Diopside-Hedenbergite
nα=1.664 - 1.726
nβ=1.672 - 1.730
nγ=1.694 - 1.752
δ=0.031 - 0.024
2V=+(50-62)°
nα=1.670
nβ=1.676
nγ=1.694
δ=0.024 - 0.029
2V=+(42-83)°
Ti-rich augite (Ca,Na)(Mg,Ti,Fe,Al)[Si2O6]:
nα=1.695-1.741
nβ=1.700-1.746
nγ=1.728-1.762
δ=0.024 - 0.029
2V=+(45-58)°; r>>v
Thin section photos:
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