Basalt 1 surface
Mineral group	abundance	std.dev
Feldspar	27		9
Pyroxene	23		12
Olivine		0
High-silica	28		9
Other		22		3

Basalt 2 surface
Mineral group	abundance	std.dev
Feldspar       26		7
Pyroxene       31		8
Olivine	       9		5
High-silica    18		6
Other	       16		3