Examples of granitoid rocks include granite, quartz monzonite, quartz diorite, syenite, granodiorite, tonalite and trondhjemite. The most common rock types in plutons are granite, granodiorite, tonalite, monzonite, and quartz diorite. In addition to gabbro, the second intrusive suite included nepheline syenite, diorite and monzonite. Paleozoic limestones, shales and sandstones were intruded in the Cretaceous by a quartz monzonite porphyry. The composition ranges from monzonite to quartz syenite. Quartz monzonite porphyry is often associated with copper mineralization in the porphyry copper ore deposits. Around Launceston, igneous rocks were intruded into Cainozoic sediments forming dolerite and monzonite. Ore formation occurred with the intrusion of the Butte quartz monzonite pluton. Quartz monzonite forms many of the cliffs, while the crags are biotite gneiss. The ore deposits are veins in quartz monzonite and quartzite. The fine grained volcanic rock equivalent of quartz monzonite is quartz latite. Stone Mountain in Georgia is a large quartz monzonite monadnock. The Little Diomede island is composed of Cretaceous age granite or quartz monzonite. The large boulders of Joshua Tree National Park in southern California are quartz monzonite. If quartz constitutes greater than 5%, the rock is termed a quartz monzonite.