European Geosciences Union General Assembly 2015 - Garnet Classification

Cr2O3- Cao garnet classification • EUROPEAN GEOSCIENCES UN General Assembly The majority of garnets are consistent with the lherzolite garnet field (G9) [Grutter et al., 2004] by Cr2O3 and CaO concentrations; rarely with harzburgitic (G10) and wehrlitic (G12) garnet fields. 12 Cr₂O3 Gar3 Garl 2015 CC Ο BY 200μm 8 Gar1 Gar1 Gar2 G10 harzburgitic garnets Gar2 Z00m 0008 106/664.5 GO G9 lherzolitic garnets G12 wehrlitic garnets Gar1 Gar2 G1 G5 low-Cr megacrysts Megacrysts G4 0 unclassified category pyroxenitic garnets 0 2 4 CaO 6 8 [email protected] Gar2 1mm 0005 100μm 0046 634-1 G3 eclogitic garnets 10 G-classification by Grutter et al., 2004 7

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