Samarskite Group
A group of related mineral species
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About Samarskite Group
Formula:
A3+B3+C5+2O8
A = Yb, Y, REE (Ln), U, Th, Ca
B = Fe3+, Mn2+
C = Nb, Ta, Ti. Nb> Ta and Ti
B = Fe3+, Mn2+
C = Nb, Ta, Ti. Nb> Ta and Ti
Member of:
Samarskite group minerals are ordered A3+C5+O4 minerals. The difference between the species of the group lies in the occupancy of the A-site.
Important note: Britvin et al. (2019) show, that iron is an essential constituent of samarskite-(Y) - a feature most likely concerning other group members, and thus interpolated from samarskite-(Y) to the general formula of the group.
Yttrotantalite-(Y) is (also) a member of the samarskite group according to Ercit (2005).
Important note: Britvin et al. (2019) show, that iron is an essential constituent of samarskite-(Y) - a feature most likely concerning other group members, and thus interpolated from samarskite-(Y) to the general formula of the group.
Yttrotantalite-(Y) is (also) a member of the samarskite group according to Ercit (2005).
Unique Identifiers
Mindat ID:
39540
Long-form identifier:
mindat:1:1:39540:9
GUID
(UUID V4):
(UUID V4):
833b5e30-eee3-4053-825d-682315c90ac9
Chemistry of Samarskite Group
Mindat Formula:
A3+B3+C5+2O8
A = Yb, Y, REE (Ln), U, Th, Ca
B = Fe3+, Mn2+
C = Nb, Ta, Ti. Nb> Ta and Ti
A = Yb, Y, REE (Ln), U, Th, Ca
B = Fe3+, Mn2+
C = Nb, Ta, Ti. Nb> Ta and Ti
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) |
|---|---|---|---|---|---|---|---|
| 0008983 | Srilankite | Troitzsch U, Christy A G, Ellis D J (2005) The crystal structure of disordered (Zr,Ti)O2 solid solution Physics and Chemistry of Minerals 32 504-514 | 2005 | 0 | 293 | ||
| 0008984 | Srilankite | Troitzsch U, Christy A G, Ellis D J (2005) The crystal structure of disordered (Zr,Ti)O2 solid solution Physics and Chemistry of Minerals 32 504-514 | 2005 | 0 | 293 | ||
| 0008985 | Srilankite | Troitzsch U, Christy A G, Ellis D J (2005) The crystal structure of disordered (Zr,Ti)O2 solid solution Physics and Chemistry of Minerals 32 504-514 | 2005 | 0 | 293 | ||
| 0008986 | Srilankite | Troitzsch U, Christy A G, Ellis D J (2005) The crystal structure of disordered (Zr,Ti)O2 solid solution Physics and Chemistry of Minerals 32 504-514 | 2005 | 0 | 293 | ||
| 0008987 | Srilankite | Troitzsch U, Christy A G, Ellis D J (2005) The crystal structure of disordered (Zr,Ti)O2 solid solution Physics and Chemistry of Minerals 32 504-514 | 2005 | 0 | 293 | ||
| 0008988 | Srilankite | Troitzsch U, Christy A G, Ellis D J (2005) The crystal structure of disordered (Zr,Ti)O2 solid solution Physics and Chemistry of Minerals 32 504-514 | 2005 | 0 | 293 | ||
| 0008989 | Srilankite | Troitzsch U, Christy A G, Ellis D J (2005) The crystal structure of disordered (Zr,Ti)O2 solid solution Physics and Chemistry of Minerals 32 504-514 | 2005 | 0 | 293 | ||
| 0010854 | Srilankite | Willgallis A, Hartl H (1983) (Zr0.33Ti0.67)O2 - ein naturliches zirkonium-titanoxid mit alpha-PbO2-struktur Zeitschrift fur Kristallographie 164 59-66 |  | 1983 | Rakwana, Sri Lanka | 0 | 293 |
| 0016662 | Srilankite | Bordet P, McHale A, Santoro A, Roth R (1986) Powder neutron diffraction study of ZrTiO4, Zr5Ti7O24, and FeNb2O6 _cod_database_code 1008790 Journal of Solid State Chemistry 64 30-46 | 1986 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
Other Language Names for Samarskite Group
Simplified Chinese:铌钇矿
Relationship of Samarskite Group to other Species
Member of:
Other Members of this group:
| Columbite Group | ||
| Ixiolite Group | ||
| Wodginite Group | ||
| Wolframite Group | Note: "Wolframite" usually has a chemical composition covering the range between Hübnerite and ... |
Group Members:
| Calciosamarskite | (Ca,U4+)Fe3+(Nb,Ta,Ti)2O8 | Orth. mmm (2/m 2/m 2/m) |
| Ishikawaite | U4+Fe2+Nb2O8 | Mon. |
| Samarskite-(Y) | YFe3+Nb2O8 | Mon. 2/m : P2/b |
| Samarskite-(Yb) | YbFe3+(Nb,Ta)2O8 | Mon. 2/m : P2/b |
| Shakhdaraite-(Y) | ScYNb2O8 | Mon. 2/m : P2/b |
| Srilankite | ZrTi2O6 | Orth. mmm (2/m 2/m 2/m) : Pbcn |
| Yttrotantalite-(Y) | (Y,U,Fe2+)(Ta,Nb)(O,OH)4 | Orth. |
Minerals chemically related to group:
| Ishikawaite | U4+Fe2+Nb2O8 |
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 Samarskite Group
mindat.org URL:
https://www.mindat.org/min-39540.html
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References for Samarskite Group
Reference List:
Hanson, S. L., Simmons, W. B., Falster, A. U., Foord, E. E., Lichte, F. E. (1999) Proposed nomenclature for samarskite-group minerals: new data on ishikawaite and calciosamarskite. Mineralogical Magazine, 63 (1) 27-36 doi:10.1180/002646199548286
Tomašić, Nenad, Gajović, Andreja, Bermanec, Vladimir, Linarić, Maša, Rajić Su, Dangsheng Š koda (2010) Preservation of the samarskite structure in a metamict ABO4 mineral: a key to crystal structure identification. European Journal of Mineralogy, 22 (3) 435-442 doi:10.1127/0935-1221/2010/0022-2032
Britvin, Sergey N., Pekov, Igor V., Krzhizhanovskaya, Maria G., Agakhanov, Atali A., Ternes, Bernd, Schüller, Willi, Chukanov, Nikita V. (2019) Redefinition and crystal chemistry of samarskite-(Y), YFe3+Nb2O8: cation-ordered niobate structurally related to layered double tungstates. Physics and Chemistry of Minerals, 46 (7) 727-741 doi:10.1007/s00269-019-01034-0
Localities for Samarskite Group
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.
Spinelli prospect, Glastonbury, Hartford County, Connecticut, USA