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Biotite from
Etyka (Aetyka; Etyka Olovyannya), Zabaykalsky Krai, Russia

Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
References
References:http://www.minsocam.org/MSA/Special/Pig/PIGarticles/Zaraisky.html (Previously published in: Mineral Deposits: Research and Exploration Where do They Meet? Proceedings of the Fourth Biennial SGA Meeting , Turku/Finland/11-13 August 1997 , Heikky Papunen (ed.), A.A. Balkema, Rotterdam, Brookfield, 1997, pp.695-698).
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Etyka (Aetyka; Etyka Olovyannya), Zabaykalsky Krai, Russia
Nearest other occurrences of Biotite
66.7km (41.5 miles) Sherlova Gora (Sherlovaya Gora), Adun-Cholon Range, Nerchinsk Gem mines, Nerchinsk (Nertschinsk), Zabaykalsky Krai, Russia
 
Mineral and/or Locality  
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