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Aeschynite-(Ce)

Big Photo

Kaiserer quarry, Hüttwinkl valley, Rauris valley, Hohe Tauern Mts, Salzburg, Austria
© 2004 ROM

Show Aeschynite-(Ce) Photos (3)
Formula:
(Ce,Ca,Fe,Th)(Ti,Nb)
 
2
(O,OH)
 
6
System:OrthorhombicColour:Black, brown, light ...
Lustre:Resinous, Waxy, Sub-MetallicHardness:5 - 6
Name:From the Greek for shame, in allusion to the fact that early chemists had difficulty with separations of titanium from zirconium in some samples
This page provides mineralogical data about Aeschynite-(Ce).

Classification of Aeschynite-(Ce)

IMA status:Approved
Strunz 8th edition ID:4/D.21-20
Nickel-Strunz 10th (pending) edition ID:4.DF.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
F : With large (+- medium-sized) cations; dimers and trimers of edgesharing octahedra
Dana 8th edition ID:8.3.6.1

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6
Hey's CIM Ref.:18.2.13

18 : Niobates and Tantalates
2 : Niobates and tantalates containing rare earths but not U
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Type Occurrence of Aeschynite-(Ce)

Type Locality:Gadolinite Pit (Pits Nos. 75 & 76), Dolgiye Mosty reserve-guard station, Ilmen Natural Reserve, Ilmen Mts, Chelyabinsk Oblast', Urals Region, Russia

Occurrences of Aeschynite-(Ce)

Geological Setting:in nepheline syenite and alkali syenite massifs,
in granite pegmatites,
in carbonatites in alkalic rocks,
as a detrital mineral in placers

Physical Properties of Aeschynite-(Ce)

Lustre:Resinous, Waxy, Sub-Metallic
Diaphaneity (Transparency):Translucent
Colour:Black, brown, light brown to yellow; reddish brown to light brown in transmitted light
Streak:Nearly black to brown
Hardness (Mohs):5 - 6
Tenacity:Brittle
Cleavage:Imperfect/Fair
on {100}, interrupted
Parting:parallel to {010} when nonmetamict
Fracture:Conchoidal
Density (measured):5.19 g/cm3
Density (calculated):5.617 g/cm3

Crystallography of Aeschynite-(Ce)

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Pmna (P2/m 2/n 21/a)
Cell Parameters:a = 7.538Å, b = 10.958Å, c = 5.396Å
Ratio:a:b:c = 0.688 : 1 : 0.492
Unit Cell Volume:V 445.72 ų (Calculated from Unit Cell)
Z:4
Morphology:Crystals are prismatic, parallel to [001], also tabular on {010} and striated on {010} parallel to [100]
X-Ray Powder Diffraction:
d-spacingIntensity
2.037 (25)
2.698 (30)
2.975 (100)
3.024 (80)
3.106 (35)
4.431 (25)
5.48 (25)
Comments:Recorded on synthetic CeTiNbO6

Chemical Properties of Aeschynite-(Ce)

Formula:
(Ce,Ca,Fe,Th)(Ti,Nb)
 
2
(O,OH)
 
6
Essential elements:Ce, O, Ti
All elements listed in formula:Ca, Ce, Fe, H, Nb, O, Th, Ti
Analyical Data:Results of the analysis of a sample from Hidra island, Norway
Nb2O5 (23.85)
Ta2O5 (6.97)
TiO2 (22.60)
ThO2 (15.42)
(Y,Er)2O3 (4.53)
Ce2O3 (19.50)
FeO (4.28)
CaO (2.52)

sum 99.67 wt.-%
Common Impurities:REE,Sn

Relationship of Aeschynite-(Ce) to other Species

Series:Forms a series with Nioboaeschynite-(Ce) (see here)
Forms a series with Aeschynite-(Y) (see here)
Related Minerals - Nickel-Strunz Grouping):
4.DF.05Aeschynite-(Nd)
(Nd,Ce,Ca)(Ti,Nb)
 
2
(O,OH)
 
6
4.DF.05Aeschynite-(Y)
(Y,Ca,Fe,Th)(Ti,Nb)
 
2
(O,OH)
 
6
4.DF.05Nioboaeschynite-(Ce)
(Ce,Ca,Th)(Nb,Ti)
 
2
(O,OH)
 
6
4.DF.05Niobo-aeschynite-(Nd)
(Nd,Ce)(Nb,Ti)
 
2
(O,OH)
 
6
4.DF.05Nioboaeschynite-(Y)
(Y,Ce,Nd)(Nb,Ta,Ti,Fe)
 
2
(O,OH)
 
6
4.DF.05Rynersonite
Ca(Ta,Nb)
 
2
O
 
6
4.DF.05Tantalaeschynite-(Y)
(Y,Ce,Ca)(Ta,Ti,Nb)
 
2
O
 
6
4.DF.05Vigezzite
(Ca,Ce)(Nb,Ti)
 
2
O
 
6
4.DF.10Changbaiite
PbNb
 
2
O
 
6
4.DF.15Murataite-(Y)
(Na,Y)
 
4
(Zn,Fe)
 
3
(Ti,Nb)
 
6
O
 
18
(F,OH)
 
4
Related Minerals - Hey's Index Grouping:
18.2.1Fergusonite-(Y)
YNbO
 
4
18.2.2β-Fergusonite-(Y)
YNbO
 
4
18.2.3Fergusonite-(Ce)
(Ce,La,Nd)NbO
 
4
18.2.4β-Fergusonite-(Ce)
(Ce,La,Nd)NbO
 
4
18.2.5Fergusonite-(Nd)
(Nd,Ce)(Nb,Ti)O
 
4
18.2.6β-Fergusonite-(Nd)
(Nd,Ce)NbO
 
4
18.2.7Formanite-(Y)
YTaO
 
4
18.2.8Pyrochlore
(Ca,Na)
 
2
Nb
 
2
O
 
6
(OH,F)
18.2.9Ceriopyrochlore-(Ce)
(Ce,Ca,Y)
 
2
(Nb,Ta)
 
2
O
 
6
(OH,F)
18.2.10Strontiopyrochlore
(Sr,Ce,Ca)
 
0.66
(Nb,Fe)
 
2
(O,OH)
 
7
18.2.11Loparite-(Ce)
(Na,Ce,Ca,Sr,Th)(Ti,Nb,Fe)O
 
3
18.2.12Fersmite
(Ca,Ce,Na)(Nb,Ta,Ti)
 
2
(O,OH,F)
 
6
18.2.14Aeschynite-(Nd)
(Nd,Ce,Ca)(Ti,Nb)
 
2
(O,OH)
 
6
18.2.15Aeschynite-(Y)
(Y,Ca,Fe,Th)(Ti,Nb)
 
2
(O,OH)
 
6
18.2.16Nioboaeschynite-(Ce)
(Ce,Ca,Th)(Nb,Ti)
 
2
(O,OH)
 
6
18.2.17Niobo-aeschynite-(Nd)
(Nd,Ce)(Nb,Ti)
 
2
(O,OH)
 
6
18.2.18Tantalaeschynite-(Y)
(Y,Ce,Ca)(Ta,Ti,Nb)
 
2
O
 
6
18.2.19Vigezzite
(Ca,Ce)(Nb,Ti)
 
2
O
 
6
18.2.20Murataite-(Y)
(Na,Y)
 
4
(Zn,Fe)
 
3
(Ti,Nb)
 
6
O
 
18
(F,OH)
 
4

Other Names for Aeschynite-(Ce)

German names:
Aeschynit-(Ce)
Russian names:
Эшинит-(Ce)
Varieties:
AlumolyndochiteCalciolyndochite

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 Aeschynite-(Ce)

Reference List:Palache, C., Berman, H. and Frondel, C. (1944): Dana's system of mineralogy, 7th ed., Vol. 1, 793-797.

Vlasov, K.A., Ed. (1966): Mineralogy of rare elements, Vol. 2, 489-496 .

Alexandrov, V. B. (1962): The crystal structure of aeschynite, Doklady Acad. Nauk SSSR 142, 181-184.

Fleischer, M. (1966): Rare earths in the aeschynite-priorite series. The status of lyndochite. Mineralogical Magazine 35, 801-809.

Ewing, R.C. (1976): A numerical approach toward the classification of complex, orthorhombic, rare-earth, AB2O6-type Nb-Ta-Ti oxides. Canadian Mineralogist 14, 111-119.

Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 3.

Internet Links for Aeschynite-(Ce)

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    Localities for Aeschynite-(Ce)

    Hide Locality List
    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.
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    (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.
    Austria
     
    • Salzburg
      • Hohe Tauern Mts
        • Habach valley
          • Nasenkopf Mt.
    		J. W. Anthony et al.: Handbook of Mineralogy, Vol. III (1997)
        • Rauris valley
          • Hüttwinkl valley
    		R. O. Meyer collection
    J. W. Anthony et al.: Handbook of Mineralogy, Vol. III (1997)
    Canada
     
    • Ontario
      • Renfrew Co.
        • Lyndoch Township
          • Quadeville
    		ontariominerals.com
    China
     
    • Inner Mongolia Autonomous Region
      • Baotou League
        • Darhan Muminggan United Banner
          • Bayan Obo
    		USGS Bull. 2143, Table 1, Principal minerals of the Bayan Obo ore deposit .
    Czech Republic
     
    • Moravia (Mähren; Maehren)
      • Vysočina Region
        • Třebíč
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)]
    Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)]
    Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)]
    Germany
     
    • Rhineland-Palatinate
      • Eifel Mts
        • Laach lake volcanic complex
          • Kruft
    		Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors
          • Mendig
            • Niedermendig
    		Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors
    Blass, G., Emmerich, F., Graf, HW., Tschörtner, J., Minerale der Eifelvulkane, CD, published by authors, 2006
              • Wingertsberg Mt.
    		Blass, G., Emmerich, F., Graf, HW., Tschörtner, J., Minerale der Eifelvulkane, CD, published by authors, 2006
    • Saxony
      • Oberlausitz
        • Görlitz
    		J. W. Anthony et al.: Handbook of Mineralogy, Vol. III (1997)
        • Weißenberg
    		J. W. Anthony et al.: Handbook of Mineralogy, Vol. III (1997)
    • Thuringia
      • Wurzbach
        • Weitisberga
    		Wittern: "Mineralfundorte in Deutschland", 2001
    Italy
     
    • Trentino-Alto Adige
      • Trento Province
        • Giudicarie Valley
          • Breguzzo
            • San Pietro-Breguzzo Valley
              • Malga Trivena hut
    		Giere, R. & Williams, C.T. (1992)
    Kazakhstan
     
    • Qaraghandy Oblysy (Karaganda Oblast')
    		no reference
    Mongolia
     
    • Hovd Aimag (Khovd Aimag)
      • Altai Mts
    		P.M. Kartashov data
    Norway
     
    • Aust-Agder
      • Iveland
    		J. W. Anthony et al.: Handbook of Mineralogy, Vol. III (1997)
    • Finnmark
      • Hasvik
        • Sørøya
    • Vest-Agder
      • Flekkefjord
    		J. W. Anthony et al.: Handbook of Mineralogy, Vol. III (1997)
    Russia
     
    • Far-Eastern Region
      • Khabarovskiy Kray
        • Aldan province
    		Pavel M. Kartashov data
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
    		www.koeln.netsurf.de/~w.steffens/khib.htm
            • Kukisvumchorr Mt
    		Shlyukova Z.V. (1986) Mineralogy of contact formations of Khibina massif, - Moscow, Nauka, p. 96 (in Rus.)
    www.koeln.netsurf.de/~w.steffens/lovo.htm
    • Urals Region
      • Chelyabinsk Oblast'
        • Ilmen Mts
          • Ilmen Natural Reserve
    		P.M. Kartashov data
            • Dolgiye Mosty reserve-guard station
    Slovakia
     
    • Košice Region
      • Eastern Slovenské Rudohorie Mts
    		Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
    South Korea
     
    • Chungcheongbukdo (Chungchong-pukto)
      • Chungju (Chung Won Kum; Chung-ju)
        • Joongwon-gun
          • Mt. Eorae
    		P.M. Kartashov data
    Switzerland
     
    • Grischun (Grisons; Graubünden)
      • Vorderrhein Valley
        • Tujetsch (Tavetsch)
    		J. W. Anthony et al.: Handbook of Mineralogy, Vol. III (1997)
    • Ticino (Tessin)
      • Leventina
    		J. W. Anthony et al.: Handbook of Mineralogy, Vol. III (1997)
    USA
     
    • Colorado
      • Clear Creek Co.
        • Dailey District (Jones Pass District)
    		Minerals of Colorado (1997) Eckels, E. B.
    • Idaho
      • Elmore Co.
    		Ream, Lanny L. 2004. Idaho Minerals, 2nd edition, Revised and Updated
    • Montana
      • Ravalli Co.
        • Darby
    		J. W. Anthony et al.: Handbook of Mineralogy, Vol. III (1997)
    • North Carolina
      • Yancey Co.
        • Spruce Pine District
          • Black Mtn-Bowlens Creek Area
            • Burnsville
              • Hurricane Mt.
    		Gems and Minerals of America- Jay Ellis Ransom-1974
    Mineral and/or Locality
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