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Allanite-Epidote

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About Allanite-EpidoteHide

Formula:
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
A variety of Epidote

Epidote enriched with REE and Y transitive to allanite-(Ce) or -(Y). Its REE+Y content is below 0.5 apfu. Sometimes such epidotes are selectively enriched in Eu (as at the Tsakhirin Khuduk deposit in Mongolian Altai).


Chemical Properties of Allanite-EpidoteHide

Formula:
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Synonyms of Allanite-EpidoteHide

Varieties of Allanite-EpidoteHide

YttroepidoteYttrium-bearing epidote with a Y+REE content below 0.5 apfu. Transitive to allanite-(Y).
First described from Slyudorudnik, Southern Urals, in 1959.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Allanite-(La)2 photos of Allanite-Epidote associated with Allanite-(La) on mindat.org.
Diopside2 photos of Allanite-Epidote associated with Diopside on mindat.org.
Magnetite2 photos of Allanite-Epidote associated with Magnetite 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 Allanite-EpidoteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Dollase, W.A. (1971), Refinement of the crystal structures of epidote, allanite and hancockite: American Mineralogist: 56: 447-464.

Internet Links for Allanite-EpidoteHide

Localities for Allanite-EpidoteHide

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.
Canada
 
  • Ontario
    • Nipissing District
      • Murchison Township
[var: Yttroepidote] The Canadian Mineralogist Vol. 40, pp. 1411-1419 (2002) The Mess That is "Allanite" T. Scott Ercit
Finland
 
  • South Ostrobothnia
    • Alavus
[var: Yttroepidote] Pavel Kartashov analytical data, J. Dyer material
India
 
  • Kerala
    • Palghat District
www.dae.gov.in/amd/earv3.htm
Italy
 
  • Piedmont
    • Cuneo Province
      • Po Valley
        • Oncino
http://www.ngu.no/FileArchive/165/2003_055.pdf Geological Survey of Norway / The Alice Wain Memorial West Norway Eclogite Field Symposium / Abstract Volume p. 37.
Mongolia
 
  • Hovd Aimag (Khovd Aimag)
    • Altai Mts
      • Khaldzan Buragtag Massif
        • Mount Ulyn Khuren
Kartashov P.M., Voloshin A.V., Pakhomovskii, Ya.A. (1993): On the zonal crystaline gadolinite from the alkaline granite pegmatites of Haldzan Buragtag (Mongolian Altai). - Zapiski VMO, N3, 65-79.
Pavel M. Kartashov data
Norway
 
  • Telemark
    • Bamble
      • Skogstad
[var: Yttroepidote] Larsen, A.O., Škoda, R., Åsheim, A. (2016): Yttrian epidote and allanite-(Y) from a granite pegmatite in Bamble, Telemark, Norway. Norsk mineralsymposium 2016, 33-38.
Russia
 
  • Chelyabinsk Oblast
    • Kyshtym
[var: Yttroepidote] Mineev D.A. (1959) REE-epidote from pegmatites of Middle Ural, - Doklady AN SSSR, v. 127, №4.
  • Krasnoyarsk Krai
    • Severo-Yeniseysky District
Rundqvist, D.V & Gillen C. eds (1997), Precambrian Ore Deposits of the East European and Siberian Cratons, Developments in Economic Geology 30
USA
 
  • Washington
    • Grant Co.
      • Coulee City
Collected by Doug Schonewald, Collection of Alex Earl
Mineral and/or Locality  
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