Uranpyrochlore (of Hogarth 1977) (original) (raw)

About Uranpyrochlore (of Hogarth 1977)Hide

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Formula:

(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)

usually is enriched by Ti, but in lesser quantities then betafites

Colour:

Red, Red-brown, chocolate-brown to black, amber-yellow

Lustre:

Adamantine, Resinous

Name:

The name reflects its uranium content and similarity to pyrochlore (Holmquist P.J., 1896).

A variety of Pyrochlore Group

Uranpyrochlore was previously considered to be the uranium-dominant member of the Pyrochlore group (Hogarth, 1977) but was discredited by Atencio et al. (2010) due to lack of acceptable analyses. The samples named as uranpyrochlore in previous literature are (according to the new nomenclature of the pyrochlore supergroup) U-rich oxynatropyrochlore.

Any new analyses confirming a U-dominant pyrochlore, according to 2010 nomenclature rules, will require a new name such as Oxyuranpyrochlore.

Unique IdentifiersHide

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Mindat ID:

4116 (as Uranpyrochlore (of Hogarth 1977))
3316 (as Pyrochlore Group)

Long-form identifier:

mindat:1:1:4116:0 (as Uranpyrochlore (of Hogarth 1977))
mindat:1:1:3316:5 (as Pyrochlore Group)

1130735c-e90b-4c9b-a7e5-664a00c5877d (as Uranpyrochlore (of Hogarth 1977))
3a54fe93-40ce-4d2b-baa3-52597b88699b (as Pyrochlore Group)

IMA Classification of Uranpyrochlore (of Hogarth 1977)Hide

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Classification of Uranpyrochlore (of Hogarth 1977)Hide

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8.2.1.7

8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
2 : A2B2O6(O,OH,F)

18.4.1

18 : Niobates and Tantalates
4 : Niobates and tantalates containing both U and rare earths

Physical Properties of Uranpyrochlore (of Hogarth 1977)Hide

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Colour:

Red, Red-brown, chocolate-brown to black, amber-yellow

Optical Data of Uranpyrochlore (of Hogarth 1977)Hide

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Chemistry of Uranpyrochlore (of Hogarth 1977)Hide

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Mindat Formula:

(Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)

usually is enriched by Ti, but in lesser quantities then betafites

Crystallography of Uranpyrochlore (of Hogarth 1977)Hide

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Cell Parameters:

a = 10.44 Å

Unit Cell V:

1,137.89 ų (Calculated from Unit Cell)

First Recorded Occurrence of Uranpyrochlore (of Hogarth 1977)Hide

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Synonyms of Uranpyrochlore (of Hogarth 1977)Hide

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Other Language Names for Uranpyrochlore (of Hogarth 1977)Hide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Other InformationHide

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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 Uranpyrochlore (of Hogarth 1977)Hide

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References for Uranpyrochlore (of Hogarth 1977)Hide

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Reference List:

Atencio, D., Andrade, M. B., Christy, A. G., Giere, R., Kartashov, P. M. (2010) The pyrochlore supergroup of minerals: nomenclature. The Canadian Mineralogist, 48 (3) 673-698 doi:10.3749/canmin.48.3.673

Localities for Uranpyrochlore (of Hogarth 1977)Hide

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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.