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Iimoriite-(Y)

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Satoyasu Iimori and Takeo Iimori
Formula:
Y2[SiO4][CO3]
Colour:
Buff-tan, light purplish gray
Lustre:
Vitreous, Resinous
Hardness:
5½ - 6
Specific Gravity:
4.47
Crystal System:
Triclinic
Name:
Named iimoriite by A. Kato and K. Nagashima in 1970 in honor of Satoyasu Iimori (飯盛里安)(19 October 1885, Kanazawa, Ishikawa Prefecture, Japan - 13 October 1982, Japan) and Takeo Iimori (飯盛武夫)( - 16 August 1942), Japanese chemists who first described many rare earth minerals from the Fusamata pegmatite district. The suffix was added in 1985.
Slight reaction with cold HCl.


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Classification of Iimoriite-(Y)Hide

Approved
Approval Year:
1967
First Published:
1970
9.AH.05

9 : SILICATES (Germanates)
A : Nesosilicates
H : Nesosilicates with CO3, SO4, PO4, etc.
53.1.3.1

53 : NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations
1 : Insular SiO4 Groups and Other Anions of Complex Cations with (CO3)
17.4.9

17 : Silicates Containing other Anions
4 : Silicates with carbonates

Physical Properties of Iimoriite-(Y)Hide

Vitreous, Resinous
Transparency:
Transparent
Colour:
Buff-tan, light purplish gray
Comment:
Colourless in thin section (TL)
Streak:
White with purplish gray-tint
Hardness:
5½ - 6 on Mohs scale
Cleavage:
Distinct/Good
(011)
Density:
4.47 g/cm3 (Measured)    4.36 g/cm3 (Calculated)

Optical Data of Iimoriite-(Y)Hide

Type:
Biaxial (-)
RI values:
nα = 1.753 nβ = 1.824 nγ = 1.830
2V:
Measured: 31° , Calculated: 30°
Max Birefringence:
δ = 0.077
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
distinct to strong
Pleochroism:
Non-pleochroic

Chemical Properties of Iimoriite-(Y)Hide

Formula:
Y2[SiO4][CO3]
IMA Formula:
Y2(SiO4)(CO3)

Crystallography of Iimoriite-(Y)Hide

Crystal System:
Triclinic
Cell Parameters:
a = 6.573 Å, b = 6.651 Å, c = 6.454 Å
α = 116.44°, β = 92.34°, γ = 95.63°
Ratio:
a:b:c = 0.988 : 1 : 0.97
Unit Cell V:
250.3 ų
Z:
2

Occurrences of Iimoriite-(Y)Hide

Paragenetic Mode(s):

Type Occurrence of Iimoriite-(Y)Hide

General Appearance of Type Material:
As masses up to 3 x 3 x 2 cm in size

Geological Setting of Type Material:
Quartz-microcline-pegmatite
Associated Minerals at Type Locality:
Reference:
Kato, A., Nagashima, K. (1970) Iimoriite (Y,Ca,Zr)15(Mg,Fe3+,Al)(Si,Al,P)9O34(OH)16 in: Introduction to Japanese minerals, Geological Survey of Japan: 39: 85-86.

Synonyms of Iimoriite-(Y)Hide

Other Language Names for Iimoriite-(Y)Hide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Tengerite-(Y)5 photos of Iimoriite-(Y) associated with Tengerite-(Y) on mindat.org.
Allanite-(Nd)4 photos of Iimoriite-(Y) associated with Allanite-(Nd) on mindat.org.
Dolomite3 photos of Iimoriite-(Y) associated with Dolomite on mindat.org.
Keiviite-(Y)3 photos of Iimoriite-(Y) associated with Keiviite-(Y) on mindat.org.
Allanite-(Y)2 photos of Iimoriite-(Y) associated with Allanite-(Y) on mindat.org.
Thalénite-(Y)1 photo of Iimoriite-(Y) associated with Thalénite-(Y) on mindat.org.
Quartz1 photo of Iimoriite-(Y) associated with Quartz on mindat.org.
Allanite-(Ce)1 photo of Iimoriite-(Y) associated with Allanite-(Ce) on mindat.org.
Pyrite1 photo of Iimoriite-(Y) associated with Pyrite on mindat.org.
Yttrofluorite1 photo of Iimoriite-(Y) associated with Yttrofluorite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.AH.10Tundrite-(Ce)Na2Ce2Ti(SiO4)(CO3)2O2Tric. 1 : P1
9.AH.10Tundrite-(Nd)Na2(Nd,Ce)2Ti(SiO4)(CO3)2O2
9.AH.15SpurriteCa5(SiO4)2(CO3)Mon.
9.AH.20TernesiteCa5(SiO4)2(SO4)Orth. mmm (2/m 2/m 2/m) : Pnma
9.AH.25Britholite-(Ce)(Ce,Ca)5(SiO4)3OHHex. 6/m : P63/m
9.AH.25Britholite-(Y)(Y,Ca)5(SiO4)3OHHex. 6/m : P63/m
9.AH.25ChlorellestaditeCa5(SiO4)1.5(SO4)1.5ClHex. 6/m : P63/m
9.AH.25Fluorbritholite-(Ce)(Ce,Ca)5(SiO4)3FHex. 6/m : P63/m
9.AH.25FluorellestaditeCa5(SiO4)1.5(SO4)1.5FHex.
9.AH.25HydroxylellestaditeCa5(SiO4)1.5(SO4)1.5(OH)Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
9.AH.25MattheddleitePb5(SiO4)1.5(SO4)1.5(Cl,OH)Hex. 6/m : P63/m
9.AH.25Tritomite-(Ce)Ce5(SiO4,BO4)3(OH,O)
9.AH.25Tritomite-(Y)Y5(SiO4,BO4)3(O,OH,F)
9.AH.25Fluorcalciobritholite(Ca,REE)5(SiO4,PO4)3FHex. 6/m : P63/m
9.AH.25Fluorbritholite-(Y)(Y,Ca)5(SiO4)3FHex. 6/m : P63/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.4.1TilleyiteCa5(Si2O7)(CO3)2Mon.
17.4.2SpurriteCa5(SiO4)2(CO3)Mon.
17.4.3ParaspurriteCa5(SiO4)2(CO3)Mon.
17.4.4ScawtiteCa7(Si3O9)2CO3 · 2H2OMon. 2/m
17.4.5FukaliteCa4[Si2O6][CO3](OH)2Mon. 2/m : P21/b
17.4.6MeioniteCa4Al6Si6O24CO3Tet. 4/m : I4/m
17.4.7Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2OHex. 6 : P63
17.4.8CarletoniteKNa4Ca4Si8O18(CO3)4(OH,F) · H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mbm
17.4.10Kainosite-(Y)Ca2(Y,Ce)2(Si4O12)(CO3) · H2OOrth. mmm (2/m 2/m 2/m)
17.4.11Caysichite-(Y)Ca2Y2Si4O10(CO3)3 · 4H2OOrth. mm2
17.4.12Lepersonnite-(Gd)Ca(Gd,Dy)2(UO2)24(SiO4)4(CO3)8(OH)24 · 48H2O
17.4.13AshburtonitePb4Cu4(Si4O12)(HCO3)4(OH)3Cl · H2OTet.
17.4.14Surite(Pb,Ca)3(Al,Fe2+,Mg)2((Si,Al)4O10)(CO3)2(OH)2Mon.
17.4.15Tundrite-(Ce)Na2Ce2Ti(SiO4)(CO3)2O2Tric. 1 : P1
17.4.16Tundrite-(Nd)Na2(Nd,Ce)2Ti(SiO4)(CO3)2O2

Fluorescence of Iimoriite-(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.

References for Iimoriite-(Y)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kato, A., Nagashima, K. (1970) Iimoriite (Y,Ca,Zr)15(Mg,Fe3+,Al)(Si,Al,P)9O34(OH)16 in: Introduction to Japanese minerals, Geological Survey of Japan: 39: 85-86.
Fleischer, M. (1973) New mineral names. American Mineralogist: 58: 139-141. (abstract)
Foord, E.E., Staatz, M.H., Conklin, N.M. (1984) New data for iimoriite. American Mineralogist: 69: 196-199.
Nickel, E.H., Mandarino, J.A. (1987) Procedures involving the IMA Commission on New Minerals and Mineral Names and guidelines on mineral nomenclature. American Mineralogist: 72: 1031-1042.
Hughes, J.M., Foord, E.E., Jai-Nhuknan, J., Bell, J.M. (1996) The atomic arrangement of iimoriite-(Y), Y2(SiO4)(CO3). The Canadian Mineralogist: 34: 817-820.

Internet Links for Iimoriite-(Y)Hide

Localities for Iimoriite-(Y)Hide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Angola
 
  • Huambo Province
    • Bailundo City Council
Beleque, A. R. C. (2010). Minerais de ETR no complexo carbonatítico de Bailundo (Mungo, Angola): ocorrência, composição e significado económico.
France
 
  • Occitanie
    • Ariège
      • Luzenac
[Le Cahier des Micromonteurs 1990, 4, p.3,8-12]
Japan (TL)
 
  • Honshu Island
    • Tohoku Region
      • Fukushima Prefecture
        • Kawamata
Kato, A. & Nagashima, K. (1970): Introduction to Japanese Minerals. Geological Survey of Japan, 39: 85-86.
          • Iizaka Village (Iisaka)
Kato, A. & Nagashima, K. (1970): Introduction to Japanese Minerals. Geological Survey of Japan, 39: 85-86.
Norway
 
  • Nordland
    • Tysfjord
      • Drag
Gunnar Raade: Minerals of Norway - the complete inventory. Kongsberg Mineralsymposium 2007, Kongsberg 2007
Husdal, T. (2011): Tysfjordgranittens pegmatitter. Stein. 38 (4): 4-35
Russia
 
  • Northern Region
    • Murmanskaya Oblast'
      • Keivy Mountains
        • Western Keivy Massif
Voloshin A.V., Pakhomovskii Ya.A. [Волошин А.В., Пахомовский Я.А.] (1987): Iimoriite from amazonite pegmatites of the Kola Peninsula (first find in USSR) [Ииморит из амазонитовых пегматитов Кольского полуострова (первая находка в СССР)]. In: Belkov I.V. (Ed.), Mineralogical associations and minerals in the magmatic complexes of the Kola Peninsula [Белков И.В. (ред.), Минеральные ассоциации и минералы магматических комплексов Кольского полуострова]. Kola Branch, USSR Academy of Science Press [Изд. КолФАН СССР], Apatity, pages 34-42 (in Russian).
Sweden
 
  • Värmland
    • Filipstad
      • Persberg district
Kristiansen, Roy (1993): Thalenitt-liknende mineraler fra Åskagen, Sverige. STEIN 20 (19), 7-8 + 58-60
USA
 
  • Alaska
    • Prince of Wales-Outer Ketchikan Borough
      • Ketchikan District
        • Prince of Wales Island
          • Bokan Mountain
Foord, E.E., Staatz, M.H., and Conklin, N.M. (1984) New data for iimoriite. American Mineralogist: 69: 196-199.
Mineral and/or Locality  
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