Iimoriite-(Y) (original) (raw)
A valid IMA mineral species
About Iimoriite-(Y)Hide
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Colour:
Buff-tan, light purplish gray
Lustre:
Vitreous, Resinous
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.
A silico-carbonate of yttrium found in REE- and uranium-bearing granitic pegmatites and veins. Found as alteration product after thalénite-(Y) from the Suishoyama pegmatite, Japan together with tengerite-(Y) (Kato & Nagashima 1970) and at the Åskagen pegmatite, Sweden.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:2006:6
b3bf5c01-bbe5-4707-8f2d-12f07ae2f2cd
IMA Classification of Iimoriite-(Y)Hide
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IMA status notes:
Renamed by the IMA
IMA Formula:
Y2(SiO4)(CO3)
Approval history:
Approved by IMA in 1967 (IMA1967-033).
Type description reference:
Classification of Iimoriite-(Y)Hide
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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
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Iim-Y | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Iimoriite-(Y)Hide
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Colour:
Buff-tan, light purplish gray
Comment:
Colourless in thin section (TL)
Streak:
White with purplish gray-tint
Cleavage:
Distinct/Good
distinct on (011)
Density:
4.47 g/cm3 (Measured) 4.91 g/cm3 (Calculated)
Optical Data of Iimoriite-(Y)Hide
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RI values:
_n_α = 1.753 _n_β = 1.824 _n_γ = 1.830
2V:
Measured: 31° , Calculated: 32°
δ = 0.077
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Dispersion:
distinct to strong
Pleochroism:
Non-pleochroic
Chemistry of Iimoriite-(Y)Hide
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Mindat Formula:
Y2[SiO4][CO3]
Chemical AnalysisHide
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Empirical formulas:
| Sample ID | Empirical Formula |
|---|---|
| 1 | (Y1.51Yb0.14Dy0.09Er0.06Gd0.05Lu0.03Tb0.01)S1.89(SiO4)(CO3)1.12 |
Crystallography of Iimoriite-(Y)Hide
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Class (H-M):
1 - Pinacoidal
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
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005503 | Iimoriite-(Y) | 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 |  |
1996 | Bokan Mountain, Prince of Wales Island, Alaska, USA | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.881 Å | (100) |
| 2.954 Å | (80) |
| 2.784 Å | (40) |
| 3.023 Å | (36) |
| 2.841 Å | (35) |
| 2.705 Å | (29) |
| 3.20 Å | (27) |
Geological EnvironmentHide
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Type Occurrence of Iimoriite-(Y)Hide
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General Appearance of Type Material:
As masses up to 3 x 3 x 2 cm in size.
Place of Conservation of Type Material:
National Science Museum, Tokyo, Japan, M16288; National Museum of Natural History, Washington, D.C., USA, 120635.
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
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Other Language Names for Iimoriite-(Y)Hide
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Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 9.AH. | Fluorbritholite-(Nd) | Ca2Nd3(SiO4)3F | Hex. 6/m : _P_63/m |
|---|---|---|---|
| 9.AH.10 | Tundrite-(Ce) | Na2Ce2Ti(SiO4)(CO3)2O2 | Tric. 1 : _P_1 |
| 9.AH.10 | Tundrite-(Nd) | Na2(Nd,Ce)2Ti(SiO4)(CO3)2O2 | |
| 9.AH.15 | Spurrite | Ca5(SiO4)2(CO3) | Mon. 2/m : _P_21/b |
| 9.AH.15 | Galuskinite | Ca7(SiO4)3(CO3) | Mon. 2/m : _P_21/b |
| 9.AH.20 | Ternesite | Ca5(SiO4)2(SO4) | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 9.AH.20 | Silicocarnotite | Ca5[(SiO4)(PO4)](PO4) | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 9.AH.25 | Britholite-(Ce) | (Ce,Ca)5(SiO4)3OH | Hex. 6/m : _P_63/m |
| 9.AH.25 | Britholite-(Y) | (Y,Ca)5(SiO4)3OH | Hex. 6/m : _P_63/m |
| 9.AH.25 | Chlorellestadite | Ca5(SiO4)1.5(SO4)1.5Cl | Hex. 6/m : _P_63/m |
| 9.AH.25 | Fluorbritholite-(Ce) | (Ce,Ca)5(SiO4)3F | Hex. 6/m : _P_63/m |
| 9.AH.25 | Fluorellestadite | Ca5(SiO4)1.5(SO4)1.5F | Hex. 6/m : _P_63/m |
| 9.AH.25 | Hydroxylellestadite | Ca5(SiO4)1.5(SO4)1.5(OH) | Hex. 6/m m m _(_6/_m_2/_m_2/m ) : _P_63/m c m |
| 9.AH.25 | Mattheddleite | Pb5(SiO4)1.5(SO4)1.5(Cl,OH) | Hex. 6/m : _P_63/m |
| 9.AH.25 | Tritomite-(Ce) | Ce5(SiO4,BO4)3(OH,O) | |
| 9.AH.25 | Tritomite-(Y) | Y5(SiO4,BO4)3(O,OH,F) | |
| 9.AH.25 | Fluorcalciobritholite | (Ca,REE)5(SiO4,PO4)3F | Hex. 6/m : _P_63/m |
| 9.AH.25 | Fluorbritholite-(Y) | (Y,Ca)5(SiO4)3F | Hex. 6/m : _P_63/m |
| 9.AH.25 | Britholite-(La) | Ca2(La,Ce,Ca)3(SiO4,PO4)3(OH,F) | |
| 9.AH.25 | Calciobritholite | (Ca,Y)5(SiO4,PO4)3(OH) | |
| 9.AH.35 | Nabimusaite | KCa12(SiO4)4(SO4)2O2F | Trig. 3_m_ _(_32/m ) : R_3_m |
| 9.AH.35 | Dargaite | BaCa12(SiO4)4(SO4)2O3 | Trig. 3_m_ : R_3_m |
| 9.AH.40 | Zadovite | BaCa6[(SiO4)(PO4)](PO4)2F | Trig. 3_m_ : R_3_m |
| 9.AH.40 | Gazeevite | BaCa6(SiO4)2(SO4)2O | Trig. 3_m_ _(_32/m ) : R_3_m |
| 9.AH.40 | Stracherite | BaCa6(SiO4)2[(PO4)(CO3)]2F | Trig. 3_m_ _(_32/m ) : R_3_m |
| 9.AH.45 | Flamite | Ca8-x(Na,K)x(SiO4)4-x(PO4)x | Orth. m _m_2 |
| 9.AH.50 | Byzantievite | Ba5(Ca,REE,Y)22(Ti,Nb)18(SiO4)4[(PO4),(SiO4)]4(BO3)9O22[(OH),F]43(H2O)1.5 | Trig. 3 : _R_3 |
| 9.AH.55 | Greenwoodite | (Ba,V3+O)2V3+9(Fe3+,Fe2+)2Si2O22 | Trig. 3_m_ _(_32/m ) : _P_3_m_1 |
| 9.AH.60 | Kihlmanite-(Ce) | Ce2TiO2(SiO4)(HCO3)2(H2O) | Tric. 1 : _P_1 |
| 9.AH.65 | Tsangpoite | Ca5(PO4)2(SiO4) | Hex. |
| 9.AH.70 | Enalite | (Th,REE,Al) [(PO4),(SiO4),(OH)] | Tet. |
Fluorescence of Iimoriite-(Y)Hide
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Other InformationHide
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Notes:
Slight reaction with cold HCl.
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 Iimoriite-(Y)Hide
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References for Iimoriite-(Y)Hide
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Reference List:
Localities for Iimoriite-(Y)Hide
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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
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- 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.
| Angola | |
|---|---|
| Huambo Province Bailundo ⓘ Bailundo | Beleque (2010) |
| France | |
| Occitanie Ariège Foix Luzenac ⓘ Trimouns Talc Mine |
Gatel (1990) |
| Japan (TL) | |
| Fukushima Prefecture Date District Kawamata ⓘ Fusamata (TL) | Kato et al. (1970) |
| Iizaka Village (Iisaka) ⓘ Suishoyama pegmatite (Suishouyama; Suisyoyama; Suishyoyama) | Kato et al. (1970) |
| Norway | |
| Nordland Hamarøy Drag ⓘ Lapplægeret | Raade (2007) |
| ⓘ Øvre Lapplægeret Quarry | Husdal (2011) |
| Narvik ⓘ Hundholmen | Husdal (2019) |
| Russia | |
| Murmansk Oblast Lovozersky District Keivy Mountains Western Keivy Massif ⓘ Ploskaya Mt | Voloshin A.V. et al. (1987) |
| Sweden | |
| Värmland County Filipstad Persberg ore district ⓘ Åskagen Quarry | Kristiansen (1993) |
| USA | |
| Alaska Prince of Wales-Hyder Census Area Ketchikan Mining District Prince of Wales Island Bokan Mountain ⓘ I and L No. 4 claim | Foord et al. (1984) |