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Samarskite-(Yb)

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Formula:
(Yb,Y,Fe
3+
 
,Fe
2+
 
,U,Th,Ca)
 
2
(Nb,Ta)
 
2
O
 
8
System:Monoclinic
Member of:Samarskite Group


Samarskite Group.
The Yb analogue of Samarskite-(Y).

Classification of Samarskite-(Yb)

IMA status:Approved 2004
Strunz 8th edition ID:4/D.19-65
Nickel-Strunz 10th (pending) edition ID: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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Type Occurrence of Samarskite-(Yb)

Type Locality:Little Patsy pegmatite (Patsy pegmatite), South Platte Pegmatite District, Jefferson Co., Colorado, USA

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:
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,Fe
3+
 
,Fe
2+
 
,U,Th,Ca)
 
2
(Nb,Ta)
 
2
O
 
8
Simplified for copy/paste:(Yb,Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Idealised Formula:
(Yb,Fe
3+
 
)
 
2
(Nb,Ta)
 
2
O
 
8
Essential elements:Nb, O, Yb
All elements listed in formula:Ca, Fe, Nb, O, Ta, Th, U, Y, Yb

Relationship of Samarskite-(Yb) to other Species

Member of:Samarskite Group
Other Members of Group:

- +
Calciosamarskite
(Ca,Fe
3+
 
,Y)
 
2
(Nb,Ta,Ti)
 
2
O
 
8
Ishikawaite
U
4+
 
Fe
2+
 
Nb
 
2
O
 
8
Samarskite-(Y)
(Y,Fe
3+
 
,Fe
2+
 
,U,Th,Ca)
 
2
(Nb,Ta)
 
2
O
 
8
Srilankite
ZrTi
 
2
O
 
6
Related Minerals - Nickel-Strunz Grouping):

- +
4.DB.05Argutite
GeO
 
2
4.DB.05Cassiterite
SnO
 
2
4.DB.05Plattnerite
PbO
 
2
4.DB.05Pyrolusite
MnO
 
2
4.DB.05Rutile
TiO
 
2
4.DB.05Tripuhyite
Fe
3+
 
Sb
5+
 
O
 
4
4.DB.05Tugarinovite
MoO
 
2
4.DB.05Varlamoffite
(Sn,Fe)(O,OH)
 
2
4.DB.10Byströmite
MgSb
 
2
O
 
6
4.DB.10Tapiolite-(Fe)
(Fe,Mn)(Ta,Nb)
 
2
O
 
6
4.DB.10Tapiolite-(Mn)
(Mn,Fe)(Ta,Nb)
 
2
O
 
6
4.DB.10Ordoñezite
ZnSb
 
2
O
 
6
4.DB.15bAkhtenskite
ε-Mn
4+
 
O
 
2
4.DB.15cNsutite
(Mn
4+
 
,Mn
2+
 
)(O,OH)
 
2
4.DB.15aParamontroseite
V
4+
 
O
 
2
4.DB.15aRamsdellite
Mn
4+
 
O
 
2
4.DB.20Scrutinyite
alpha-PbO
 
2
4.DB.25Ishikawaite
U
4+
 
Fe
2+
 
Nb
 
2
O
 
8
4.DB.25Ixiolite
(Ta,Nb,Sn,Fe,Mn)
 
4
O
 
8
4.DB.25Samarskite-(Y)
(Y,Fe
3+
 
,Fe
2+
 
,U,Th,Ca)
 
2
(Nb,Ta)
 
2
O
 
8
4.DB.25Srilankite
ZrTi
 
2
O
 
6
4.DB.25Yttrocolumbite-(Y)
Y(U
4+
 
,Fe
2+
 
)Nb
 
2
O
 
8
4.DB.25Calciosamarskite
(Ca,Fe
3+
 
,Y)
 
2
(Nb,Ta,Ti)
 
2
O
 
8
4.DB.30Ferberite
FeWO
 
4
4.DB.30Hübnerite
MnWO
 
4
4.DB.30Sanmartinite
(Zn,Fe)WO
 
4
4.DB.30Krasnoselskite
CoWO
 
4
4.DB.30Heftetjernite
ScTaO
 
4
4.DB.30Huanzalaite
MgWO
 
4
4.DB.35Columbite-(Fe)
FeNb
 
2
O
 
6
4.DB.35Tantalite-(Fe)
FeTa
 
2
O
 
6
4.DB.35Columbite-(Mn)
(Mn,Fe)(Nb,Ta)
 
2
O
 
6
4.DB.35Tantalite-(Mn)
MnTa
 
2
O
 
6
4.DB.35Columbite-(Mg)
(Mg,Fe,Mn)(Nb,Ta)
 
2
O
 
6
4.DB.35Qitianlingite
(Fe,Mn)
 
2
(Nb,Ta)
 
2
WO
 
10
4.DB.35Magnocolumbite
4.DB.35Tantalite-(Mg)
(Mg,Fe
2+
 
)(Ta,Nb)
 
2
O
 
6
4.DB.40Ferrowodginite
FeSnTa
 
2
O
 
8
4.DB.40Lithiotantite
Li(Ta,Nb)
 
3
O
 
8
4.DB.40Lithiowodginite
LiTa
 
3
O
 
8
4.DB.40Titanowodginite
MnTiTa
 
2
O
 
8
4.DB.40Wodginite
Mn(Sn,Ta)Ta
 
2
O
 
8
4.DB.40Ferrotitanowodginite
Fe
2+
 
TiTa
 
2
O
 
8
4.DB.40Wolframowodginite
Mn(Mn,Sn,Fe,Ta)(W,Ta,Nb)
 
2
O
 
8
4.DB.45Tivanite
V
3+
 
TiO
 
3
(OH)
4.DB.50Carmichaelite
(Ti,Cr,Fe)[O
 
2-x
(OH)
 
x
]
4.DB.55Alumotantite
AlTaO
 
4
4.DB.60Biehlite
((Sb,As)O)
 
2
[MoO
 
4
]

Other Names for Samarskite-(Yb)

Synonyms:
IMA2004-001
Other Languages:
Japanese:イテルビウムサマルスキー石

Other Information

Health Warning: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)

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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  • Localities for Samarskite-(Yb)

    The 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. ? 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
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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