Basalt 1 surface
Mineral group	abundance	std.dev
Feldspar	32		5
Pyroxene	26		5
Olivine		6		2
High-silica	20		4
Other		17		3

Basalt 2 surface
Mineral group	abundance	std.dev
Feldspar       33		4
Pyroxene       29		5
Olivine	       9		3
High-silica    15		5
Other	       13		2