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Samarskite-(Yb)

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Formula:
(Yb,Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
System:
Monoclinic
Samarskite Group.
The Yb analogue of Samarskite-(Y).

Classification of Samarskite-(Yb)

Approved 2004
4.DB.25

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
B : With medium-sized cations; chains of edge-sharing octahedra
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First Recorded Occurrence of Samarskite-(Yb)

Crystallography of Samarskite-(Yb)

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/b
Cell Parameters:
a = 5.687Å, b = 9.918Å, c = 5.2Å
β = 93.18°
Ratio:
a:b:c = 0.573 : 1 : 0.524
Unit Cell Volume:
V 292.85 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction Data:
d-spacingIntensity
3.664(21)
3.086(25)
2.981(100)
1.895(12)
1.865(20)
1.769(15)
1.746(12)
1.587(20)
Comments:
From type description.

Chemical Properties of Samarskite-(Yb)

Formula:
(Yb,Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Idealised Formula:
(Yb,Fe3+)2(Nb,Ta)2O8
Essential elements:
All elements listed in formula:

Relationship of Samarskite-(Yb) to other Species

Other Members of Group:
Calciosamarskite(Ca,Fe3+,Y)2(Nb,Ta,Ti)2O8
IshikawaiteU4+Fe2+Nb2O8
Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
SrilankiteZrTi2O6
4.DB.05ArgutiteGeO2
4.DB.05CassiteriteSnO2
4.DB.05PlattneritePbO2
4.DB.05PyrolusiteMnO2
4.DB.05RutileTiO2
4.DB.05TripuhyiteFe3+Sb5+O4
4.DB.05TugarinoviteMoO2
4.DB.05Varlamoffite(Sn,Fe)(O,OH)2
4.DB.10ByströmiteMgSb2O6
4.DB.10Tapiolite-(Fe)(Fe,Mn)(Ta,Nb)2O6
4.DB.10Tapiolite-(Mn)(Mn,Fe)(Ta,Nb)2O6
4.DB.10OrdoñeziteZnSb2O6
4.DB.15bAkhtenskiteε-Mn4+O2
4.DB.15cNsutite(Mn4+,Mn2+)(O,OH)2
4.DB.15aParamontroseiteV4+O2
4.DB.15aRamsdelliteMn4+O2
4.DB.20Scrutinyitealpha-PbO2
4.DB.25IshikawaiteU4+Fe2+Nb2O8
4.DB.25Ixiolite(Ta,Nb,Sn,Fe,Mn)4O8
4.DB.25Samarskite-(Y)(Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
4.DB.25SrilankiteZrTi2O6
4.DB.25Yttrocolumbite-(Y)Y(U4+,Fe2+)Nb2O8
4.DB.25Calciosamarskite(Ca,Fe3+,Y)2(Nb,Ta,Ti)2O8
4.DB.30FerberiteFeWO4
4.DB.30HübneriteMnWO4
4.DB.30Sanmartinite(Zn,Fe)WO4
4.DB.30KrasnoselskiteCoWO4
4.DB.30HeftetjerniteScTaO4
4.DB.30HuanzalaiteMgWO4
4.DB.35Columbite-(Fe)FeNb2O6
4.DB.35Tantalite-(Fe)FeTa2O6
4.DB.35Columbite-(Mn)(Mn,Fe)(Nb,Ta)2O6
4.DB.35Tantalite-(Mn)MnTa2O6
4.DB.35Columbite-(Mg)(Mg,Fe,Mn)(Nb,Ta)2O6
4.DB.35Qitianlingite(Fe,Mn)2(Nb,Ta)2WO10
4.DB.35Magnocolumbite
4.DB.35Tantalite-(Mg)(Mg,Fe2+)(Ta,Nb)2O6
4.DB.40FerrowodginiteFeSnTa2O8
4.DB.40LithiotantiteLi(Ta,Nb)3O8
4.DB.40LithiowodginiteLiTa3O8
4.DB.40TitanowodginiteMnTiTa2O8
4.DB.40WodginiteMn(Sn,Ta)Ta2O8
4.DB.40FerrotitanowodginiteFe2+TiTa2O8
4.DB.40WolframowodginiteMn(Mn,Sn,Fe,Ta)(W,Ta,Nb)2O8
4.DB.45TivaniteV3+TiO3(OH)
4.DB.50Carmichaelite(Ti,Cr,Fe)[O2-x(OH)x]
4.DB.55AlumotantiteAlTaO4
4.DB.60Biehlite((Sb,As)O)2[MoO4]

Other Names for Samarskite-(Yb)

Name in Other Languages:

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.

References for Samarskite-(Yb)

Reference List:
HANSON, Sarah L., SIMMONS, William B., and FALSTER, Alexander U., (2004) SAMARSKITE-(YB): A NEW MINERAL INDICATING EXTREME HREE ENRICHMENT IN THE SOUTH PLATTE NYF PEGMATITE DISTRICT, COLORADO GSA 2004 Denver Annual Meeting (November 7–10, 2004)

Internet Links for Samarskite-(Yb)

Localities for Samarskite-(Yb)

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
USA
 
  • Colorado
    • Jefferson Co.
      • South Platte Pegmatite District
Minerals of Colorado (1997) E.B. Eckels; Simmons W B, Hanson S H, Falster A U (2006) Samarskite-(Yb): a new species of the samarskite group from the Little Patsy pegmatite, Jefferson County, Colorado, The Canadian Mineralogist 44, 1119-1125
Mineral and/or Locality  
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