Fergusonite-(Ce)
A valid IMA mineral species - questionable
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About Fergusonite-(Ce)
Robert Ferguson
Formula:
CeNbO4 · 0.3H2O
Colour:
Dark red to black
Hardness:
5½ - 6½
Specific Gravity:
5.48
Crystal System:
Tetragonal
Name:
For its relation to fergusonite-(Y), and its dominant cerium content. Named after Robert Ferguson (8 September 1769 – 3 December 1840, London, England) of Raith, Scottish landowner, politician and mineral collector.
Type Locality:
Dimorph of:
This page provides mineralogical data about Fergusonite-(Ce).
Unique Identifiers
Mindat ID:
1478
Long-form identifier:
mindat:1:1:1478:2
GUID
(UUID V4):
(UUID V4):
36c24456-19ca-4198-b35d-7de2cfafb496
IMA Classification of Fergusonite-(Ce)
Approved, Questionable
Approval history:
Jambor and Vanko (1989) state in an abstract of Kapustin (1986): "Apparently the tetragonal polymorph of monoclinic fergusonite-beta-(Ce). A more complete description and formal submission for approval of the name are needed".
Classification of Fergusonite-(Ce)
7.GA.05
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
G : Molybdates, Wolframates and Niobates
A : Without additional anions or H2O
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
G : Molybdates, Wolframates and Niobates
A : Without additional anions or H2O
8.1.1.3
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
1 : ABO4
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
1 : ABO4
18.2.3
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.
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 |
|---|---|---|
| Fgs-Ce | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Fgs | 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 Fergusonite-(Ce)
Optical Data of Fergusonite-(Ce)
Type:
Uniaxial (-)
RI values:
nω = 2.300 nε = 2.200
Max Birefringence:
δ = 0.100
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
Chemistry of Fergusonite-(Ce)
Mindat Formula:
CeNbO4 · 0.3H2O
Elements listed:
Crystallography of Fergusonite-(Ce)
Crystal System:
Tetragonal
Cell Parameters:
a = 5.17 Å, c = 5.30 Å
Ratio:
a:c = 1 : 1.025
Unit Cell V:
141.66 ų (Calculated from Unit Cell)
Comment:
Space group n.d.; on heated material
Crystal Structure
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2x2x2 | 3x3x3 | 4x4x4
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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) |
|---|---|---|---|---|---|---|---|
| 0010327 | Fergusonite-(Ce) | Skinner S J, Brooks I J E, Munnings C N (2004) Tetragonal CeNbO4 at 1073 K in air and in vacuo Acta Crystallographica C60 i37-i39 |  | 2004 | synthetic | 0 | 293 |
| 0010328 | Fergusonite-(Ce) | Skinner S J, Brooks I J E, Munnings C N (2004) Tetragonal CeNbO4 at 1073 K in air and in vacuo Acta Crystallographica C60 i37-i39 | | 2004 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.1 Å | (100) |
| 1.882 Å | (90) |
| 1.631 Å | (50) |
| 1.566 Å | (40) |
| 2.60 Å | (30) |
| 3.5 Å | (20) |
| 2.76 Å | (20) |
Comments:
Novopoltavskii massif, Russia.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 26 : Hadean detrital minerals | |
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites |
Type Occurrence of Fergusonite-(Ce)
General Appearance of Type Material:
Irregular poikiloblasts to 1 cm and rare prismatic dipyramidal crystals to 1 mm.
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Moscow, Russia, number 79595 (type).
Geological Setting of Type Material:
Carbonatite.
Associated Minerals at Type Locality:
Reference:
Yu. L. Kapustin (1986) Rare-earth mineralization in late carbonatites of the Novopoltavsk Massif. Novye Dannye Mineral., 33, 43-52 (in Russian).
Synonyms of Fergusonite-(Ce)
Fergusonite (in part)
Other Language Names for Fergusonite-(Ce)
Common Associates
Associated Minerals Based on Photo Data:
| 4 photos of Fergusonite-(Ce) associated with Phlogopite | KMg3(AlSi3O10)(OH)2 |
| 4 photos of Fergusonite-(Ce) associated with Vermiculite | Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O |
| 1 photo of Fergusonite-(Ce) associated with Fergusonite-(Y) | YNbO4 |
| 1 photo of Fergusonite-(Ce) associated with Polyakovite-(Ce) | (Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8 |
| 1 photo of Fergusonite-(Ce) associated with Sanidine | K(AlSi3O8) |
| 1 photo of Fergusonite-(Ce) associated with Zircon | Zr(SiO4) |
Related Minerals - Strunz-mindat Grouping
| 7.GA.05 | Fergusonite-(Nd) | NdNbO4 |
| 7.GA.05 | Fergusonite-(Y) | YNbO4 |
| 7.GA.05 | Powellite | Ca(MoO4) |
| 7.GA.05 | Scheelite | Ca(WO4) |
| 7.GA.05 | Stolzite | Pb(WO4) |
| 7.GA.05 | Wulfenite | Pb(MoO4) |
| 7.GA.05 | Suseinargiuite | NaBi(MoO4)2 |
| 7.GA.05 | Ronpetersonite | BaWO4 |
| 7.GA.10 | Formanite-(Y) | YTaO4 |
| 7.GA.10 | Iwashiroite-(Y) | Y(Ta,Nb)O4 |
| 7.GA.15 | Paraniite-(Y) | Ca2Y(AsO4)(WO4)2 |
| 7.GA.20 | Takanawaite-(Y) | YTaO4 |
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 Fergusonite-(Ce)
mindat.org URL:
https://www.mindat.org/min-1478.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Fergusonite-(Ce)
Reference List:
Localities for Fergusonite-(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.
Algeria | |
| Hadj-Kaddour et al. (1998) |
Canada | |
| G. Pouliot et al. (1964) |
| Frank Melanson (Hawthorneden) |
| gsc paper 70-50 |
| YAKOVLEVA et al. (2010b) |
China | |
| Su et al. (2) +3 other references |
| Qingchang Meng (1981) |
| Zhang Peishan et al. (1996) | |
Germany | |
| Blass +1 other reference |
| Blass +1 other reference | |
| Blass +1 other reference |
| Blass +1 other reference |
Italy | |
| Pavel M. Kartashov analytical data |
Japan | |
| Alfredo Petrov specimen (from David Nieto, 2-1998) |
Mongolia | |
| complex evolution of REE-Nb minerals. Acta Geologica Polonica (3) +1 other reference |
| Macdonald R. +1 other reference | |
Poland | |
| Ł. Kruszewski PXRD & pXRF data (paper in preparation) |
Russia | |
| Pavel.M. Kartashov (n.d.) |
| Koneva A.A. et al. (2010) |
| Konev et al. (2005) | |
| Doroshkevich et al. (2016) |
South Africa | |
| R. Liferovich - L. Horváth p.c. (2004) +1 other reference |
Spain | |
| Ковальчук et al. (2014) |
Ukraine (TL) | |
| Trudy Min.Muz. Fersmana (1976) |
USA | |
| Rocks and Minerals (1989) |
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Laacher See Volcanic Complex, Germany