Nioboaeschynite-(Ce)
A valid IMA mineral species
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About Nioboaeschynite-(Ce)
Formula:
(Ce,Ca)(Nb,Ti)2(O,OH)6
Colour:
black, dark red
Lustre:
Resinous
Hardness:
4½ - 5½
Specific Gravity:
4.97 - 5.13
Crystal System:
Orthorhombic
Member of:
Name:
For the relation to aeschynite-(Ce).
Type Locality:
Unique Identifiers
Mindat ID:
2908
Long-form identifier:
mindat:1:1:2908:3
GUID
(UUID V4):
(UUID V4):
5b58f432-e0a4-45a0-9535-b842a7f7f28c
IMA Classification of Nioboaeschynite-(Ce)
Approved
Classification of Nioboaeschynite-(Ce)
4.DF.05
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
F : With large (+- medium-sized) cations; dimers and trimers of edgesharing octahedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
F : With large (+- medium-sized) cations; dimers and trimers of edgesharing octahedra
8.3.6.2
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6
18.2.16
18 : Niobates and Tantalates
2 : Niobates and tantalates containing rare earths but not U
18 : Niobates and Tantalates
2 : Niobates and tantalates containing rare earths but not U
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Naes-Ce | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Nioboaeschynite-(Ce)
Resinous
Transparency:
Translucent, Opaque
Colour:
black, dark red
Streak:
brown
Hardness:
4½ - 5½ on Mohs scale
Hardness:
VHN100=593 - 683 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
4.97 - 5.13 g/cm3 (Measured) 5.16 g/cm3 (Calculated)
Optical Data of Nioboaeschynite-(Ce)
Type:
Biaxial
RI values:
nα = 2.270 - 2.280 nβ = 2.320 - 2.380 nγ = 2.360 - 2.500
2V:
Measured: 75° to 97°
Max Birefringence:
δ = 0.090 - 0.220
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
Pleochroism:
Weak
Comments:
X = red, reddish brown, yellowish brown; Y = reddish brown to brown; Z = reddish brown to dark brown.
Comments:
Isotropic when metamict.
n = 2.26 when metamict.
n = 2.26 when metamict.
Chemistry of Nioboaeschynite-(Ce)
Mindat Formula:
(Ce,Ca)(Nb,Ti)2(O,OH)6
Crystallography of Nioboaeschynite-(Ce)
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 7.68(18) Å, b = 11.03(6) Å, c = 5.35(3) Å
Ratio:
a:b:c = 0.696 : 1 : 0.485
Unit Cell V:
453.20 ų (Calculated from Unit Cell)
Z:
4
Morphology:
prismatic crystals, may be tabular, striated; as grains
Comment:
Space Group: Pmnb; commonly metamict.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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CIF File Best | x | y | z | a | b | c
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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) |
|---|---|---|---|---|---|---|---|
| 0019173 | Nioboaeschynite-(Ce) | Morrison S M, Downs R T, Domanik K J, Yang H, Doell D (2012) Nioboaeschynite-(Ce), Ce(NbTi)O6 Acta Crystallographica E68 i64-i65 |  | 2012 | Upper Fir carbonatite, Kamloops mining division, British Columbia, Canada | 0 | 293 |
| 0012439 | Nioboaeschynite-(Ce) | Aleksandrov V B (1962) The crystal structure of aeschynite Doklady Akademii Nauk SSSR 142 181-184 | 1962 | Vishnevye Mts, Chelyabinsk Oblast, Southern Urals, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.983 Å | (10) |
| 3.048 Å | (7) |
| 3.132 Å | (4) |
| 5.539 Å | (2) |
| 3.445 Å | (2) |
| 2.827 Å | (2) |
| 2.699 Å | (2) |
Comments:
commonly amorphous
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites | |
| 36 : Carbonatites, kimberlites, and related igneous rocks |
Type Occurrence of Nioboaeschynite-(Ce)
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, vis6310.
Associated Minerals at Type Locality:
Synonyms of Nioboaeschynite-(Ce)
Aeschynite (in part)
Nioboaeschynite (in part)
Other Language Names for Nioboaeschynite-(Ce)
Relationship of Nioboaeschynite-(Ce) to other Species
Member of:
Other Members of this group:
| Aeschynite-(Ce) | (Ce,Ca,Fe,Th)(Ti,Nb)2(O,OH)6 | Orth. mmm (2/m 2/m 2/m) : Pmna |
| Aeschynite-(Nd) | (Nd,Ln,Ca)(Ti,Nb)2(O,OH)6 | Orth. mmm (2/m 2/m 2/m) |
| Aeschynite-(Y) | (Y,Ln,Ca,Th)(Ti,Nb)2(O,OH)6 | Orth. mmm (2/m 2/m 2/m) : Pmna |
| Nioboaeschynite-(Nd) | (Nd,Ce,Ca,Th)(Nb,Ti,Fe,Ta)2(O,OH)6 | Orth. |
| Nioboaeschynite-(Y) | (Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6 | Orth. mmm (2/m 2/m 2/m) : Pban |
| Rynersonite | CaTa2O6 | Orth. mmm (2/m 2/m 2/m) |
| Tantalaeschynite-(Y) | Y(Ta,Ti,Nb)2O6 | Orth. mmm (2/m 2/m 2/m) |
| UM2001-09-O:CaNbREESiTiY | (Ca,Y,REE)(Ti,Nb,Si)2(O,OH)6 | |
| Vigezzite | (Ca,Ce)(Nb,Ta,Ti)2O6 | Orth. mmm (2/m 2/m 2/m) : Pnma |
Forms a series with:
Common Associates
Associated Minerals Based on Photo Data:
| 4 photos of Nioboaeschynite-(Ce) associated with Monazite-(Ce) | Ce(PO4) |
| 2 photos of Nioboaeschynite-(Ce) associated with Aegirine | NaFe3+Si2O6 |
| 2 photos of Nioboaeschynite-(Ce) associated with Calcite | CaCO3 |
| 2 photos of Nioboaeschynite-(Ce) associated with Phlogopite | KMg3(AlSi3O10)(OH)2 |
| 1 photo of Nioboaeschynite-(Ce) associated with Albite | Na(AlSi3O8) |
Related Minerals - Strunz-mindat Grouping
| 4.DF.05 | Aeschynite-(Ce) | (Ce,Ca,Fe,Th)(Ti,Nb)2(O,OH)6 |
| 4.DF.05 | Aeschynite-(Nd) | (Nd,Ln,Ca)(Ti,Nb)2(O,OH)6 |
| 4.DF.05 | Aeschynite-(Y) | (Y,Ln,Ca,Th)(Ti,Nb)2(O,OH)6 |
| 4.DF.05 | Nioboaeschynite-(Nd) | (Nd,Ce,Ca,Th)(Nb,Ti,Fe,Ta)2(O,OH)6 |
| 4.DF.05 | Nioboaeschynite-(Y) | (Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)2(O,OH)6 |
| 4.DF.05 | Rynersonite | CaTa2O6 |
| 4.DF.05 | Tantalaeschynite-(Y) | Y(Ta,Ti,Nb)2O6 |
| 4.DF.05 | Vigezzite | (Ca,Ce)(Nb,Ta,Ti)2O6 |
| 4.DF.10 | Changbaiite | PbNb2O6 |
| 4.DF.15 | Murataite-(Y) | (Y,Na)6Zn(Zn,Fe3+)4(Ti,Nb,Na)12O29(O,F,OH)10F4 |
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 Nioboaeschynite-(Ce)
mindat.org URL:
https://www.mindat.org/min-2908.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
References for Nioboaeschynite-(Ce)
Localities for Nioboaeschynite-(Ce)
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.
Canada | |
| Morrison et al. (2012) |
| Caudle +1 other reference | |
China | |
| Li (1982) +3 other references |
| Zhang Peishan et al. (1996) +1 other reference |
Czech Republic | |
| Pauliš P. et al. (Kutna Hora, issue 1) |
Finland | |
| Al Ani (2013) |
France | |
| MONCHOUX P. et al. (2006) |
| MONCHOUX P. et al. (2006) | |
Germany | |
| Blass +1 other reference |
| Blass | |
| Blass |
| Blass |
North Korea | |
Russia | |
| Pavel M. Kartashov analytical data (2011) |
| Fleischer's Glossary of Mineral Species ... +1 other reference |
| Nedosekova (2007) | |
| webmineral.ru (2016) | |
| Koneva A.A. et al. (2010) |
| Mills et al. (2012) | |
| Sorokhtina et al. (2018) |
South Korea | |
| Pavel.M. Kartashov (n.d.) |
USA | |
| Janules (2004) |
Quick NavTopAbout Nioboaeschynite-(Ce)Unique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Bayan Obo deposit, Bayan Obo, Bayan Obo mining district, Baotou City, Inner Mongolia, China