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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Biotite from
Everek Hanlari Volcanic Field, Bayburt, Bayburt Province, Turkey


Locality type:Volcanic Field
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Everek Hanlari Volcanic Field, Bayburt, Bayburt Province, Turkey
Data Identifiers
Mindat Occurrence Record ID:1358600
Long-form Identifier:1:3:1358600:5
GUID (UUID V4):0
Nearest other occurrences of Biotite
73.0km (45.4 miles) ⓘUlutaş Cu deposit, Kirazlı, İspir District, Erzurum Province, Turkey
References
Altherr, R., Topuz, G., Siebel, W., Şen, C., Meyer, H. P., Satır, M., & Lahaye, Y. (2008). Geochemical and Sr–Nd–Pb isotopic characteristics of Paleocene plagioleucitites from the eastern Pontides (NE Turkey). Lithos, 105(1-2), 149-161.
Eyuboglu, Y., Chung, S. L., Santosh, M., Dudas, F. O., & Akaryalı, E. (2011). Transition from shoshonitic to adakitic magmatism in the Eastern Pontides, NE Turkey: implications for slab window melting. Gondwana Research, 19(2), 413-429.
 
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