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Hydroxykenomicrolite

A valid IMA mineral species
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About HydroxykenomicroliteHide

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
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 IdentifiersHide

Mindat ID:
40360
Long-form identifier:
mindat:1:1:40360:1

Similar NamesHide

HydrokenomicroliteA valid IMA mineral species(◻,H2O)2Ta2(O,OH)6(H2O)

IMA Classification of HydroxykenomicroliteHide

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)

Classification of HydroxykenomicroliteHide

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

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

Physical Properties of HydroxykenomicroliteHide

Adamantine, Vitreous
Transparency:
Transparent, Opaque
Colour:
Grayish, colorless, yellow-orange, black.
Hardness:
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 HydroxykenomicroliteHide

Type:
Isotropic
Comments:
n = > 1.8

Chemistry of HydroxykenomicroliteHide

Mindat Formula:
(◻,Na,Sb3+)2Ta2O6(OH,Cs)

initial samples of cesstibtantite were enriched by Cs
Element Weights:
Element% weight
Ta76.205 %
O23.583 %
H0.212 %

Calculated from ideal end-member formula.

Crystallography of HydroxykenomicroliteHide

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 StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0014636HydroxykenomicroliteErcit T S, Cerny P, Hawthorne F C (1993) Cesstibtantite - a geologic introduction to the inverse pyrochlores Mineralogy and Petrology 48 235-2551993Leshaia pegmatite, Kola Peninsula, Russia0293
0014637HydroxykenomicroliteErcit T S, Cerny P, Hawthorne F C (1993) Cesstibtantite - a geologic introduction to the inverse pyrochlores Loclity: Tanco pegmatite, Manitoba, Canada Mineralogy and Petrology 48 235-25519930293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
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 EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites

Type Occurrence of HydroxykenomicroliteHide

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 HydroxykenomicroliteHide

Other Language Names for HydroxykenomicroliteHide

Relationship of Hydroxykenomicrolite to other SpeciesHide

Other Members of Microlite Group:
Fluorcalciomicrolite(Ca,Na)2(Ta,Nb)2O6FIso. m3m(4/m32/m) : Fd3m
Fluornatromicrolite(Na1.5Bi0.5)Ta2O6FIso. m3m(4/m32/m) : Fd3m
Hydrokenomicrolite(◻,H2O)2Ta2(O,OH)6(H2O)Iso. m3m(4/m32/m)
'Hydromicrolite'(H2O,◻)2Ta2(O,OH)6(H2O)
HydroxycalciomicroliteCa1.5Ta2O6(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
Kenomicrolite2Ta2[O4(OH)2]◻Iso. m3m(4/m32/m) : Fd3m
Kenoplumbomicrolite(Pb,◻)2Ta2O6(◻,OH,O)Iso.
Oxybismutomicrolite(Bi1.330.67)Σ2Ta2O6OIso. m3m(4/m32/m) : Fd3m
OxycalciomicroliteCa2Ta2O6OIso. m3m(4/m32/m) : Fd3m
OxystannomicroliteSn2Ta2O6OIso. m3m(4/m32/m) : Fd3m
Oxystibiomicrolite(Sb3+,Ca)2Ta2O6OIso. m3m(4/m32/m) : Fd3m
'Uranmicrolite (of Hogarth 1977)'(Ca,U,Na)2-x(Ta,Nb)2(O,OH)7Iso.
'Yttromicrolite (of Hogarth)'(Ca,Y3+,U,Na)2-x(Ta,Nb,Ti,Fe3+)2O7Iso. m3m(4/m32/m) : Fd3m

Common AssociatesHide

Associations Based on Photo Data:
4 photos of Hydroxykenomicrolite associated with SimpsoniteAl4Ta3O13(OH)
2 photos of Hydroxykenomicrolite associated with Tantalite-(Mn)Mn2+Ta2O6
2 photos of Hydroxykenomicrolite associated with Tantalowodginite(Mn2+0.50.5)TaTa2O8
2 photos of Hydroxykenomicrolite associated with TitanowodginiteMn2+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 GroupingHide

4.DH.Cesiokenopyrochlore◻Nb2(O,OH)6(Cs,◻) Iso. m3m(4/m32/m) : Fd3m
4.DH.Roméite GroupA2(Sb5+)2O6Z
4.DH.OxyplumboroméitePb2Sb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.Fluornatropyrochlore(Na,Pb,Ca,REE,U)2Nb2O6FIso. m3m(4/m32/m)
4.DH.'Fluornatroroméite'(Na,Ca)2Sb2(O,OH)6F
4.DH.Oxyyttrobetafite-(Y)Y2Ti2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.05Thorutite(Th,U,Ca)Ti2(O,OH)6Mon.
4.DH.05OrthobranneriteU4+U6+Ti4O12(OH)2Orth.
4.DH.05BranneriteUTi2O6Mon. 2/m : B2/m
4.DH.10KassiteCaTi2O4(OH)2Mon. 2/m : P21/b
4.DH.10Lucasite-(La)Mon. 2 : B2
4.DH.10Lucasite-(Ce)CeTi2(O,OH)6Mon.
4.DH.15'Fluorhydropyrochlore'
4.DH.15Hydrokenoelsmoreite2W2O6(H2O)Iso. m3m(4/m32/m) : Fd3m
4.DH.15'Hydroxynatromicrolite'(Na,Bi3+,◻)2Ta2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Hydroplumboelsmoreite(Pb,◻)(W,Fe3+)2O6 · H2OIso. m3m(4/m32/m) : Fd3m
4.DH.15Hydropyrochlore(H2O,◻)2Nb2(O,OH)6(H2O)Iso. m3m(4/m32/m) : Fd3m
4.DH.15'Unnamed (Sb-analogue of Hydroxymanganopyrochlor)'(Mn,Ca,Y)2(Sb,Ti)2O6(OH)
4.DH.15Hydroxynatropyrochlore(Na,Ca,Ce)2Nb2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Hydrokenopyrochlore(◻,x)2Nb2O6(H2O,Cs)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Oxybismutomicrolite(Bi1.330.67)Σ2Ta2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15Kenomicrolite2Ta2[O4(OH)2]◻Iso. m3m(4/m32/m) : Fd3m
4.DH.15Fluornatromicrolite(Na1.5Bi0.5)Ta2O6FIso. m3m(4/m32/m) : Fd3m
4.DH.15'Oxynatropyrochlore'(Na,Ca,U)2Nb2O6(O,OH)
4.DH.15Hydroxycalciopyrochlore(Ca,Na,U,◻)2(Nb,Ti)2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Fluorcalciopyrochlore(Ca,Na)2(Nb,Ti)2O6FIso.
4.DH.15OxycalciopyrochloreCa2Nb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15'Fluorstrontiopyrochlore'(Sr,◻)2Nb2(O,OH)6F
4.DH.15OxyplumbopyrochlorePb2Nb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15'Fluorplumbopyrochlore'(Pb,Y,Th,U,Na,Ca)2-x(Nb,Ti)2O6FIso.
4.DH.15'Bismutomicrolite (of Hogarth 1977)'Iso. m3m(4/m32/m) : Fd3m
4.DH.15'Bismutopyrochlore (of Chukanov et al.)'(Bi,Ca,U,Pb)2-xNb2(O,OH)6(OH)Amor.
4.DH.15'Kenoplumbopyrochlore'(Pb,◻)Nb2O6(◻,O)
4.DH.15Hydroxyplumbopyrochlore (Pb1.50.5)Nb2O6(OH)Iso. m3m(4/m32/m) : Fd3m
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.15HydroxycalciomicroliteCa1.5Ta2O6(OH)Iso. 432 : P4232
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)Iso. m3m(4/m32/m) : Fd3m
4.DH.15'Oxycalciobetafite'Ca2(Ti,Nb)2O6O
4.DH.15'Oxyuranobetafite'(U,Ca,◻)2(Ti,Nb)2O6O
4.DH.15Fluorcalciomicrolite(Ca,Na)2(Ta,Nb)2O6FIso. m3m(4/m32/m) : Fd3m
4.DH.15OxycalciomicroliteCa2Ta2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15OxystannomicroliteSn2Ta2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15Kenoplumbomicrolite(Pb,◻)2Ta2O6(◻,OH,O)Iso.
4.DH.15Oxynatromicrolite(Na,Ca,U)2(Ta,Nb)2O6(O,F)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Oxystibiomicrolite(Sb3+,Ca)2Ta2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.15'Hydromicrolite'(H2O,◻)2Ta2(O,OH)6(H2O)
4.DH.15'Plumbomicrolite (of Hogarth 1977)'
4.DH.15Hydrokenomicrolite(◻,H2O)2Ta2(O,OH)6(H2O)Iso. m3m(4/m32/m)
4.DH.15Hydroxykenoelsmoreite(◻,Pb)2(W,Fe3+,Al)2(O,OH)6(OH)Trig. 3 : R3
4.DH.15 va'Yttromicrolite (of Hogarth)'(Ca,Y3+,U,Na)2-x(Ta,Nb,Ti,Fe3+)2O7Iso. m3m(4/m32/m) : Fd3m
4.DH.15Hydroxykenopyrochlore(◻,Ce,Ba)2(Nb,Ti)2O6(OH,F)Iso. m3m(4/m32/m) : Fd3m
4.DH.15Hydroxymanganopyrochlore(Mn2+,Th,Na,Ca,REE)2(Nb,Ti)2O6(OH) Iso. m3(2/m3)
4.DH.20'Cuproroméite'Cu2Sb2(O,OH)7Iso.
4.DH.20Hydroxycalcioroméite(Ca,Sb3+)2(Sb5+,Ti)2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.20BindheimitePb2Sb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.20Hydroxyferroroméite(Fe2+1.50.5)Sb5+2O6(OH)Iso. m3m(4/m32/m) : Fd3m
4.DH.20Fluorcalcioroméite(Ca,Na,◻)2Sb5+2(O,OH)6FIso. m3m(4/m32/m) : Fd3m
4.DH.20OxycalcioroméiteCa2Sb2O6OIso. m3m(4/m32/m) : Fd3m
4.DH.20StetefeldtiteAg2Sb2(O,OH)7Iso.
4.DH.20StibiconiteSb3+Sb5+2O6(OH) Iso. m3m(4/m32/m)
4.DH.20MonimolitePb2Sb5+2O7Iso. m3m(4/m32/m)
4.DH.25RosiaitePbSb5+2O6Trig. 3m(32/m) : P31m
4.DH.30Stefanweissite(Ca,REE)2Zr2(Nb,Ti)(Ti,Nb)2Fe2+O14Orth. mmm(2/m2/m2/m) : Cmca
4.DH.30ZirconoliteCaZrTi2O7Orth.
4.DH.30Laachite(Ca,Mn)2Zr2Nb2TiFeO14Mon. 2/m : B2/b
4.DH.30Nöggerathite-(Ce)(Ce,Ca)2Zr2(Nb,Ti)(Ti,Nb)2Fe2+O14Orth. mmm(2/m2/m2/m) : Cmca
4.DH.35LiandratiteU(Nb,Ta)2O8Trig. 3m(32/m) : P31m
4.DH.35PetscheckiteUFe(Nb,Ta)2O8Hex.
4.DH.40IngersoniteCa3Mn2+Sb5+4O14Trig. 32 : P3121
4.DH.45PittongiteNa0.22(W,Fe3+)(O,OH)3 · 0.44H2OHex. 6m2 : P6m2
4.DH.50TazzoliiteBa4-xNaxTi2Nb3SiO17[PO2(OH)2]x(OH)(1-2x) Orth. mmm(2/m2/m2/m) : Fmmm

Fluorescence of HydroxykenomicroliteHide

Orange under long wave ultraviolet light

Other InformationHide

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 HydroxykenomicroliteHide

References for HydroxykenomicroliteHide

Localities for HydroxykenomicroliteHide

Showing 9 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.
Argentina
 
  • Córdoba Province
    • Calamuchita Department
      • Río de Los Sauces District
Demartis et al. (2014)
Australia
 
  • Western Australia
    • Yilgarn shire
      • Mount Holland pegmatite field
Nickel et al. (1985) +1 other reference
Canada
 
  • Manitoba
    • Lac-du-Bonnet area
      • Bernic Lake
153-155. +2 other references
    • Red Cross Lake
Černý et al. (2012)
Czech Republic
 
  • Vysočina Region
    • Žďár nad Sázavou District
Novák et al. (1999)
Madagascar
 
  • Amoron'i Mania
    • Ambositra District
      • Sahatsiho Ambohimanjaka
        • Manandona Valley
C. Stefano photo & Specimen -obtained ...
Russia
 
  • Murmansk Oblast
    • Kovdorsky District
Ivanyuk et al. (2018)
    • Voron'i Tundry
Voloshin et al. (1981) +2 other references
Sweden
 
  • Stockholm County
    • Haninge
      • Utö
        • Utö Mines
Uher et al. (2008) +1 other reference
 
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