Latite - a silica undersaturated form of andesite Lherzolite - an ultramafic rock, essentially a peridotite Monzogranite - a silica undersaturated granite with <5% normative quartz Monzonite - a plutonic rock with <5% normative quartz Nepheline syenite - a silica undersaturated plutonic rock with nepheline replacing orthoclase Nephelinite - a silica undersaturated plutonic rock with >90% nepheline Norite - a hypersthene bearing gabbro Obsidian - a type of volcanic glass
