Hydrous origin of the continental cratonic mantle

Earth, Planets and Space

Table 4 Chemical compositions of experimental and residual mineral phases in pyrolite + 8 wt.% H ₂ O

Run no.		SiO₂(wt.%)	TiO₂	Al₂O₃	Cr₂O₃	FeO^*	MgO	CaO	Na₂O	K₂O	Total	Mg#
3.0 GPa
OD1085	Ol	40.3	0.0	0.0	0.1	7.8	50.0	0.1	0.7	0.0	99.1	0.920
OD1085	MgPx	56.1	0.0	1.4	0.9	4.9	35.1	0.3	0.8	0.0	99.6	0.927
4.5 GPa
OD1022	Ol	40.9	0.0	0.0	0.1	8.4	50.0	0.0	0.2	0.0	99.6	0.914
	MgPx	56.9	0.1	0.8	0.3	4.9	35.4	0.4	0.3	0.0	99.0	0.928
	Gt	41.2	0.5	20.4	2.2	7.9	21.9	3.8	0.1	0.0	98.6	0.832
OD1053	Ol	41.2	0.0	0.0	0.1	5.8	50.9	0.0	0.0	0.0	98.1	0.940
OD1053	MgPx	55.6	0.1	1.4	0.8	4.1	35.4	0.3	0.0	0.0	97.5	0.939
OD1050	Ol	41.7	0.14	0.0	0.2	5.1	51.6	0.0	0.1	0.0	98.8	0.948
OD1050	MgPx	58.3	0.0	0.5	0.4	3.2	36.1	0.2	0.1	0.0	99.0	0.952
OD1045	Ol	41.8	0.0	0.0	0.1	4.9	52.2	0.1	0.1	0.0	99.3	0.950
6 GPa
OD1080	Ol	41.54	0.0	0.0	0.0	6.0	52.2	0.0	0.7	0.0	100.5	0.939
	MgPx	57.7	0.0	0.7	0.0	4.2	36.5	0.4	0.8	0.0	100.5	0.940
	Gt	41.6	0.5	17.9	1.3	10.4	21.4	4.9	0.7	0.0	98.6	0.786
	FeTi	2.3	12.9	1.6	2.5	61.4	3.5	0.5	0.3	0.0	85.0
OD1065	MgPx	56.7	0.1	1.0	0.2	3.2	36.8	0.4	0.9	0.0	99.2	0.954
OD1065	Gt	43.5	0.2	19.2	2.4	5.8	26.3	2.0	0.7	0.0	100.0	0.891
OD1079	MgPx	57.8	0.1	0.7	0.3	3.0	36.9	0.2	0.8	0.0	99.9	0.956
8 GPa
OD1086	MgPx	58.6	0.1	0.5	0.3	3.0	37.1	0.3	0.8	0.0	100.6	0.957
OD1086	Gt	45.0	0.2	17.9	2.4	4.9	27.4	1.1	0.6	0.0	99.4	0.910

Ol, olivine; MgPx, Mg-rich orthopyroxene; Gt, garnet; FeTi, Fe- and Ti-bearing hydroxide. FeO*, total iron is listed as FeO.