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Magnesio-riebeckite from
Chalcis, Euboea, Central Greece, Greece


Locality type:Municipality
Classification
Species:Magnesio-riebeckite
Formula:◻Na2(Mg3Fe23+)(Si8O22)(OH)2
Comments:Xypolias et al. (2012) presents a microprobe analysis from blueschist facies amphiboles from teh Styria Nappe. The analysis corresponds to the following formula:

K0.007(Na1.669Ca0.306Mn0.025)2.00(Mg2.356Mn2+0.023Fe2+0.908Fe3+1.184Al0.528)5.00(Si7.95Al0.05)8.00O22(OH)2


F3+ and O content is calculated, and formula normalized in accordance with Andrew J. Locock (2014): An Excel spreadsheet to classify chemical analyses of amphiboles following the IMA 2012 recommendations. Computers & Geosciences, Volume 62, pp 1-11.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Magnesio-riebeckite data
Locality Data:Click here to view Chalcis, Euboea, Central Greece, Greece
Data Identifiers
Mindat Occurrence Record ID:891567
Long-form Identifier:1:3:891567:2
GUID (UUID V4):0
References
Xypolias, P., Iliopoulos, I., Chatzaras, V., Kokkalas, S. (2012) Subduction‐ and exhumation‐related structures in the Cycladic Blueschists: Insights from south Evia Island (Aegean region, Greece). Tectonics, 31 (2). TC2001 doi:10.1029/2011tc002946
 
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