Hydroxyplumbopyrochlore (original) (raw)

A valid IMA mineral species

About HydroxyplumbopyrochloreHide

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Formula:

(Pb1.5◻0.5)Nb2O6(OH)

Also (previously) given as (Pb,Ca)2-x(Nb,Ti,Ta)2O6(OH) (x = ~0.5)

Colour:

pale yellow to pale brown

Specific Gravity:

6.474 (Calculated)

The OH- and Pb-dominant member of the group.

First find was made in 1992 on Khaldzan Buragtag massif, Altai Mts, Hovd Aimag (Khovd Aimag), Mongolia.
Approved in 2020, with the type locality being the Jabal Sayid peralkaline granitic complex, Saudi Arabia.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:43673:3

a37c65c8-051c-4fec-8b55-bea035ff8845

IMA Classification of HydroxyplumbopyrochloreHide

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IMA Formula:

(Pb1.5◻0.5)Nb2O6(OH)

Classification of HydroxyplumbopyrochloreHide

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4.DH.15

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

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of HydroxyplumbopyrochloreHide

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Comment:

"adamantine to transparent"

Colour:

Pale yellow to pale brown

Comment:

Mean microhardness: 463.4 kg/mm2

Density:

6.474 g/cm3 (Calculated)

Optical Data of HydroxyplumbopyrochloreHide

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Chemistry of HydroxyplumbopyrochloreHide

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Mindat Formula:

(Pb1.5◻0.5)Nb2O6(OH)

Also (previously) given as (Pb,Ca)2-x(Nb,Ti,Ta)2O6(OH) (x = ~0.5)

Crystallography of HydroxyplumbopyrochloreHide

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Class (H-M):

m_3_m _(_4/_m_32/m ) - Hexoctahedral

Cell Parameters:

a = 10.558(2) Å

Unit Cell V:

1,176.91 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of HydroxyplumbopyrochloreHide

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General Appearance of Type Material:

pseudomorphoses after unknown tabular PbNb-mineral-II in complex pseudomorphoses after tetragonal PbNb-silicate-I; from the abstract: euhedral octahedra, slightly rhombic dodecahedra and cubes, or their combination, with crystal sizes in the 0.01-0.06 mm

Place of Conservation of Type Material:

mineralogical collections of the Geological Museum of China, no. 16 Yangrou Hutong, Xisi, Beijing 100031, People's Republic of China, catalogue number M13239

Geological Setting of Type Material:

pegmatite of alkaline granites

Associated Minerals at Type Locality:

Synonyms of HydroxyplumbopyrochloreHide

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Relationship of Hydroxyplumbopyrochlore to other SpeciesHide

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Other Members of this group:

Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Fluorescence of HydroxyplumbopyrochloreHide

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Other InformationHide

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Notes:

Raman spectroscopy: OH bands present, water bands missing

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 HydroxyplumbopyrochloreHide

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References for HydroxyplumbopyrochloreHide

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Reference List:

Li, T., Li, Z., Fan, G., Fan, H., Zhong, J., Jahdali, N.S., Qin, M., Jehani, A.M., Wang, F., Nahdi, M.M. (2020): Hydroxyplumbopyrochlore, (Pb1.5,□0.5)2Nb2O6(OH), a new member of the pyrochlore group from Jabal Sayid, Saudi Arabia. Mineralogical Magazine: 84(5): 785-790.

Localities for HydroxyplumbopyrochloreHide

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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

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- 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.