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Hydroxyplumbopyrochlore

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Formula:
(Pb,Ca)2-x(Nb,Ti,Ta)2O6(OH)
x= ~0.5 f.u.
Colour:
yellow
Lustre:
Resinous
First find was made in 1992 on Khaldzan Buragtag massif, Altai Mts, Hovd Aimag (Khovd Aimag), Mongolia.


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Physical Properties of HydroxyplumbopyrochloreHide

Resinous
Transparency:
Translucent
Colour:
yellow
Streak:
white
Cleavage:
None Observed
Fracture:
Conchoidal

Optical Data of HydroxyplumbopyrochloreHide

Type:
Isotropic

Chemical Properties of HydroxyplumbopyrochloreHide

Formula:
(Pb,Ca)2-x(Nb,Ti,Ta)2O6(OH)

x= ~0.5 f.u.

First Recorded Occurrence of HydroxyplumbopyrochloreHide

General Appearance of First Recorded Material:
pseudomorphoses after unknown tabular PbNb-mineral-II in complex pseudomorphoses after tetragonal PbNb-silicate-I
Geological Setting of First Recorded Material:
pegmatite of alkaline granites

Relationship of Hydroxyplumbopyrochlore 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
Hydrokenopyrochlore2Nb2O4(OH)2(H2O)Iso. m3m (4/m 3 2/m) : Fd3m
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
Hydroxymanganopyrochlore(Mn2+,Th,Na,Ca,REE)2(Nb,Ti)2O6(OH) Iso. m3 (2/m 3)
Kenoplumbopyrochlore(Pb,□)Nb2O6(□,O)
OxycalciopyrochloreCa2Nb2O6OIso. m3m (4/m 3 2/m) : Fd3m
Oxynatropyrochlore(Na,Ca,U)2Nb2O6(O,OH)
OxyplumbopyrochlorePb2Nb2O6O
Oxyyttropyrochlore-(Y)(Y,◻)2Nb2O6O

Common AssociatesHide

Associated Minerals Based on Photo Data:
Columbite-(Fe)4 photos of Hydroxyplumbopyrochlore associated with Columbite-(Fe) on mindat.org.
Microcline2 photos of Hydroxyplumbopyrochlore associated with Microcline on mindat.org.
Quartz1 photo of Hydroxyplumbopyrochlore associated with Quartz on mindat.org.

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 HydroxyplumbopyrochloreHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
- Kartashov P.M., Voloshin A.V., Pakhomovsky Ya.A. (1992) On plumbopyrochlore from Western Mongólia. Doklady Akademii Nauk SSSR, 322, p. 1137-1140. (in Rus.).

Internet Links for HydroxyplumbopyrochloreHide

Localities for HydroxyplumbopyrochloreHide

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

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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.
Mongolia (FRL)
 
  • Hovd Aimag (Khovd Aimag)
    • Altai Mts
Kartashov P.M., Voloshin A.V., Pakhomovsky Ya.A. (1992) On plumbopyrochlore from Western Mongólia. Doklady Akademii Nauk SSSR, 322, p. 1137-1140. (in Rus.).
Mineral and/or Locality  
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