Metamorphic rocks.

Pend Oreille granodiorite gneiss near Priest River (~2650 Ma); schist, gneiss, and subordinate quartzite along North Fork Clearwater River; Kelly Creek granite gneiss northeast of Pierce (~2670 Ma); orthogneiss in Pioneer Mountains (~2600 Ma and 695 Ma); granite gneiss, granite, schist, and amphibolite of Green Creek complex in Albion Mountains (~2600 Ma); granite gneiss in Beaverhead Mountains east of Leadore (~2450 Ma); and marble, quartzite, schist, and amphibolite of uncertain age near Henrys Lake. (Mesoproterozoic to Archean Basement Rocks).
State Idaho
Name Metamorphic rocks.
Geologic age Paleoproterozoic and Archean
Lithologic constituents
Major
Metamorphic > Amphibolite
Metamorphic > Metaigneous > OrthogneissPend Oreille granodiorite gneiss. Kelly Creek granite gneiss. Orthogneiss in Pioneer Mountains. Granite gneiss of Green Creek complex in Albion Mountains. Granite gneiss in Beaverhead Mountains.
Metamorphic > Schist
Minor
Metamorphic > Metasedimentary > Metacarbonate > Marble
Metamorphic > Metasedimentary > Metaclastic > Quartzite
Igneous > Plutonic > Granitic > Granite
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 Bonner - Cassia - Clearwater - Custer - Fremont - Lemhi - Shoshone