Table 1. Chemical compositions of olivine and ringwoodite lamellae (in wt %).

Oxides	Bulk olivine	Lamellae	Olivine matrix
SiO2	38.04	38.08	38.11
MgO	38.52	37.86	38.53
CaO	0.05	0.06	0.04
Na2O	n.d.	n.d.	n.d.
MnO	0.51	0.45	0.52
FeO	22.24	22.51	21.86
TiO2	0.02	0.02	0.02
Al2O3	n.d.	n.d.	n.d.
Cr2O3	0.05	0.04	0.04
V2O3	n.d.	n.d.	n.d.
Totals	99.44	99.02	99.12

n.d., Not detected.