Mica schist, quartzite, and calc-silcicate rock; Proterozoic high-grade metasedimentary rocks; trans-Idaho metamorphic province (IDZXmhc;0)

State	Idaho
Name	Mica schist, quartzite, and calc-silcicate rock; Proterozoic high-grade metasedimentary rocks; trans-Idaho metamorphic province
Geologic age	Proterozoic
Original map label	PC3; PC
Comments	ZXmhc includes high-grade metasedimentary rocks, alternatively mapped as Precambrian calc-silicate-bearing high-grade metamorphic rocks (PC3 of ID001), meta-Wallace (ID110, 133), or Syringa metamorphic series (ID185). Detrital zircons from various Syringa-series samples indicate Belt-age, pre-Belt, and post-Belt components (Reed S. Lewis, oral commun., 2004). Syringa lithologies include mica schist (+/- sillimanite +/- kyanite, +/- garnet), coarsely recrystallized quartzite, diopside quartzite, and hornblende gneiss (+/- garnet and epidote).
Primary rock type	mica schist
Secondary rock type	quartzite
Other rock types	calc-silicate rock
Lithologic constituents	Major Metamorphic > Schist (Amphibolite)mica schist +/- sillimanite, kyanite, garnet Minor Metamorphic > Gneiss (Amphibolite)calc-silicate gneiss +/- diopside, amphibole, garnet, epidote Metamorphic > Quartzite (Amphibolite)coarsely recrystallized quartzite Incidental Metamorphic > Amphibolite (Amphibolite)amphibolite in meta-Wallace
Map references	Bond, J.G., Kauffman, J.D., Miller, D.A., and Venkatakrishnan, Ramesh, 1978, Geologic map of Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, with contributions from U.S. Geological Survey, scale 1:500,000.
Unit references	Bond, J.G., Kauffman, J.D., Miller, D.A., and Venkatakrishnan, Ramesh, 1978, Geologic map of Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, with contributions from U.S. Geological Survey, scale 1:500,000. Rember, W.C. and Bennett, E.H., 1979, Geologic map of the Pullman quadrangle, Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, Geologic Map Series, Pullman 2o Quadrangle, scale 1:250,000. Rember, W.C., and Bennett, E.H., 1979, Geologic map of the Hamilton quadrangle, Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, Geologic Map Series, Hamilton 2o quadrangle, 1:250,000 scale. Lewis, R.S., 2003, Unpublished report on IGS digital geologic maps in preparation, north-central Idaho: Moscow, Idaho, Idaho Geological Survey, 1:100,000 scale. Lewis, R.S., Burmester, R.F., and Bennett, E.H., 1997, Metasedimentary rocks between the Bitterroot and Atlanta lobes of the Idaho batholith and their relationship to the Belt Supergroup: in Berg, R.B., ed., Belt Symposium III, 1993: Montana Bureau of Mines and Geology, Special Publication 112, p. 130-144.
Geographic coverage	Benewah - Clearwater - Latah - Nez Perce - Shoshone