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Nioboaeschynite-(Y)

A valid IMA mineral species
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Photos of Nioboaeschynite-(Y) (2)
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Named as the niobium analogue of aeschynite-(Y).
Type Locality:
ⓘBear Lake diggings, Monmouth Township, Highlands East Township, Haliburton County, Ontario, Canada
The Nb analogue ofAeschynite-(Y).

Compare the chemically very similarEuxenite-(Y) which has different space-group symmetry. Compare alsoFergusonite-(Y).


Unique Identifiers
Approval year:
2006
Type description reference:
Bermanec, Vladimir, Tomašić, Nenad, Kniewald, Goran, Back, Malcolm E., Zagler, Georg (2008) Nioboaeschynite-(Y), a new member of the aeschynite group from the Bear Lake Diggings, Haliburton County, Ontario, Canada.The Canadian Mineralogist, 46 (2) 395-402doi:10.3749/canmin.46.2.395

Classification of Nioboaeschynite-(Y)
Dana 8th ed.:
8.3.6.7

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
3 : AB2O6

Mineral Symbols
Transparency:
Translucent
Colour:
Deep brownish red
Comment:
Otherwise it is dark, almost black.
Streak:
Grayish brown
Hardness:
5 - 6 onMohs scale
Hardness:
VHN100=922 kg/mm2 - Vickers
Hardness Data:
Measured
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
5.34 g/cm3 (Measured)    5.33 g/cm3 (Calculated)

Optical Data of Nioboaeschynite-(Y)

Chemistry of Nioboaeschynite-(Y)
Common Impurities:
Fe,Ta

Crystallography of Nioboaeschynite-(Y)
General Appearance of Type Material:
Subhedral crystals up to 1 cm in size.
Place of Conservation of Type Material:
Croatian Natural History Museum, Zagreb, Croatia, no. 600:ZAG; 9613MP1.
Geological Setting of Type Material:
Calcite vein-dike.
Associated Minerals at Type Locality:
Amphibole SupergroupApatiteBiotiteCalciteFeldspar Group
Monazite GroupPyriteQuartzThorite
Reference:
Bermanec, V., Tomašić, N., Kniewald, G., Back, M.E., Zagler, G. (2008): Nioboaeschynite-(Y), a new member of the aeschynite group from the Bear Lake diggings, Haliburton County, Ontario, Canada. Canadian Mineralogist: 46: 395-402.
Download:
http://rruff.info/uploads/CM46_395.pdf

Synonyms of Nioboaeschynite-(Y)

Other Language Names for Nioboaeschynite-(Y)

Relationship of Nioboaeschynite-(Y) to other Species
Other Members of this group:
Aeschynite-(Ce)(Ce,Ca,Fe,Th)(Ti,Nb)2(O,OH)6Orth.mmm(2/m2/m2/m) :Pmna
Aeschynite-(Nd)(Nd,Ln,Ca)(Ti,Nb)2(O,OH)6Orth.mmm(2/m2/m2/m)
Aeschynite-(Y)(Y,Ln,Ca,Th)(Ti,Nb)2(O,OH)6Orth.mmm(2/m2/m2/m) :Pmna
Nioboaeschynite-(Ce)(Ce,Ca)(Nb,Ti)2(O,OH)6Orth.mmm(2/m2/m2/m)
Nioboaeschynite-(Nd)(Nd,Ce,Ca,Th)(Nb,Ti,Fe,Ta)2(O,OH)6Orth.
RynersoniteCaTa2O6Orth.mmm(2/m2/m2/m)
Tantalaeschynite-(Y)Y(Ta,Ti,Nb)2O6Orth.mmm(2/m2/m2/m)
UM2001-09-O:CaNbREESiTiY(Ca,Y,REE)(Ti,Nb,Si)2(O,OH)6
Vigezzite(Ca,Ce)(Nb,Ta,Ti)2O6Orth.mmm(2/m2/m2/m) :Pnma

Related Minerals -Strunz-mindat GroupingOrth.mmm(2/m2/m2/m) :Pmna4.DF.05Aeschynite-(Nd)(Nd,Ln,Ca)(Ti,Nb)2(O,OH)6Orth.mmm(2/m2/m2/m)4.DF.05Aeschynite-(Y)(Y,Ln,Ca,Th)(Ti,Nb)2(O,OH)6Orth.mmm(2/m2/m2/m) :Pmna4.DF.05Tantalaeschynite-(Y)Y(Ta,Ti,Nb)2O6Orth.mmm(2/m2/m2/m)4.DF.05Vigezzite(Ca,Ce)(Nb,Ta,Ti)2O6Orth.mmm(2/m2/m2/m) :Pnma4.DF.05Nioboaeschynite-(Ce)(Ce,Ca)(Nb,Ti)2(O,OH)6Orth.mmm(2/m2/m2/m)4.DF.05Nioboaeschynite-(Nd)(Nd,Ce,Ca,Th)(Nb,Ti,Fe,Ta)2(O,OH)6Orth.4.DF.05RynersoniteCaTa2O6Orth.mmm(2/m2/m2/m)4.DF.10ChangbaiitePbNb2O6Trig. 3m :R3m4.DF.15Murataite-(Y)(Y,Na)6Zn(Zn,Fe3+)4(Ti,Nb,Na)12O29(O,F,OH)10F4Iso.m3m(4/m32/m) :Fm3m

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    • References for Nioboaeschynite-(Y)ⓘWentworth plutonic complexPe-Piper+1 other referenceBermanec et al. (2008)Färber (n.d.)Mitchell et al. (2017)
    Finland
     
    Al Ani Thair and Torppa Akseli 2011. ...
    Russia
     
    Kovalev et al. (2023)
    South Korea
     
    Pavel.M. Kartashov (n.d.)
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