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Hydrokenopyrochlore

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This page provides mineralogical data about Hydrokenopyrochlore.


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Classification of HydrokenopyrochloreHide

Approved, Pending publication
Approval Year:
2017

Chemical Properties of HydrokenopyrochloreHide

Formula:
2Nb2O4(OH)2(H2O)
IMA Formula:
2Nb2O4(OH)2(H2O)

Crystallography of HydrokenopyrochloreHide

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Fd3m
Setting:
Fd3m
Cell Parameters:
a = 10.4887(8) Å
Unit Cell V:
1,153.89 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.677(w)
3.136(s)
3.006(s)
2.598(w)
2.010(ms)
1.846(s)
1.588(ms)
1.509(m)
Comments:
From Type Description.

Type Occurrence of HydrokenopyrochloreHide

Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Musée cantonal de Géologie, University of Lausanne, Switzerland, catalogue numbers MGL 080141 and 080142, and the Museo di Storia Naturale, Università di Pisa, Italy
Geological Setting of Type Material:
A complex type LCT pegmatite hosted in a metadolomite.

Synonyms of HydrokenopyrochloreHide

Relationship of Hydrokenopyrochlore to other SpeciesHide

Other Members of this group:
Cesiokenopyrochlore□Nb2(O,OH)6Cs1−x (x ∼ 0.20)Iso. m3m (4/m 3 2/m) : Fd3m
Fluorcalciopyrochlore(Ca,Na)2(Nb, Ti)2O6FIso.
FluorhydropyrochloreA possible new species (See discussion in Atencio et al.
Fluorkenopyrochlore(□,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F
Fluornatropyrochlore(Na,Pb,Ca,REE,U)2Nb2O6FIso. m3m (4/m 3 2/m)
Fluorplumbopyrochlore(Pb,Y,Th,U,Na,Ca)2-x(Nb,Ti)2O6FIso.
Fluorstrontiopyrochlore(Sr,□)2Nb2(O,OH)6F
Hydropyrochlore(H2O,□)2Nb2(O,OH)6(H2O)Iso. m3m (4/m 3 2/m) : Fd3m
Hydroxycalciopyrochlore(Ca,Na,U,□)2(Nb,Ti)2O6(OH)Iso. m3m (4/m 3 2/m) : Fd3m
Hydroxykenopyrochlore(□,Ce,Ba)2(Nb,Ti)2O6(OH,F)Iso. m3m (4/m 3 2/m) : Fd3m
Hydroxymanganopyrochlore(Mn2+,Th,Na,Ca,REE)2(Nb,Ti)2O6(OH) Iso. m3 (2/m 3)
Hydroxynatropyrochlore(Na,Сa,Ce)2Nb2O6(OH)Iso. m3m (4/m 3 2/m) : Fd3m
Hydroxyplumbopyrochlore(Pb,Ca)2-x(Nb,Ti,Ta)2O6(OH)
Kenoplumbopyrochlore(Pb,□)Nb2O6(□,O)
OxycalciopyrochloreCa2Nb2O6OIso. m3m (4/m 3 2/m) : Fd3m
Oxynatropyrochlore(Na,Ca,U)2Nb2O6(O,OH)
OxyplumbopyrochlorePb2Nb2O6O
Oxyyttropyrochlore-(Y)(Y,◻)2Nb2O6O
Unnamed (Sb-analogue of Hydroxymanganopyrochlor)(Mn,Ca,Y)2(Sb,Ti)2O6(OH)

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 HydrokenopyrochloreHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Biagioni, C., Gieré, R.,Meisser, N., Nestola, F., Pasero, M., Robyr, M., Roth, P. and Schnyder, C. (2017) Hydrokenopyrochlore, IMA 2017-005. CNMNC Newsletter No. 37, June 2017, page 739; Mineralogical Magazine: 81: 737–742.

Internet Links for HydrokenopyrochloreHide

Localities for HydrokenopyrochloreHide

ⓘ - 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.
Madagascar (TL)
 
  • Fianarantsoa Province
    • Amoron'i Mania Region
      • Ambositra District
        • Sahatsiho-Ambohimanjaka Commune
          • Manandona Valley
Biagioni, C., Gieré, R.,Meisser, N., Nestola, F., Pasero, M., Robyr, M., Roth, P. and Schnyder, C. (2017) Hydrokenopyrochlore, IMA 2017-005. CNMNC Newsletter No. 37, June 2017, page 739; Mineralogical Magazine, 81, 737–742.
Slovakia
 
  • Košice Region
    • Rožňava Co.
      • Dobšiná mining district (Dobschau; Topschau)
Uher P., Bačík P., Števko M., Chládek Š., Fridrichová J. (2018): Elbaite-bearing, Nb-Ta-rich granitic pegmatite from Dobšiná, Gemeric Unit, Eastern Slovakia: the first documented occurrence in the Western Carpathians. Joint 5th Central-European Mineralogical Conference and 7th Mineral Sciences in the Carpathians Conference, Book of Abstracts, 109.
Mineral and/or Locality  
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