Progress in Earth and Planetary Science

Table 2 Average compositions of olivine, pyroxene and ilmenite in the silicic clast

From: Formation of ferroan dacite by lunar silicic volcanism recorded in a meteorite from the Moon

	Olivine		Pyroxene		Ilmenite
n	4		10		2
wt%	mean	s.d.	mean	s.d.	mean	s.d.
SiO₂	30.53	0.27	46.48	0.71	0.06	0.04
TiO₂	0.06	0.02	0.99	0.28	51.29	0.23
Al₂O₃	<0.03		1.32	0.37	0.06	0.02
Cr₂O₃	<0.04		<0.04		<0.04
FeO	68.91	0.58	32.87	2.16	47.32	0.70
MnO	0.81	0.11	0.34	0.04	0.43	0.15
MgO	0.15	0.03	0.12	0.06	0.04	0.04
CaO	0.63	0.11	18.54	1.75	0.07	0.02
Na₂O	0.05	0.02	0.04	0.02	<0.02
K₂O	<0.01		<0.01		0.01	0.00
P₂O₅	0.06	0.03	<0.03		<0.03
BaO	na		0.07	0.04	na
Total	101.2		100.8		99.3
at. per oxy at.	4		6		3
Si	1.013	0.006	1.927	0.025	0.002	0.001
Ti	0.001	0.001	0.031	0.009	0.985	0.001
Al	b.d.		0.065	0.018	0.002	0.001
Cr	b.d.		b.d.		b.d.
Fe	1.912	0.015	1.140	0.077	1.011	0.010
Mn	0.023	0.003	0.012	0.001	0.009	0.003
Mg	0.007	0.001	0.008	0.003	0.002	0.002
Ca	0.022	0.004	0.823	0.076	0.002	0.000
Na	0.004	0.001	0.003	0.002	b.d.
K	b.d.		b.d.		0.000	0.000
P	0.002	0.001	b.d.		b.d.
Ba	na		0.001	0.001	na	na
total	2.984		4.010		2.013
Fe#	99.8		99.3		99.8
Wo			41.8
En			0.4
Fs			57.8
Ti#			99.9
Ti/Al			0.48

Note: Our values in “s.d.” column are the standard deviations (1σ) of the individual mineral compositions and reflect the compositional variation of each mineral in the silicic clast. The word of “n” means number of analyses, “b.d.” means below the detection limit, “n.a.” means no analysis

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