) |
| Ondrejka et al. (2023) |
| Števko et al. (2014) |
South Africa | |
| Atanasova et al. (2016) |
Switzerland | |
| Krzemnicki (1992) |
USA | |
| Färber (n.d.) |
| |
| Hanson et al. (1999) |
| Thomas Buchholz | |
| Hanson et al. (1999) |
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Siglo Veinte Mine, Llallagua, Rafael Bustillo Province, Potosí, Bolivia