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Kenoplumbomicrolite

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Formula:
(Pb,◻)2Ta2O6(◻,OH,O)
Crystal System:
Isometric
Name:
Named according to the pyrochlore supergroup nomenclature (Atencio et al. 2010). Keno is Greek for empty, for the vacant ionic position, plumbo is derived from the Latin for lead, and the microlite part of the name is for the relationship to that mineral group.
Orginally published as a possible new species; published structure determination ( Atencio et al. 2010, Christy et al. 2013). Approved by IMA as a valid, new species in 2016.


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Classification of KenoplumbomicroliteHide

Approved
Approval Year:
2016

Chemical Properties of KenoplumbomicroliteHide

Formula:
(Pb,◻)2Ta2O6(◻,OH,O)
IMA Formula:
(Pb,◻)2Ta2O6[◻,(OH),O]

Crystallography of KenoplumbomicroliteHide

Crystal System:
Isometric
Cell Parameters:
a = 10.571(1) Å
Unit Cell V:
1,181.27 ų (Calculated from Unit Cell)
Comment:
Spacegroup: Fd-3m

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.050(100)
2.641(42)
2.425(9)
2.033(6)
1.869(26)
1.595(23)
1.527(9)

Type Occurrence of KenoplumbomicroliteHide

Place of Conservation of Type Material:
Mineralogical collections of the Museu de Geociências, Instituto de Geociências, Universidade de São Paulo, Rua do Lago 562, 05508–080 São Paulo, Brazil (registration number DR980)

Synonyms of KenoplumbomicroliteHide

Relationship of Kenoplumbomicrolite to other SpeciesHide

Other Members of this group:
Fluorcalciomicrolite(Ca,Na)2(Ta,Nb)2O6FIso. m3m (4/m 3 2/m) : Fd3m
Fluornatromicrolite(Na1.5Bi0.5)Ta2O6FIso. m3m (4/m 3 2/m) : Fd3m
Hydrokenomicrolite(◻,H2O)2Ta2(O,OH)6(H2O)Iso. m3m (4/m 3 2/m)
Hydromicrolite(H2O,◻)2Ta2(O,OH)6(H2O)
HydroxycalciomicroliteCa1.5Ta2O6(OH)Iso. 4 3 2 : P42 3 2
Hydroxykenomicrolite(◻,Na,Sb3+)2Ta2O6(OH)Iso.
Hydroxynatromicrolite(Na,Bi3+,◻)2Ta2O6(OH)Iso. m3m (4/m 3 2/m) : Fd3m
OxycalciomicroliteCa2Ta2O6O
OxystannomicroliteSn2Ta2O6O
Oxystibiomicrolite(Sb3+,Ca)2Ta2O6O
Yttromicrolite (of Hogarth)(Ca,Y3+,U,Na)2-x(Ta,Nb,Ti,Fe3+)2O7Iso. m3m (4/m 3 2/m) : Fd3m

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 KenoplumbomicroliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Stepanov, V.I., Bukanov, V.V., Bykova, A.V. [Степанов В.И., Буканов В.В., Быкова А.В.] (1982) Plumbomicrolite from amazonite pegmatite of Ploskaya Mountain - first find in USSR [Плюмбомикролит из амазонитового пегматита горы Плоской - первая находка в СССР]. Dokl. Akad. Nauk SSSR [Докл. Акад. Наук СССР]: 263 (1): 183-185 (in Russian).
Bindi, L., Zoppi, M., Bonazzi P. (2006) Plumbomicrolite from the Ploskaya Mountain, Keivy Massif, Kola Peninsula, Russia: composition and crystal structure. Per. Mineral.: 75(2-3): 51-58.
Atencio, D., Andrade, M.B., Christy, A.G., Gieré, R., Kartashov P.M. (2010) The pyrochlore supergroup of minerals: nomenclature. Canadian Mineralogist: 48: 673-698.
Christy, A.G., Atencio, D. (2013) Clarification of status of species in the pyrochlore supergroup. Mineralogical Magazine: 77: 13-20.
Bindi, L., Atencio, D., Andrade, M.B., Bonazzi, P., Zoppi, M., Stanley, C.J., Kristiansen, R. (2016) Kenoplumbomicrolite, IMA 2015-007a. CNMNC Newsletter No. 33, October 2016, page 1143; Mineralogical Magazine: 80: 1135–1144.
Atencio, D., Andrade, M.B., Bindi, L., Bonazzi, P., Zoppi, M., Stanley, C.J., Kristiansen, R. (2018): Kenoplumbomicrolite, (Pb,□)2Ta2O6[□,(OH),O], a new mineral from Ploskaya, Kola Peninsula, Russia. Mineralogical Magazine, 82 (in press).

Internet Links for KenoplumbomicroliteHide

Localities for KenoplumbomicroliteHide

ⓘ - 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.
Russia (TL)
 
  • Murmansk Oblast
    • Keivy Mountains
      • Western Keivy Massif
Stepanov V.I., Bukanov V.V., Bykova A.V. [Степанов В.И., Буканов В.В., Быкова А.В.] (1982): Plumbomicrolite from amazonite pegmatite of Ploskaya Mountain - first find in USSR [Плюмбомикролит из амазонитового пегматита горы Плоской - первая находка в СССР]. Dokl. Akad. Nauk SSSR [Докл. Акад. Наук СССР], 263, 1, 183-185 (in Russian); Bindi L., Zoppi M., Bonazzi P. (2006): Plumbomicrolite from the Ploskaya Mountain, Keivy Massif, Kola Peninsula, Russia: composition and crystal structure. Per. Mineral., 75, 2-3, 51-58; Atencio D., Andrade M.B., Christy A.G., Gieré R., Kartashov P.M. (2010): The pyrochlore supergroup of minerals: nomenclature. Can. Mineral., 48, 673-698.
Mineral and/or Locality  
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