Clinofergusonite-(Ce)
A valid IMA mineral species
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Robert Ferguson
Formula:
CeNbO4
Colour:
red, reddish brown
Lustre:
Vitreous, Greasy
Hardness:
5½ - 6½
Specific Gravity:
5.34
Crystal System:
Monoclinic
Name:
Originally published as brocenite without prior name approval. The name was changed to fergusonite-(Ce)-β (also appears as beta-fergusonite-(Ce) and fergusonite-β-(Ce)), in allusion to its dimorphous relation to fergusonite-(Ce). It was renamed to clinofergusonite-(Ce) in 2022 by the IMA, where 'clino' indicates that the species is monoclinic. The root name honors 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 Clinofergusonite-(Ce).
Unique Identifiers
Mindat ID:
1481
Long-form identifier:
mindat:1:1:1481:2
GUID
(UUID V4):
(UUID V4):
e78d3278-bfdc-4806-9eea-c47451e4352e
Classification of Clinofergusonite-(Ce)
Approved
IMA status notes:
Renamed by the IMA
First published:
1973
4.DG.10
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
G : With large (+- medium-sized) cations; chains of edge-sharing octahedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
G : With large (+- medium-sized) cations; chains of edge-sharing octahedra
8.1.2.2
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
1 : ABO4
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
1 : ABO4
18.2.4
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-β | 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 |
Pronunciation of Clinofergusonite-(Ce)
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon & Katya Ralph | United Kingdom |
Physical Properties of Clinofergusonite-(Ce)
Vitreous, Greasy
Colour:
red, reddish brown
Hardness:
5½ - 6½ on Mohs scale
Density:
5.34 g/cm3 (Measured)
Chemical Properties of Clinofergusonite-(Ce)
Formula:
CeNbO4
Elements listed:
Crystallography of Clinofergusonite-(Ce)
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 5.19 Å, b = 11.34 Å, c = 5.48 Å
β = 84.95°
β = 84.95°
Ratio:
a:b:c = 0.458 : 1 : 0.483
Unit Cell V:
321.27 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.21 Å | (10) |
| 3.07 Å | (10) |
| 1.96 Å | (8) |
| 1.71 Å | (6) |
| 1.67 Å | (6) |
| 1.61 Å | (6) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites |
Type Occurrence of Clinofergusonite-(Ce)
Place of Conservation of Type Material:
Institute of Geochemistry Chinese Academy of Sciences, Guizhou, China.
Fersman Mineralogical Museum, Moscow, Russia, 66215.
Fersman Mineralogical Museum, Moscow, Russia, 66215.
Associated Minerals at Type Locality:
Synonyms of Clinofergusonite-(Ce)
Related Minerals - Strunz-mindat Grouping
| 4.DG.05 | Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 | Orth. mmm (2/m 2/m 2/m) : Pbcn |
| 4.DG.05 | Fersmite | (Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6 | Orth. mmm (2/m 2/m 2/m) : Pbcn |
| 4.DG.05 | Kobeite-(Y) | (Y,U)(Ti,Nb)2(O,OH)6 (?) | Iso. |
| 4.DG.05 | Loranskite-(Y) | (Y,Ce,Ca)ZrTaO6 (?) | |
| 4.DG.05 | Tanteuxenite-(Y) | Y(Ta,Nb,Ti)2(O,OH)6 | Orth. mmm (2/m 2/m 2/m) : Pbcn |
| 4.DG.05 | Uranopolycrase | (U4+,Y)(Ti,Nb)2O6 | Orth. mmm (2/m 2/m 2/m) : Pbcn |
| 4.DG.05 | Yttrocrasite-(Y) | (Y,Th,Ca,U)(Ti,Fe)2(O,OH)6 | Amor. |
| 4.DG.10 | Clinofergusonite-(Y) | YNbO4 | Mon. 2/m |
| 4.DG.10 | Clinofergusonite-(Nd) | (Nd,Ce)NbO4 | Mon. |
| 4.DG.10 | Yttrotantalite-(Y) | (Y,U,Fe2+)(Ta,Nb)(O,OH)4 | Orth. |
| 4.DG.15 | Foordite | Sn2+(Nb,Ta)2O6 | Mon. 2/m : B2/b |
| 4.DG.15 | Thoreaulite | (Sn2+,Pb)(Ta,Nb)2O6 | Mon. 2/m : B2/b |
| 4.DG.20 | Raspite | Pb(WO4) | Mon. 2/m : P21/b |
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 Clinofergusonite-(Ce)
mindat.org URL:
https://www.mindat.org/min-1481.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 Clinofergusonite-(Ce)
Reference List:
Localities for Clinofergusonite-(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.
China (TL) | |
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Russia | |
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USA | |
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