Yttropyrochlore (of Hogarth 1977)
A variety of Pyrochlore Group
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About Yttropyrochlore (of Hogarth 1977)
Formula:
(Y,Na,Ca,U)1-2(Nb,Ta,Ti)2(O,OH)7
Original formula as listed in Hey's 3rd Ed.
Colour:
Dark brown to black
Lustre:
Adamantine, Vitreous
Hardness:
4½ - 5½
Name:
The name is derived from its supposed yttrium content and resemblance to pyrochlore-group minerals.
First Recorded Locality:
This page provides mineralogical data about Yttropyrochlore (of Hogarth 1977).
Unique Identifiers
Mindat ID:
4372 (as Yttropyrochlore (of Hogarth 1977))
3316 (as Pyrochlore Group)
3316 (as Pyrochlore Group)
Long-form identifier:
mindat:1:1:4372:0 (as Yttropyrochlore (of Hogarth 1977))
mindat:1:1:3316:5 (as Pyrochlore Group)
mindat:1:1:3316:5 (as Pyrochlore Group)
Similar Names
| Hydropyrochlore | A valid IMA mineral species | (H2O,◻)2Nb2(O,OH)6(H2O) |
IMA Classification of Yttropyrochlore (of Hogarth 1977)
Discredited
Classification of Yttropyrochlore (of Hogarth 1977)
8.2.1.4
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
2 : A2B2O6(O,OH,F)
8 : MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
2 : A2B2O6(O,OH,F)
18.4.9
18 : Niobates and Tantalates
4 : Niobates and tantalates containing both U and rare earths
18 : Niobates and Tantalates
4 : Niobates and tantalates containing both U and rare earths
Physical Properties of Yttropyrochlore (of Hogarth 1977)
Chemistry of Yttropyrochlore (of Hogarth 1977)
Mindat Formula:
(Y,Na,Ca,U)1-2(Nb,Ta,Ti)2(O,OH)7
Original formula as listed in Hey's 3rd Ed.
Original formula as listed in Hey's 3rd Ed.
Element Weights:
Chemical Analysis
Oxide wt%:
| 1 | |
|---|---|
| CaO | 1.2 % |
| MnO | 1.7 % |
| FeO | 3.4 % |
| Sc2O3 | 6.0 % |
| Y2O3 | 12.5 % |
| SnO2 | 2.7 % |
| UO2 | 6.6 % |
| WO3 | 2.2 % |
| Ta2O5 | 37.4 % |
| Nb2O5 | 23.5 % |
| TiO2 | 1.0 % |
| F | 0.2 % |
| Total: | 98.4 % |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | Heftetjern pegmatite, Tørdal, Drangedal, Telemark, Norway | Altered ixiolite. Electron Microprobe analysis. |
First Recorded Occurrence of Yttropyrochlore (of Hogarth 1977)
Synonyms of Yttropyrochlore (of Hogarth 1977)
Other Language Names for Yttropyrochlore (of Hogarth 1977)
German:Yttropyrochlor-(Y)
Other Information
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 Yttropyrochlore (of Hogarth 1977)
mindat.org URL:
https://www.mindat.org/min-4372.html
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References for Yttropyrochlore (of Hogarth 1977)
Localities for Yttropyrochlore (of Hogarth 1977)
Showing 21 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Canada | |
| Ercit et al. (2003) |
| Tindle et al. (1998) |
| Avalon Advanced Materials Inc. | |
| Pavel Kartashov |
Czech Republic | |
| Pauliš P. et al. (Kutna Hora, issue 1) |
| Škoda et al. (2004) |
| Škoda |
Finland | |
| Pavel M. Kartashov analytical data 2019 |
Italy | |
| Ambrino et al. (2009) |
Madagascar | |
| Rakotovao (2009) |
Mongolia | |
| Pavel M. Kartashov (n.d.) |
Norway | |
| Pavel M. Kartashov analytical data (2011) |
| Pršek et al. (2010) |
| Bergstøl et al. (1988) +1 other reference |
Romania | |
| HÎRTOPANU et al. (2014) |
Russia | |
| Konopleva et al. (2008) +1 other reference |
| [World of Stones 95:5-6 +1 other reference |
| Clark (1993) | |
| Pekov (1998) |
South Korea | |
| Pavel M. Kartashov (n.d.) |
Ukraine | |
| Lazarenko E.K. e.a. Mineralogy of ... |
Evans-Lou Mine, Lake Saint-Pierre, Saint-Pierre-de-Wakefield, Val-des-Monts, Les Collines-de-l'Outaouais RCM, Outaouais, Québec, Canada