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Allanite-(Y)

A valid IMA mineral species - grandfathered
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00049420017866377727275.jpg
Allanite-(Y), etc.

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
00034410017272000315215.jpg
Allanite-(Y), etc.

Boden, Großrückerswalde, Erzgebirgskreis, Saxony, Germany
06253000017857756605130.jpg
Allanite-(Y), etc.

Kverndalen, Skogstad, Bamble, Telemark, Norway
07782760017271920742467.jpg
Allanite-(Y), etc.

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
06338010017271920838669.jpg
Allanite-(Y), etc.

Boden, Großrückerswalde, Erzgebirgskreis, Saxony, Germany
05753920017855039607145.jpg
Allanite-(Y), etc.

Kverndalen, Skogstad, Bamble, Telemark, Norway
07782760017271920742467.jpg
Allanite-(Y), etc.

Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
05135320017272000323275.jpg
Allanite-(Y), etc.

Boden, Großrückerswalde, Erzgebirgskreis, Saxony, Germany
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About Allanite-(Y)Hide

02843460017271920893448.jpg
Thomas Allan
Formula:
(CaY)(AlAlFe2+)O[Si2O7][SiO4](OH)
Often slightly radioactive due to minor U and/or Th contents; therefore often metamict.
Colour:
Black
Lustre:
Sub-Vitreous, Resinous, Waxy, Greasy
Hardness:
5½ - 6½
Specific Gravity:
3.5 - 4.2
Crystal System:
Monoclinic
Name:
Re-named, but not described, in 1966 by Alfred Abraham Levinson using what is now called the Levinson Rule whereby REE-dominant minerals are named by their root mineral name plus chemical suffixes. Allanite was named in 1810 by Thomas Thomson for Thomas Allan (1777, Edinburgh, Scotland - 1833, Morpeth, Northumberland, England), Scottish banker and mineralogist, who first observed "allanite". The -(Y) suffix was later added by Levinson (1966) to designate the Y-dominant member of the allanite group.
Allanite-(Y) is a member of the allanite group in the epidote supergroup and the Y analogue of the much more common allanite-(Ce). The key sites in the epidote supergroup minerals are: A1 = M2+, A2 = M3+, M1 = M3+, M2 = M3+, M3 = M2+, O4 = O2-, O10 = (OH)- (Armbruster et al., 2006). Some unnamed species are, however, thought to be dominantly oxidised, with M3 = M3+, balanced by O replacing OH.

Allanite-(Y) has the following dominant cations in these sites:
A1=Ca
A2=Y
M1=Al
M2=Al
M3=Fe2+

It is the only mineral in the epidote supergroup with Y dominance in the A2 site.

Fleischer (1985) has studied analyses of 506 allanites and presents the average content of each of the REE elements (including Y) in various rock types:

Average REE content in % of total REE content in allanites sorted by rock type
REE granite pegmatite granite granodiorite carbonatites alkaline rocks alkaline pegmatites
%La 22.225.329.332.433.334.9
%Ce 43.248.1 48.4 49.5 49.6 50.8
%Pr 5.75.04.34.1 4.33.8
%Nd 15.9 15.4 13.5 12.1 11.1 9.1
%Sm 4.12.41.80.9 0.70.6
%Eu0.20.1-0.1--
%Gd 3.81.32.00.30.20.3
%Tb0.40.10.1---
%Dy2.11.20.30.30.40.2
%Ho0.30.3---0.1
%Er 0.90.30.30.10.10.1
%Tm 0.1-----
%Yb0.9 0.40.10.20.20.1
%Lu 0.20.1----
%Y/(Y+Ln) 9.66.82.2-0.31.1
Number of samples analysed 11413929 111324


The Y content in allanites is generally much lower than Ce, La, and Nd. Y-dominant allanite is therefore normally confined to patches or zones within other allanite group minerals or as alteration products of other Y-bearing minerals. Allanite-(Y) is usually black and massive. It is resinous when fresh, but frequently dulled by hydrothermal alteration or weathering.


Unique IdentifiersHide

Mindat ID:
127
Long-form identifier:
mindat:1:1:127:2

Similar NamesHide

AlbaniteA synonym of 'Clinopyroxene leucitite'
AldaniteA variety of Thorianite(Th,Pb)O2 ?
Allagite
AllanitA synonym of 'Allanite'
AllaniteA synonym of Allanite Group
Allanite-(Ce)A valid IMA mineral species - grandfathered(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)
Allanite-(La)A valid IMA mineral species(CaLa)(AlAlFe2+)O[Si2O7][SiO4](OH)
Allanite-(Nd)A valid IMA mineral species(CaNd)(AlAlFe2+)O[Si2O7][SiO4](OH)
Allanite-(Sm)A valid IMA mineral species(CaSm)(AlAlFe2+)O[Si2O7][SiO4](OH)
Allanitt-(Y)A synonym
AlleniteA synonym of Pentahydrite
AlnöiteA synonym of 'Lamprophyric-pyroxene-calcite-biotite olivine-melilitite'
AluniteA valid IMA mineral species - grandfatheredKAl3(SO4)2(OH)6
AlvaniteA valid IMA mineral speciesZnAl4(V5+O3)2(OH)12 · 2H2O
OleniteA valid IMA mineral speciesNaAl3Al6(Si6O18)(BO3)3O3(OH)
OlleniteA rock subtype

IMA Classification of Allanite-(Y)Hide

IMA status:
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
CaYAl2Fe2+(Si2O7)(SiO4)O(OH)

Classification of Allanite-(Y)Hide

Strunz-mindat (2026):
9.BG.05b

9 : SILICATES (Germanates)
B : Sorosilicates
G : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination
Dana 8th ed.:
58.2.1a.3

58 : SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
2 : Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Hey's CIM Ref.:
16.13.4

16 : Silicates Containing Aluminum and other Metals
13 : Aluminosilicates of the rare earths

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
Aln-YIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of Allanite-(Y)Hide

Lustre:
Sub-Vitreous, Resinous, Waxy, Greasy
Transparency:
Opaque
Comment:
May be dull due to alteration
Colour:
Black
Streak:
Light gray
Hardness:
5½ - 6½ on Mohs scale
Comment:
May be softer due to alteration
Tenacity:
Very brittle
Cleavage:
Imperfect/Fair
{001} imperfect, {100} and {110} both poor
Fracture:
Conchoidal, Sub-Conchoidal
Density:
3.5 - 4.2 g/cm3 (Measured)    3.945 g/cm3 (Calculated)
Comment:
Variable due to alteration

Optical Data of Allanite-(Y)Hide

Type:
Biaxial (-)
RI values:
nα = 1.715 - 1.791 nβ = 1.718 - 1.815 nγ = 1.733 - 1.822
2V:
Measured: 40° to 80°, Calculated: 50° to 56°
Birefringence:
0.02
Max. Birefringence:
δ = 0.018 - 0.031
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure - the conoscopic view for a grain cut perpendicular to the acute bisectrix, using this mineral's 2V. The two small white dots mark the melatopes - the points where the two optic axes emerge - and are shown only when they fall within the field of view. The coloured bands are isochromatics, and the dark bands are isogyres.

Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
distinct to strong
Optical Extinction:
Y=b, OAP || (010)
Pleochroism:
Weak
Comments:
weak pale yellowish brown

Chemistry of Allanite-(Y)Hide

Mindat Formula:
(CaY)(AlAlFe2+)O[Si2O7][SiO4](OH)

Often slightly radioactive due to minor U and/or Th contents; therefore often metamict.
Element Weights:
Element% weight
O39.093 %
Y16.710 %
Si15.836 %
Fe10.496 %
Al10.143 %
Ca7.533 %
H0.189 %

Calculated from ideal end-member formula.
O
Y
Si
Fe
Al
Ca
H
Elements listed:
Al, Ca, Fe, H, O, Si, Y - search for minerals with similar chemistry

Crystallography of Allanite-(Y)Hide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Setting:
P21/m
Cell Parameters:
a = 8.8520(8) Å, b = 5.6959(5) Å, c = 10.0543(9) Å
β = 115.510(2)°
Ratio:
a:b:c = 1.554 : 1 : 1.765
Unit Cell V:
457.52 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Usually massive, rarely found in euhedral crystals. Tabular to prismatic crystals typical of allanite sub-group, rarely as rod-like crystals in sprays.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.638 Å(12)
3.495 Å(44)
2.885 Å(100)
2.848 Å(48)
2.672 Å(37)
2.596 Å(51)
2.396 Å(19)
2.155 Å(21)
2.123 Å(19)
2.113 Å(23)
Comments:
calculated

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 3a: Earth’s earliest Hadean crust>4.50
8 : Mafic igneous rocks
Stage 4a: Earth’s earliest continental crust>4.4-3.0
19 : Granitic intrusive rocks
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of Allanite-(Y)Hide

Type Locality:
ⓘ Åskagen Quarry, Persberg ore district, Filipstad, Värmland County, Sweden
General Appearance of Type Material:
euhedral crystals with size up to 1 mm
Place of Conservation of Type Material:
he collection of the Natural History Museum Oslo (catalogue no. NHM028251)

Since the sample B12614 allowed the first detailed characterisation of the allanite-(Y) species, it should be regarded as the co-type. The characterised sample RS007 was deposited in the collections of the Department of Mineralogy and Petrography, Moravian Museum, Zelný trh 6, 659 37 Brno, Czech Republic, catalogue number B12614.
Geological Setting of Type Material:
Granite pegmatite, rarely in exo-contact zone of granites or in skarn,rarely in tin veins. Accessory phase in the blocky zone of the NYF granitic pegmatite.
Associated Minerals at Type Locality:
Allanite-(Nd)BiotiteGadolinite-(Y)Iimoriite-(Y)Microcline
QuartzThalénite-(Y)

Synonyms of Allanite-(Y)Hide

Other Language Names for Allanite-(Y)Hide

Relationship of Allanite-(Y) to other SpeciesHide

Member of:
Allanite Group > Epidote Supergroup
Other Members of Allanite Group:
Akasakaite-(Ce)(CaCe)(AlAlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Akasakaite-(La)(CaLa)(AlAlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Allanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Allanite-(La)(CaLa)(AlAlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Allanite-(Nd)(CaNd)(AlAlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Allanite-(Sm)(CaSm)(AlAlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
'Androsite-(Ce)'(Mn2+Ce)(AlAlMn2+)O[Si2O7][SiO4](OH)
Dissakisite-(Ce)(CaCe)(AlAlMg)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Dissakisite-(La)(CaLa)(AlAlMg)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Ferriakasakaite-(Ce)(CaCe)(Fe3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Ferriakasakaite-(La)(CaLa)(Fe3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Ferriallanite-(Ce)(CaCe)(Fe3+AlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Ferriallanite-(La)(CaLa)(Fe3+AlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Ferriandrosite-(Ce)(Mn2+Ce)(Fe3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Ferriandrosite-(La)(Mn2+La)(Fe3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Manganiakasakaite-(La)(CaLa)(Mn3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Manganiandrosite-(Ce)(Mn2+Ce)(Mn3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Manganiandrosite-(La)(Mn2+La)(Mn3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
'Oxyallanite'{CaCe}{Al2Fe3+}(Si2O7)(SiO4)O(O) (?)
Uedaite-(Ce)(Mn2+Ce)(AlAlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
'UM1989-32-SiO:AlCaFeHREE'(Ca0.5◻0.5REE)(AlAlFe3+)O[Si2O7][SiO4](OH)
'UM1994-25-SiO:AlCaFeHREEV'(CaREE)(V3+AlFe2+)O[Si2O7][SiO4](OH)
'Unnamed (Mg-analogue of Ferriallanite-(Ce))'(CaCe)(Fe3+AlMg)O[Si2O7][SiO4](OH)
'Unnamed (Mn3+-analogue of Ferriakasakaite-(Ce))'(CaCe)(Mn3+AlMn2+)O[Si2O7][SiO4](OH)
Vanadoakasakaite-(Ce)(CaCe)(V3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Vanadoakasakaite-(La)(CaLa)(V3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Vanadoallanite-(La)(CaLa)(V3+AlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Vanadoandrosite-(Ce)(Mn2+Ce)(V3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
Vanadoandrosite-(La)Mn2+La(V3+AlMn2+)(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
Vielleaureite-(Ce)Mn2+Ce(MgAlMn2+)(Si2O7)(SiO4)F(OH)Mon. 2/m : P21/m

Common AssociatesHide

Associations Based on Photo Data:
9 photos of Allanite-(Y) associated with Thalénite-(Y)Y3Si3O10F
5 photos of Allanite-(Y) associated with QuartzSiO2
5 photos of Allanite-(Y) associated with Tengerite-(Y)Y2(CO3)3 · 2-3H2O
5 photos of Allanite-(Y) associated with Keiviite-(Y)Y2Si2O7
4 photos of Allanite-(Y) associated with Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2O
4 photos of Allanite-(Y) associated with CoffiniteU(SiO4) · nH2O
4 photos of Allanite-(Y) associated with UraniniteUO2
4 photos of Allanite-(Y) associated with Yttrocrasite-(Y)(Y,Th,Ca,U)(Ti,Fe)2(O,OH)6
3 photos of Allanite-(Y) associated with Iimoriite-(Y)Y2[SiO4][CO3]
3 photos of Allanite-(Y) associated with Kimuraite-(Y)Ca(Y,Nd)2(CO3)4 · 6H2O

Related Minerals - Strunz-mindat GroupingHide

9.BG.AlumovesuvianiteCa19AlAl4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9Tet. 4/m : P4/n
9.BG.Alnaperbøeite-(Ce)Ca(Ce2.5Na0.5)(AlAl2Al)[Si2O7][SiO4]3O(OH)2Mon. 2/m : P21/m
9.BG.Zilbermintsite-(La)(CaLa5)(Fe3+Al3Fe2+)[Si2O7][SiO4]5O(OH)3Mon. 2/m : P21/m
9.BG.Heflikite(CaCa)(AlAlSc)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.O5bVanadoandrosite-(La)Mn2+La(V3+AlMn2+)(Si2O7)(SiO4)O(OH)Mon. 2/m : P21/m
9.BG.MagnesiovesuvianiteCa19MgAl4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9Tet. 4/m : P4/n
9.BG.Zoisite-(Pb)(CaPb)(AlAlAl)O[Si2O7][SiO4](OH)Orth. mmm(2/m2/m2/m) : Pnma
9.BG.Shuiskite-(Cr)Ca2Cr3+Cr3+2[Si2O6OH][SiO4](OH)2OMon. 2/m : B2/m
9.BG.Radekškodaite Group
9.BG.05Dissakisite-(La)(CaLa)(AlAlMg)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05Manganiandrosite-(Ce)(Mn2+Ce)(Mn3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05bDissakisite-(Ce)(CaCe)(AlAlMg)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(Sm)(CaSm)(AlAlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05aHancockite(CaPb)(AlAlFe3+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05Dollaseite-(Ce)(CaCe)(MgAlMg)F[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05a v'Unnamed (Ga-analogue of Epidote)'(CaCa)(AlAlGa3+)O[Si2O7][SiO4](OH)
9.BG.05aClinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05aEpidote-(Sr)(CaSr)(AlAlFe3+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05Vanadoandrosite-(Ce)(Mn2+Ce)(V3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05bVanadoallanite-(La)(CaLa)(V3+AlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05b'Unnamed (Mg-analogue of Ferriallanite-(Ce))'(CaCe)(Fe3+AlMg)O[Si2O7][SiO4](OH)
9.BG.05bFerriallanite-(La)(CaLa)(Fe3+AlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05Uedaite-(Ce)(Mn2+Ce)(AlAlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05aEpidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05Tweddillite(CaSr)(Mn3+AlMn3+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05bÅskagenite-(Nd)(Mn2+Nd)(AlAlFe3+)O[Si2O7][SiO4]OMon. 2/m : P21/m
9.BG.05Piemontite-(Pb)(CaPb)(AlAlMn3+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(Ce)(CaCe)(AlAlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(La)(CaLa)(AlAlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05aPiemontite(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05bAkasakaite-(Ce)(CaCe)(AlAlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05bManganiandrosite-(La)(Mn2+La)(Mn3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05bAkasakaite-(La)(CaLa)(AlAlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05bVanadoakasakaite-(La)(CaLa)(V3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05Khristovite-(Ce)(CaCe)(MgAlMn2+)F[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05bFerriakasakaite-(La)(CaLa)(Fe3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05Ferriandrosite-(La)(Mn2+La)(Fe3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05'Androsite-(Ce)'(Mn2+Ce)(AlAlMn2+)O[Si2O7][SiO4](OH)
9.BG.05Vielleaureite-(Ce)Mn2+Ce(MgAlMn2+)(Si2O7)(SiO4)F(OH)Mon. 2/m : P21/m
9.BG.05Ferriandrosite-(Ce)(Mn2+Ce)(Fe3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05bFerriallanite-(Ce)(CaCe)(Fe3+AlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05b'Unnamed (Mn3+-analogue of Ferriakasakaite-(Ce))'(CaCe)(Mn3+AlMn2+)O[Si2O7][SiO4](OH)
9.BG.05bVanadoakasakaite-(Ce)(CaCe)(V3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05Piemontite-(Sr)(CaSr)(AlAlMn3+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05Niigataite(CaSr)(AlAlAl)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05bFerriakasakaite-(Ce)(CaCe)(Fe3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05bAllanite-(Nd)(CaNd)(AlAlFe2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.05b'UM1989-32-SiO:AlCaFeHREE'(Ca0.5◻0.5REE)(AlAlFe3+)O[Si2O7][SiO4](OH)
9.BG.05aMukhinite(CaCa)(AlAlV3+)O[Si2O7][SiO4](OH)Mon.
9.BG.05bManganiakasakaite-(La)(CaLa)(Mn3+AlMn2+)O[Si2O7][SiO4](OH)Mon. 2/m : P21/m
9.BG.10Zoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)Orth. mmm(2/m2/m2/m) : Pnma
9.BG.15MacfalliteCa2Mn3+3(SiO4)(Si2O7)(OH)3Mon. 2/m : P21/m
9.BG.15SursassiteMn2+2Al3(SiO4)(Si2O7)(OH)3Mon. 2/m : P21/m
9.BG.20Pumpellyite-(Al)Ca2AlAl2[Si2O6OH][SiO4](OH)2OMon. 2/m
9.BG.20Shuiskite-(Mg)Ca2MgCr3+2[Si2O6OH][SiO4](OH)2(OH)Mon. 2/m
9.BG.20Julgoldite-(Fe2+)Ca2Fe2+Fe3+2[Si2O6OH][SiO4](OH)2(OH)Mon. 2/m
9.BG.20OkhotskiteCa2Mn2+Mn3+2[Si2O6OH][SiO4](OH)2(OH)Mon. 2/m
9.BG.20Julgoldite-(Mg)Ca2MgFe3+2[Si2O6OH][SiO4](OH)2(OH)Mon.
9.BG.20PoppiiteCa2V3+V3+2[Si2O6OH][SiO4](OH)2OMon. 2/m : B2/m
9.BG.20Julgoldite-(Fe3+)Ca2Fe3+Fe3+2[Si2O6OH][SiO4](OH)2OMon.
9.BG.20Pumpellyite-(Fe2+)Ca2Fe2+Al2[Si2O6OH][SiO4](OH)2(OH)Mon. 2/m
9.BG.20Pumpellyite-(Fe3+)Ca2Fe3+Al2[Si2O6OH][SiO4](OH)2OMon. 2/m
9.BG.20Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)Mon. 2/m
9.BG.20Pumpellyite-(Mn2+)Ca2Mn2+Al2[Si2O6OH][SiO4](OH)2(OH)Mon. 2/m
9.BG.25GanomalitePb9Ca5Mn(Si2O7)4(SiO4)OHex. 6 : P6
9.BG.25WayneburnhamitePb9Ca6(Si2O7)3(SiO4)3Hex. 6 : P6
9.BG.30RustumiteCa10(Si2O7)2(SiO4)(OH)2Cl2Mon. 2/m : B2/b
9.BG.35ModraiteCa19Fe2+Al4(Al6Fe2+2)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9Tet. 4/mmm(4/m2/m2/m) : P4/nnc
9.BG.35FluorvesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(F,OH)9Tet. 4/mmm(4/m2/m2/m) : P4/nnc
9.BG.35VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9Tet. 4/mmm(4/m2/m2/m) : P4/nnc
9.BG.35Milanriederite(Ca18[REE])Fe3+Al4(Mg4Al4)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9Tet. 4/mmm(4/m2/m2/m) : P4/nnc
9.BG.35Manaevite-(Ce)(Ca13Ce4[H2O]2)Mg(Al3Mg)(Mg3Ti3Fe3+2)(◻4)◻[Si2O7]4[(SiO4)8(H4O4)2]O(OH)9Tet. 4/mmm(4/m2/m2/m) : P4/nnc
9.BG.35HongheiteCa19Fe2+Al4(Fe3+,Mg)8(◻4)B[Si2O7]4[(SiO4)10]O(OH,O)9Tet. 4/mmm(4/m2/m2/m) : P4/nnc
9.BG.35WiluiteCa19MgAl4(Al,Mg)8(B,◻)4◻[Si2O7]4[(SiO4)10]O(O,OH)9Tet. 4/mmm(4/m2/m2/m) : P4/nnc
9.BG.35CyprineCa19Cu2+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10](OH)(OH)9Tet. 4/m : P4/n
9.BG.35ManganvesuvianiteCa19Mn3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9Tet. 4/m : P4/n
9.BG.40Vyuntspakhkite-(Y)(Y,Yb)4Al2.5-1.5(Si,Al)1.5-2.5(SiO4)4O(OH)7Mon.
9.BG.45DellaiteCa6Si3O11(OH)2Tric.
9.BG.50Ferriperbøeite-(Ce)CaCe3(Fe3+Al2Fe2+)[Si2O7][SiO4]3O(OH)2Mon. 2/m : P21/m
9.BG.50Perbøeite-(La)CaLa3(AlAl2Fe2+)[Si2O7][SiO4]3O(OH)2 Mon. 2/m : P21/m
9.BG.50Perbøeite-(Ce)CaCe3(AlAl2Fe2+)[Si2O7][SiO4]3O(OH)2 Mon. 2/m : P21/m
9.BG.50Gatelite-(Ce)CaCe3(AlAl2Mg)[Si2O7][SiO4]3O(OH)2Mon. 2/m : P21/b
9.BG.50Ferriperbøeite-(La) CaLa3(Fe3+Al2Fe2+)[Si2O7][SiO4]3O(OH)2Mon. 2/m : P21/m
9.BG.55Västmanlandite-(Ce)CaCe3(MgAl2Mg)[Si2O7][SiO4]3F(OH)2Mon. 2/m : P21/m
9.BG.60Radekškodaite-(La) (CaLa5)(Al4Fe2+)[Si2O7][SiO4]5O(OH)3Mon. 2/m : P21/m
9.BG.60Radekškodaite-(Ce)(CaCe5)(Al4Fe2+)[Si2O7][SiO4]5O(OH)3Mon. 2/m : P21/m

Fluorescence of Allanite-(Y)Hide

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for Allanite-(Y)Hide

References for Allanite-(Y)Hide

Reference List:
Frondel, Judith W. (1964) Variation of some rare earths in allanite. American Mineralogist, 49 (9-10) 1159-1177
Dollase, W. A. (1971) Refinement of the crystal structures of epidote, allanite, and hancockite. American Mineralogist, 56 (3-4) 447-464
Fleischer, M. (1985) A summary of the variations in relative abundance of the lanthanides and yttrium in allanites and epidotes. Bulletin of the Geological Society of Finland, 57 (1). 151-155 doi:10.17741/bgsf/57.1-2.012
Ercit, T. S. (2002) The mess that is "allanite". The Canadian Mineralogist, 40 (5). 1411-1419 doi:10.2113/gscanmin.40.5.1411
Armbruster, Thomas, Bonazzi, Paola, Akasaka, Masahide, Bermanec, Vladimir, Chopin, Christian, Gieré, Reto, Heuss-Assbichler, Soraya, Liebscher, Axel, Menchetti, Silvio, Pan, Yuanming, Pasero, Marco (2006) Recommended nomenclature of epidote-group minerals. European Journal of Mineralogy, 18 (5) 551-567 doi:10.1127/0935-1221/2006/0018-0551
Alekseev, V. I., Marin, Yu. B., Gembitskaya, I. M. (2013) Allanite-(Y) in areas of ongonite magmatism in the Far East: Isomorphism and petrogenetic implications. Geology of Ore Deposits, 55 (7) 503-514 doi:10.1134/s1075701513070027
Alekseev, V. I., Marin, Yu. B., Gembitskaya, I. M. (2016) Allanite-(Y) and allanite-(Ce) paragenesis in tourmalinite of the Severnyi pluton, Chukchi Peninsula, and the relationship between yttrium and lanthanides in allanite. Geology of Ore Deposits, 58 (8) 674-680 doi:10.1134/s107570151608002x
Skřápková, Lenka; Cempírek, Jan; Škoda, Radek; Filip, Jan; Friis, Henrik; Bosi, Ferdinando (2025) First crystal structure description of allanite-(Y) from the type locality Åskagen, Värmland, Sweden: EPMA, Mössbauer, Raman and SC-XRD data. Mineralogical Magazine, 89 (1). 172-182 doi:10.1180/mgm.2025.20

Localities for Allanite-(Y)Hide

Showing 37 localities.

This 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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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Australia
 
  • Western Australia
    • Mukinbudin Shire
      • Mukinbudin
Calderwood +2 other references
Canada
 
  • Ontario
    • Hastings County
      • Town of Bancroft
        • Dungannon Township
[Bancroft & District Mineral Collecting ...
    • Nipissing District
      • Murchison Township
Dana's New Mineralogy
  • Québec
    • Abitibi-Témiscamingue
      • Rouyn-Noranda TE
Galley et al. (2000)
    • Outaouais
      • Les Collines-de-l'Outaouais RCM
        • Val-des-Monts
          • Saint-Pierre-de-Wakefield
            • Lake Saint-Pierre
Hogarth (1972)
Cyprus
 
  • Nicosia District
    • Spilia
Anenburg et al. (2015)
Czech Republic
 
  • Vysočina Region
    • Třebíč District
Gramblička (n.d.)
Finland
 
  • Lapland
    • Sodankylä
Al-Ani Thair 2012. Detailed SEM study ...
  • South Ostrobothnia
    • Alavus
P. Kartashov analytical data
  • Southwest Finland
    • Kimitoön (Kemiönsaari)
      • Kimitoön Island
Pavel M. Kartashov analytical data. ...
Germany
 
  • Saxony
    • Erzgebirgskreis
      • Großrückerswalde
Kersten (1844) +3 other references
Italy
 
  • Piedmont
    • Verbano-Cusio-Ossola Province
      • Baveno
        • Oltrefiume
          • Mount Camoscio
Grill (1935)
      • Toceno
        • Val di Crana
          • Val di Crana pegmatites
Guastoni et al. (2019)
Guastoni et al. (2019)
Japan
 
  • Ehime Prefecture
    • Imabari City
皆川鉄雄 et al. (2001)
  • Fukushima Prefecture
    • Date District
      • Kawamata
        • Iizaka Village (Iisaka)
SUENO et al. (2002) +2 other references
Norway
 
  • Buskerud
    • Modum
      • Kløftefoss
G. Raade (pers. comm. to U. Kolitsch, May 2009)
  • Nordland
    • Narvik
Husdal (2008)
Husdal (2011)
  • Telemark
    • Bamble
      • Skogstad
Larsen et al. (2016)
Poland
 
  • Lower Silesian Voivodeship
    • Dzierżoniów County
      • Piława Górna
        • DSS Piława Górna Quarry
Pieczka et al. (2015) +1 other reference
    • Wrocław County
      • Gmina Jordanów Śląski
Zelek-Pogudz et al. (2026)
Russia
 
  • Chukotka Autonomous Okrug
    • Bilibinsky District
Alekseev (2025)
    • Chukchi Peninsula (Chukotka Peninsula; Chukotski Peninsula)
Alekseev (2025) +1 other reference
  • Murmansk Oblast
    • Belye Tundry Massif
Voloshin et al. (2005) +1 other reference
    • Lovozersky District
      • Keivy Mountains
Kalashnikov et al. (2016)
  • Republic of Karelia
    • Loukhsky District
      • Chupa pegmatite field
        • Chupa Bay
E.I. Semenov data
Spain
 
  • Community of Madrid
Garcia G. et al. (2004)
Sweden
 
  • Jönköping County
    • Vetlanda
      • Alseda
        • Slättåkra
Blomstrand 1878
  • Norrbotten County
    • Jokkmokk
  • Värmland County
    • Filipstad
      • Persberg ore district
Pavel M. Kartashov (n.d.) +3 other references
USA
 
  • Arizona
    • Mohave County
      • Aquarius Mountains
www.minresco.com/syst/a.htm
  • Colorado
    • Routt County
Eckel et al. (1997)
  • New York
    • Essex County
Rocks & Min. (2007)
        • Moriah Township
gsa.confex.com (2008)
  • Texas
    • Llano County
      • Bluffton
U.S.Geological Survey Bulletin 340 (1908)
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