Earth, Planets and Space

Table 1 Average mineral compositions (wt.%) in the PA1 and PA5 clasts

From: Implications for the origins of pure anorthosites found in the feldspathic lunar meteorites, Dhofar 489 group

Oxide	Minerals in the PA1 clast						Minerals in the PA5 clast
	Plagioclase		Olivine		Orthopyroxene		Plagioclase		Olivine
	No. = 6		No. = 2		No. = 3		No. = 5		No. = 7
	Con.	SD	Con.	SD	Con.	SD	Con.	SD	Con.	SD
SiO₂	43.89	0.51	36.72	0.39	50.02	0.92	44.85	0.17	38.20	1.14
TiO₂	b.d.		0.14	0.04	0.84	0.24	b.d.		b.d.
Al₂O₃	34.65	0.27	0.61	0.02	1.76	0.35	35.13	0.15	0.67	0.62
Cr₂O₃	b.d.		0.06	0.00	0.34	0.04	b.d.		0.06	0.02
FeO	0.17	0.03	31.10	0.65	21.69	1.48	0.16	0.02	18.89	3.11
MnO	0.05	0.02	0.47	0.07	0.47	0.02	b.d.		0.21	0.05
MgO	0.15	0.03	28.20	0.89	21.47	2.65	0.21	0.04	40.31	3.12
CaO	19.14	0.24	0.69	0.09	2.30	0.65	19.05	0.08	0.29	0.21
Na₂O	0.46	0.04	0.04	0.01	0.07	0.02	0.49	0.03	0.10	0.05
K₂O	b.d.		b.d.		b.d.		0.02	0.00	b.d.
P₂O₅	0.15	0.01	b.d.		b.d.		0.17	0.00	b.d.
V₂O₃	b.d.		b.d.		0.05	0.01	b.d.		b.d.
Total	98.66		98.03		99.01		100.08		98.73
Mg#	63		61.8		63.8		70		79.1
An	95.8		-		-		95.5		-
Ab	4.2		-		-		4.4		-
Or	-		-		-		0.1		-
Cation
Ca	2.883		0.122		0.382		2.823		0.048
Mg	0.034		7.007		4.836		0.044		9.356
Fe	0.020		4.335		2.747		0.019		2.472

b.d., below detection limit; No., number of analyzed grains; Con., concentration; SD, standard deviation indicates standard deviation variation (1σ) of the individual mineral compositions and reflects the compositional variation of each mineral in each clast.

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