Uranpyrochlore (of Hogarth 1977)
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|System:||Isometric||Colour:||Red, Red-brown, ...|
|Lustre:||Adamantine, Resinous||Hardness:||4 - 5|
|Name:||The name reflects its uranium content and similarity to pyrochlore.|
Pyrochlore Group. Pyrochlore Subgroup. The uranium analogue of the other members of the Pyrochlore Subgroup.
Uranpyrochlore was discredited by Atencio et al. (2010). The samples named as uranpyrochlore in previous litterature are not fullfilling the conditions according to the new nomenclature of the pyrochlore supergroup to be name as a uranpyrochlore
Classification of Uranpyrochlore (of Hogarth 1977)
|IMA status:||Discredited 2010|
|Strunz 8th edition ID:||4/C.17-90|
|Nickel-Strunz 10th (pending) edition ID:||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
|Dana 8th edition ID:||220.127.116.11|
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
2 : A2B2O6(O,OH,F)
|Hey's CIM Ref.:||18.4.1|
18 : Niobates and Tantalates
4 : Niobates and tantalates containing both U and rare earths
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Type Occurrence of Uranpyrochlore (of Hogarth 1977)
|Type Locality:||Mitchell Co., North Carolina, USA|
|Year of Discovery:||1877|
Physical Properties of Uranpyrochlore (of Hogarth 1977)
|Colour:||Red, Red-brown, chocolate-brown to black, amber-yellow|
|Hardness (Mohs):||4 - 5|
Crystallography of Uranpyrochlore (of Hogarth 1977)
|Cell Parameters:||a = 10.44Å|
|Unit Cell Volume:||V 1,137.89 Å³ (Calculated from Unit Cell)|
Optical Data of Uranpyrochlore (of Hogarth 1977)
Chemical Properties of Uranpyrochlore (of Hogarth 1977)
|Simplified for copy/paste:||(U,Ca,Ce)2(Nb,Ta)2O6(OH,F)|
|Essential elements:||H, Nb, O, U|
|All elements listed in formula:||Ca, Ce, F, H, Nb, O, Ta, U|
Relationship of Uranpyrochlore (of Hogarth 1977) to other Species
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Uranpyrochlore (of Hogarth 1977)
|Health Warning:||No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.|
References for Uranpyrochlore (of Hogarth 1977)
Smith (1877): American Journal of Science. 13: 365.
Allen (1877): American Journal of Science. 14: 128.
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 748.
Hogarth, D. D. (1977): Classification and nomenclature of the pyrochlore group. American Mineralogist. 62, 403-410.
Mineralogical Magazine (1989): 53: 257.
Atencio D., Andrade M.B., Christy A.G., Giere R., Kartashov P.M. (2010): The pyrochlore supergroup of minerals: nomenclature. Canadian Mineralogist, 48, 569-594
Internet Links for Uranpyrochlore (of Hogarth 1977)
Localities for Uranpyrochlore (of Hogarth 1977)
The 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.
(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.