Hydroxykenomicrolite
A valid IMA mineral species
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About Hydroxykenomicrolite
Formula:
(◻,Na,Sb3+)2Ta2O6(OH,Cs)
initial samples of cesstibtantite were enriched by Cs
Colour:
Grayish, colorless, yellow-orange, black.
Lustre:
Adamantine, Vitreous
Hardness:
5
Specific Gravity:
6.4 - 6.6
Crystal System:
Isometric
Member of:
Type Locality:
First described as "cesstibtantite" by Voloshin et al. (1981). According to the newly revised nomenclature of the pyrochlore supergroup, the type specimen of "cesstibtantite" should be considered as the type specimen of hydroxykenomicrolite.
Unique Identifiers
Mindat ID:
40360
Long-form identifier:
mindat:1:1:40360:1
Similar Names
| Hydrokenomicrolite | A valid IMA mineral species | (◻,H2O)2Ta2(O,OH)6(H2O) |
IMA Classification of Hydroxykenomicrolite
Approved
IMA status notes:
Redefined by the IMA, Renamed by the IMA
IMA Formula:
(◻,Na,Sb3+)2Ta5+2O6(OH)
Approval year:
2010
First published:
1981
Approval history:
1982: Approved by IMA as cesstibtantite (IMA 1982-021)
2010: Redefined and renamed as hydroxykenomicrolite (Atencio et al. 2010)
2010: Redefined and renamed as hydroxykenomicrolite (Atencio et al. 2010)
Classification of Hydroxykenomicrolite
4.DH.
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Hykmic | 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 Hydroxykenomicrolite
Adamantine, Vitreous
Transparency:
Transparent, Opaque
Colour:
Grayish, colorless, yellow-orange, black.
Hardness:
5 on Mohs scale
Hardness:
VHN100=670 - 780 kg/mm2 - Vickers
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
6.4 - 6.6 g/cm3 (Measured) 6.49 g/cm3 (Calculated)
Optical Data of Hydroxykenomicrolite
Type:
Isotropic
Comments:
n = > 1.8
Chemistry of Hydroxykenomicrolite
Mindat Formula:
(◻,Na,Sb3+)2Ta2O6(OH,Cs)
initial samples of cesstibtantite were enriched by Cs
initial samples of cesstibtantite were enriched by Cs
Crystallography of Hydroxykenomicrolite
Crystal System:
Isometric
Class (H-M):
m3m(4/m32/m) - Hexoctahedral
Space Group:
Fd3m
Setting:
Fd3m
Cell Parameters:
a = 10.506(10) Å
Unit Cell V:
1,159.61 ų (Calculated from Unit Cell)
Z:
8
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0014636 | Hydroxykenomicrolite | Ercit T S, Cerny P, Hawthorne F C (1993) Cesstibtantite - a geologic introduction to the inverse pyrochlores Mineralogy and Petrology 48 235-255 | 1993 | Leshaia pegmatite, Kola Peninsula, Russia | 0 | 293 | |
| 0014637 | Hydroxykenomicrolite | Ercit T S, Cerny P, Hawthorne F C (1993) Cesstibtantite - a geologic introduction to the inverse pyrochlores Loclity: Tanco pegmatite, Manitoba, Canada Mineralogy and Petrology 48 235-255 | 1993 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.04 Å | (10) |
| 1.860 Å | (10) |
| 1.587 Å | (10) |
| 1.012 Å | (10) |
| 3.17 Å | (9) |
| 1.370 Å | (9) |
| 1.017 Å | (9) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites |
Type Occurrence of Hydroxykenomicrolite
General Appearance of Type Material:
greyish adamantine grains
Place of Conservation of Type Material:
Mining Museum, St. Petersburg (1324/1); Geology Museum, Kola Branch, Academy of Sciences, Apatity (5518); A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia (80827, 81058, vis6317).
Geological Setting of Type Material:
Albitized zones of granite pegmatite, Kola, Russia
Associated Minerals at Type Locality:
Synonyms of Hydroxykenomicrolite
Other Language Names for Hydroxykenomicrolite
Dutch:Hydroxykenomicroliet
German:Hydroxykenomikrolith
Relationship of Hydroxykenomicrolite to other Species
Member of:
Other Members of Microlite Group:
| Fluorcalciomicrolite | (Ca,Na)2(Ta,Nb)2O6F | Iso. m3m(4/m32/m) : Fd3m |
| Fluornatromicrolite | (Na1.5Bi0.5)Ta2O6F | Iso. m3m(4/m32/m) : Fd3m |
| Hydrokenomicrolite | (◻,H2O)2Ta2(O,OH)6(H2O) | Iso. m3m(4/m32/m) |
| 'Hydromicrolite' | (H2O,◻)2Ta2(O,OH)6(H2O) | |
| Hydroxycalciomicrolite | Ca1.5Ta2O6(OH) | Iso. 432 : P4232 |
| 'Hydroxylstibiomicrolite' | (Sb,Ca,Na)2(Ta,Nb)2O6(OH) | Iso. |
| 'Hydroxynatromicrolite' | (Na,Bi3+,◻)2Ta2O6(OH) | Iso. m3m(4/m32/m) : Fd3m |
| Kenomicrolite | ◻2Ta2[O4(OH)2]◻ | Iso. m3m(4/m32/m) : Fd3m |
| Kenoplumbomicrolite | (Pb,◻)2Ta2O6(◻,OH,O) | Iso. |
| Oxybismutomicrolite | (Bi1.33◻0.67)Σ2Ta2O6O | Iso. m3m(4/m32/m) : Fd3m |
| Oxycalciomicrolite | Ca2Ta2O6O | Iso. m3m(4/m32/m) : Fd3m |
| Oxystannomicrolite | Sn2Ta2O6O | Iso. m3m(4/m32/m) : Fd3m |
| Oxystibiomicrolite | (Sb3+,Ca)2Ta2O6O | Iso. m3m(4/m32/m) : Fd3m |
| 'Uranmicrolite (of Hogarth 1977)' | (Ca,U,Na)2-x(Ta,Nb)2(O,OH)7 | Iso. |
| 'Yttromicrolite (of Hogarth)' | (Ca,Y3+,U,Na)2-x(Ta,Nb,Ti,Fe3+)2O7 | Iso. m3m(4/m32/m) : Fd3m |
Common Associates
Associations Based on Photo Data:
| 4 photos of Hydroxykenomicrolite associated with Simpsonite | Al4Ta3O13(OH) |
| 2 photos of Hydroxykenomicrolite associated with Tantalite-(Mn) | Mn2+Ta2O6 |
| 2 photos of Hydroxykenomicrolite associated with Tantalowodginite | (Mn2+0.5◻0.5)TaTa2O8 |
| 2 photos of Hydroxykenomicrolite associated with Titanowodginite | Mn2+TiTa2O8 |
| 1 photo of Hydroxykenomicrolite associated with Cookeite | (LiAl4◻)[AlSi3O10](OH)8 |
| 1 photo of Hydroxykenomicrolite associated with 'Uranmicrolite (of Hogarth 1977)' | (Ca,U,Na)2-x(Ta,Nb)2(O,OH)7 |
Related Minerals - Strunz-mindat Grouping
| 4.DH. | Cesiokenopyrochlore | ◻Nb2(O,OH)6(Cs,◻) |
| 4.DH. | Roméite Group | A2(Sb5+)2O6Z |
| 4.DH. | Oxyplumboroméite | Pb2Sb2O6O |
| 4.DH. | Fluornatropyrochlore | (Na,Pb,Ca,REE,U)2Nb2O6F |
| 4.DH. | 'Fluornatroroméite' | (Na,Ca)2Sb2(O,OH)6F |
| 4.DH. | Oxyyttrobetafite-(Y) | Y2Ti2O6O |
| 4.DH.05 | Thorutite | (Th,U,Ca)Ti2(O,OH)6 |
| 4.DH.05 | Orthobrannerite | U4+U6+Ti4O12(OH)2 |
| 4.DH.05 | Brannerite | UTi2O6 |
| 4.DH.10 | Kassite | CaTi2O4(OH)2 |
| 4.DH.10 | Lucasite-(La) | |
| 4.DH.10 | Lucasite-(Ce) | CeTi2(O,OH)6 |
| 4.DH.15 | 'Fluorhydropyrochlore' | |
| 4.DH.15 | Hydrokenoelsmoreite | ◻2W2O6(H2O) |
| 4.DH.15 | 'Hydroxynatromicrolite' | (Na,Bi3+,◻)2Ta2O6(OH) |
| 4.DH.15 | Hydroplumboelsmoreite | (Pb,◻)(W,Fe3+)2O6 · H2O |
| 4.DH.15 | Hydropyrochlore | (H2O,◻)2Nb2(O,OH)6(H2O) |
| 4.DH.15 | 'Unnamed (Sb-analogue of Hydroxymanganopyrochlor)' | (Mn,Ca,Y)2(Sb,Ti)2O6(OH) |
| 4.DH.15 | Hydroxynatropyrochlore | (Na,Ca,Ce)2Nb2O6(OH) |
| 4.DH.15 | Hydrokenopyrochlore | (◻,x)2Nb2O6(H2O,Cs) |
| 4.DH.15 | Oxybismutomicrolite | (Bi1.33◻0.67)Σ2Ta2O6O |
| 4.DH.15 | Kenomicrolite | ◻2Ta2[O4(OH)2]◻ |
| 4.DH.15 | Fluornatromicrolite | (Na1.5Bi0.5)Ta2O6F |
| 4.DH.15 | 'Oxynatropyrochlore' | (Na,Ca,U)2Nb2O6(O,OH) |
| 4.DH.15 | Hydroxycalciopyrochlore | (Ca,Na,U,◻)2(Nb,Ti)2O6(OH) |
| 4.DH.15 | Fluorcalciopyrochlore | (Ca,Na)2(Nb,Ti)2O6F |
| 4.DH.15 | Oxycalciopyrochlore | Ca2Nb2O6O |
| 4.DH.15 | 'Fluorstrontiopyrochlore' | (Sr,◻)2Nb2(O,OH)6F |
| 4.DH.15 | Oxyplumbopyrochlore | Pb2Nb2O6O |
| 4.DH.15 | 'Fluorplumbopyrochlore' | (Pb,Y,Th,U,Na,Ca)2-x(Nb,Ti)2O6F |
| 4.DH.15 | 'Bismutomicrolite (of Hogarth 1977)' | |
| 4.DH.15 | 'Bismutopyrochlore (of Chukanov et al.)' | (Bi,Ca,U,Pb)2-xNb2(O,OH)6(OH) |
| 4.DH.15 | 'Kenoplumbopyrochlore' | (Pb,◻)Nb2O6(◻,O) |
| 4.DH.15 | Hydroxyplumbopyrochlore | (Pb1.5◻0.5)Nb2O6(OH) |
| 4.DH.15 | 'Stibiomicrolite (of Groat et al.)' | |
| 4.DH.15 | 'Oxyyttropyrochlore-(Y)' | (Y,◻)2Nb2O6O |
| 4.DH.15 | 'Fluorkenopyrochlore' | (◻,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F |
| 4.DH.15 | Hydroxycalciomicrolite | Ca1.5Ta2O6(OH) |
| 4.DH.15 | 'Strontiopyrochlore (of Hogarth 1977)' | (Sr,Ce,Ca)0.66(Nb,Fe)2(O,OH)7 |
| 4.DH.15 va | 'Alumotungstite' | ◻2W2O6(H2O) |
| 4.DH.15 | 'Oxycalciobetafite' | Ca2(Ti,Nb)2O6O |
| 4.DH.15 | 'Oxyuranobetafite' | (U,Ca,◻)2(Ti,Nb)2O6O |
| 4.DH.15 | Fluorcalciomicrolite | (Ca,Na)2(Ta,Nb)2O6F |
| 4.DH.15 | Oxycalciomicrolite | Ca2Ta2O6O |
| 4.DH.15 | Oxystannomicrolite | Sn2Ta2O6O |
| 4.DH.15 | Kenoplumbomicrolite | (Pb,◻)2Ta2O6(◻,OH,O) |
| 4.DH.15 | Oxynatromicrolite | (Na,Ca,U)2(Ta,Nb)2O6(O,F) |
| 4.DH.15 | Oxystibiomicrolite | (Sb3+,Ca)2Ta2O6O |
| 4.DH.15 | 'Hydromicrolite' | (H2O,◻)2Ta2(O,OH)6(H2O) |
| 4.DH.15 | 'Plumbomicrolite (of Hogarth 1977)' | |
| 4.DH.15 | Hydrokenomicrolite | (◻,H2O)2Ta2(O,OH)6(H2O) |
| 4.DH.15 | Hydroxykenoelsmoreite | (◻,Pb)2(W,Fe3+,Al)2(O,OH)6(OH) |
| 4.DH.15 va | 'Yttromicrolite (of Hogarth)' | (Ca,Y3+,U,Na)2-x(Ta,Nb,Ti,Fe3+)2O7 |
| 4.DH.15 | Hydroxykenopyrochlore | (◻,Ce,Ba)2(Nb,Ti)2O6(OH,F) |
| 4.DH.15 | Hydroxymanganopyrochlore | (Mn2+,Th,Na,Ca,REE)2(Nb,Ti)2O6(OH) |
| 4.DH.20 | 'Cuproroméite' | Cu2Sb2(O,OH)7 |
| 4.DH.20 | Hydroxycalcioroméite | (Ca,Sb3+)2(Sb5+,Ti)2O6(OH) |
| 4.DH.20 | Bindheimite | Pb2Sb2O6O |
| 4.DH.20 | Hydroxyferroroméite | (Fe2+1.5◻0.5)Sb5+2O6(OH) |
| 4.DH.20 | Fluorcalcioroméite | (Ca,Na,◻)2Sb5+2(O,OH)6F |
| 4.DH.20 | Oxycalcioroméite | Ca2Sb2O6O |
| 4.DH.20 | Stetefeldtite | Ag2Sb2(O,OH)7 |
| 4.DH.20 | Stibiconite | Sb3+Sb5+2O6(OH) |
| 4.DH.20 | Monimolite | Pb2Sb5+2O7 |
| 4.DH.25 | Rosiaite | PbSb5+2O6 |
| 4.DH.30 | Stefanweissite | (Ca,REE)2Zr2(Nb,Ti)(Ti,Nb)2Fe2+O14 |
| 4.DH.30 | Zirconolite | CaZrTi2O7 |
| 4.DH.30 | Laachite | (Ca,Mn)2Zr2Nb2TiFeO14 |
| 4.DH.30 | Nöggerathite-(Ce) | (Ce,Ca)2Zr2(Nb,Ti)(Ti,Nb)2Fe2+O14 |
| 4.DH.35 | Liandratite | U(Nb,Ta)2O8 |
| 4.DH.35 | Petscheckite | UFe(Nb,Ta)2O8 |
| 4.DH.40 | Ingersonite | Ca3Mn2+Sb5+4O14 |
| 4.DH.45 | Pittongite | Na0.22(W,Fe3+)(O,OH)3 · 0.44H2O |
| 4.DH.50 | Tazzoliite | Ba4-xNaxTi2Nb3SiO17[PO2(OH)2]x(OH)(1-2x) |
Fluorescence of Hydroxykenomicrolite
Orange under long wave ultraviolet light
Other Information
Notes:
weak yellowish cathodoluminescence
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 Hydroxykenomicrolite
mindat.org URL:
https://www.mindat.org/min-40360.html
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References for Hydroxykenomicrolite
Reference List:
Fleischer, M., Burns, R.G., Cabri, L.J., Francis, C.A., Pabst, A. (1982) New mineral names. American Mineralogist, 67, 413-418.[as cesstibtantite]
Ercit, T. S., Černý, P., Hawthorne, F. C. (1993) Cesstibtantite—a geologic introduction to the inverse pyrochlores. Mineralogy and Petrology, 48 (2) 235-255 doi:10.1007/bf01163101(as cesstibtantite)
Atencio, D., Andrade, M. B., Christy, A. G., Giere, R., Kartashov, P. M. (2010) The pyrochlore supergroup of minerals: nomenclature. The Canadian Mineralogist, 48 (3) 673-698 doi:10.3749/canmin.48.3.673
Localities for Hydroxykenomicrolite
Showing 9 localities.
Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Argentina | |
| Demartis et al. (2014) |
Australia | |
| Nickel et al. (1985) +1 other reference |
Canada | |
| 153-155. +2 other references |
| Černý et al. (2012) |
Czech Republic | |
| Novák et al. (1999) |
Madagascar | |
| C. Stefano photo & Specimen -obtained ... |
Russia | |
| Ivanyuk et al. (2018) |
| Voloshin et al. (1981) +2 other references |
Sweden | |
| Uher et al. (2008) +1 other reference |
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Vasin-Myl'k Mt, Voron'i Tundry, Murmansk Oblast, Russia