Table 3. X-ray fluorescence (XRF) analysis result of anorthosite and average chemical composition of Apollo 16 lunar soil samples

Oxide (Wt.%)	An#003	An#004	An#005	An#006	An ave	Apollo 16
SiO2	52.45	52.65	52.65	52.61	52.59	45.16
Al2O3	28.11	28.44	27.69	28.47	28.18	27.66
FeO	0	0	0	0	0	4.39
Fe2O3	0.69*	0.37*	0.76*	0.44*	0.57*	0
CaO	11.97	11.91	12.06	11.73	11.92	15.63
MgO	0.39	0.51	0.73	0.46	0.52	5.85
K2O	0.75	0.35	0.39	0.49	0.50	0.13
Na2O	3.85	4.37	4.15	4.26	4.16	0.48
TiO2	0.15	0.11	0.15	0.1	0.13	0.48
MnO	0.02	0.02	0.02	0.02	0.02	0.1
P2O5	0.02	0.02	0.02	0.02	0.02	0.11
Igloss	1.39	1	1.17	1.14	1.18	-
Total	99.79	99.75	99.79	99.74	99.77	99

Fe₂O₃ total.