Clinofergusonite-(Nd) (original) (raw)
A valid IMA mineral species
Colour:
Red, brownish red, yellowish brown
Crystal System:
Monoclinic
Name:
Originally named fergusonite-β-(Nd) in allusion to its dimorphous relation to fergusonite-(Nd). Renamed to clinofergusonite-(Nd) 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.
This page provides mineralogical data about Clinofergusonite-(Nd).
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:1466:9
acb95a01-e9c0-448a-bea2-c188379d7bea
IMA Classification of Clinofergusonite-(Nd)Hide
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IMA status notes:
Renamed by the IMA
Classification of Clinofergusonite-(Nd)Hide
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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
8.1.2.3
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
1 : ABO4
18.2.6
18 : Niobates and Tantalates
2 : Niobates and tantalates containing rare earths but not U
Mineral SymbolsHide
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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.
| Symbol | Source | Reference |
|---|---|---|
| Fgs-Nd-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 |
Physical Properties of Clinofergusonite-(Nd)Hide
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Colour:
Red, brownish red, yellowish brown
Density:
6.45 g/cm3 (Measured)
Optical Data of Clinofergusonite-(Nd)Hide
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Birefringence:
Isotropic minerals have no birefringence
Chemistry of Clinofergusonite-(Nd)Hide
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Mindat Formula:
(Nd,Ce)NbO4
Crystallography of Clinofergusonite-(Nd)Hide
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Crystal System:
Monoclinic
Cell Parameters:
a = 5.07 Å, b = 5.62 Å, c = 5.41 Å
β = 93°
Ratio:
a:b:c = 0.902 : 1 : 0.963
Unit Cell V:
153.94 ų (Calculated from Unit Cell)
Comment:
Space Group I2 heat treated
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.21 Å | (8) |
| 3.04 Å | (10) |
| 2.82 Å | (8) |
| 2.73 Å | (3) |
| 2.57 Å | (4) |
| 1.899 Å | (3) |
| 1.799 Å | (3) |
| 1.603 Å | (4) |
Geological EnvironmentHide
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Type Occurrence of Clinofergusonite-(Nd)Hide
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General Appearance of Type Material:
Irregular grains and rarely prismatic and bipyramidal, (0.02-0.06 mm, max. 0.25 mm).
Place of Conservation of Type Material:
Geological Setting of Type Material:
In a niobium-rare earth deposit in a proterozoic riebeckitized dolomite.
Associated Minerals at Type Locality:
Synonyms of Clinofergusonite-(Nd)Hide
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Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 4.DG.05 | Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
|---|---|---|---|
| 4.DG.05 | Fersmite | (Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 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. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 4.DG.05 | Uranopolycrase | (U4+,Y)(Ti,Nb)2O6 | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 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-(Ce) | CeNbO4 | Mon. 2/m : _B_2/m |
| 4.DG.10 | Yttrotantalite-(Y) | (Y,U,Fe2+)(Ta,Nb)(O,OH)4 | Orth. |
| 4.DG.15 | Foordite | Sn2+Nb2O6 | Mon. 2/m : _B_2/b |
| 4.DG.15 | Thoreaulite | Sn2+Ta2O6 | Mon. 2/m : _B_2/b |
| 4.DG.20 | Raspite | Pb(WO4) | Mon. 2/m : _P_21/b |
Other InformationHide
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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-(Nd)Hide
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References for Clinofergusonite-(Nd)Hide
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Reference List:
Localities for Clinofergusonite-(Nd)Hide
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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
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- 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). 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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
| China (TL) | |
|---|---|
| Inner Mongolia Baotou City (Baotou Prefecture) Bayan Obo mining district Bayan Obo Bayan Obo deposit ⓘ West Mine (TL) | Sun Weijun et al. (1983) |