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Loranskite-(Y)

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Formula:
(Y,Ce,Ca)ZrTaO6 (?)
Colour:
Black; greenish yellow ...
Hardness:
5
Name:
After A.M. Loranski, Inspector of the Mining Institute, St. Petersburg, Russia.
An ill-defined material.
(See http://www.mindat.org/mesg-7-88239.html.)

Classification of Loranskite-(Y)

Approved
4/D.19-100
4.DG.05

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
8.1.5.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
1 : ABO4
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http://www.mindat.org/min-2435.html
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First Recorded Occurrence of Loranskite-(Y)

Physical Properties of Loranskite-(Y)

Sub-Metallic
Colour:
Black; greenish yellow (transmitted light)
Streak:
Green-grey
Hardness (Mohs):
5
Tenacity:
Brittle
Fracture:
Conchoidal
Density:
4.6 g/cm3 (Measured)    

Chemical Properties of Loranskite-(Y)

Formula:
(Y,Ce,Ca)ZrTaO6 (?)
Essential elements:
All elements listed in formula:

Relationship of Loranskite-(Y) to other Species

4.DG.05Euxenite-(Y)(Y,Ca,Ce,U,Th)(Nb,Ti,Ta)2O6
4.DG.05Fersmite(Ca,Y)(Nb,Ta,Ti)2(O,OH)6
4.DG.05Kobeite-(Y)(Y,Zr)2(Ti,Fe3+)2(O,OH)7
4.DG.05Polycrase-(Y)(Y,U)(Ti,Nb)2O6
4.DG.05Tanteuxenite-(Y)(Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6
4.DG.05Uranopolycrase(U4+,Y)(Ti,Nb)2O6
4.DG.05Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
4.DG.10Fergusonite-(Y)-βYNbO4
4.DG.10Fergusonite-(Nd)-β(Nd,Ce)NbO4
4.DG.10Fergusonite-(Ce)-β(Ce,La,Nd)NbO4
4.DG.10Yttrotantalite-(Y)(Y,Ca,U4+,Fe2+)2(Ta,Nb)2O8
4.DG.10Beta-Fergusonite-(Nd)
4.DG.15Foordite(Sn,Pb)(Nb,Ta)2O6
4.DG.15Thoreaulite(Sn2+,Pb)(Ta,Nb)2O6
4.DG.20RaspitePb(WO4)

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 Loranskite-(Y)

Reference List:
Melnikov (1899), Zs. Kr.: 31: 505.

Borgström (1910), Geol. För. Förh.: 32, 3, 1531.

Comptes Rendus Hebdomadaires des Séances de l’ Académie des Sciences de Paris: 250: 3032-3034.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 767.

Anthony, J.W., Bideaux, R.A., Bladh, K.W. and Nichols, M.C. (1997) Handbook of Mineralogy, Volume III. Halides, Hydroxides, Oxides. Mineral Data Publishing, Tucson, AZ, 628pp.

Strunz-Nickel (2001): 219.

Internet Links for Loranskite-(Y)

Localities for Loranskite-(Y)

(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.
Russia
 
  • Northern Region
    • Karelia Republic
      • Ladoga Region
        • Pitkyaranta District (Pitkäranta District)
J.W. Anthony, R.A. Bideaux, K.W. Bladh, M.C. Nichols: Handbook of Mineralogy, Vol. III (1997)
Mineral and/or Locality  
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