Quartz diorite.

Primarily quartz diorite, with subordinate diorite, gabbro, granite, and amphibolite; largely undeformed except near eastern part of Blue Mountains island-arc complex; wide age range (160-90 Ma). (Mesozoic-Paleozoic Rocks of the Blue Mountains Island-Arc Complex).
State Idaho
Name Quartz diorite.
Geologic age Cretaceous and Jurassic
Lithologic constituents
Major
Igneous > Plutonic > Dioritic > Quartz-diorite
Minor
Igneous > Plutonic > Dioritic > Diorite
Igneous > Plutonic > Granitic > Granite
Igneous > Plutonic > Gabbroic > Gabbro
Metamorphic > Amphibolite
References

Lewis, Reed S., Link, Paul K., Stanford, Loudon R., and Long, Sean P., Geologic Map of Idaho, 2012, Idaho Geological Survey, Geologic Map 9 (M-9); Scale 1:500,000.

NGMDB product
Counties Adams - Clearwater - Idaho - Lewis - Nez Perce - Washington