Intrusive rocks (Neoproterozoic).

Syenite and diorite of the Acorn Butte, Ramey Ridge, and Rush Creek stocks along Big Creek northeast of McCall (665-650 Ma), and ~726 Ma granitic gneiss in lower part of House Mountain metamorphic complex southeast of Boise. A 695 Ma orthogneiss in the Pioneer Mountains is too small to show at map scale and is included in XAm. (Paleocene to Neoproterozoic Sedimentary and Igneous Rocks of the Cordilleran System).
State Idaho
Name Intrusive rocks (Neoproterozoic).
Geologic age Neoproterozoic
Lithologic constituents
Major
Igneous > Plutonic > Syenitic > Syenite (Stock or pipe)
Igneous > Plutonic > Dioritic > Diorite (Stock or pipe)
Minor
Metamorphic > Metaigneous > Orthogneiss~726 Ma granitic gneiss in lower part of House Mountain metamorphic complex southeast of Boise.
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 Elmore - Idaho - Valley