nsTeam1RO, nsTeam1RW, nsTeam1_talkRO, nsTeam1_talkRW
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'''Basic rocks'' are [[igneous rock]]s that contain between 45% and 55% total [[silica]]. These have less than 10% [[quartz]] and are rich in [[iron|ferro]]-[[magnesium|magnesian]] [[mineral]]s.
'''Basic rocks'' are [[igneous rock]]s that contain between 45% and 55% total [[silica]]. These have less than 10% [[quartz]] and are rich in [[ferro-magnesian mineral]]s.
Pellant, p. 250
Pellant, p. 250