Monzogranite, syenogranite, and syenite; Eocene phaneritic to porphro-aphanitic intrusions of the pink monzogranite suite; Challis magmatic belt (IDTeif;0)

State	Idaho
Name	Monzogranite, syenogranite, and syenite; Eocene phaneritic to porphro-aphanitic intrusions of the pink monzogranite suite; Challis magmatic belt
Geologic age	Eocene
Original map label	Tei; Ki?; Kif
Comments	Teif plutons of the Eocene pink monzogranite suite (ID008) are characterized by monotonous color and texture, color index 1-7, oligoclase, highly perthitic K-feldspar, >30 % of quartz (relative to Qtz + Plag + Alk feld), large quartz grains, anhedral biotite, rare hornblende, and rare primary muscovite.
Primary rock type	granite
Secondary rock type	quartz syenite
Other rock types
Lithologic constituents	Major Igneous > Plutonic > Granitic > Granite > Monzogranite (Pluton)monzogranite of Eocene pink granite suite Incidental Igneous > Plutonic > Syenitic > Quartz-syenite (Pluton)quartz syenite of Eocene pink granite suite Igneous > Plutonic > Granitic > Granite > Syenogranite (Pluton)syenogranite of Eocene pink granite suite
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. Lewis, R.S., Burmeister, R.F., Bennett, E.H., and White, D.L., 1990, Preliminary geologic map of the Elk City region, Idaho: Moscow, Idaho, Idaho Geological Survey Technical Report 90-2, scale 1:100,000 with pamphlet, 5 p. [http://www.idahogeology.org/PDF/Technical_Reports_(T)/TR-90-2.pdf] Lewis, R.S., and Kiilsgaard, T.H., 1991, Eocene plutonic rocks in south central Idaho: Journal of Geophysical Research, v. 96, no. B8, p. 13,295-13,311. Fisher, F.S., McIntyre, D.H., and Johnson, K.M., 1992, Geologic map of the Challis 1o x 2o quadrangle, Idaho: U.S. Geological Survey Miscellaneous Investigations Series Map I-1819, scale 1:250,000 with pamphlet, 39 p. [http://pubs.er.usgs.gov/publication/i1819] Evans, K.V. and Green, G.N., 2003, Geologic map of the Salmon National Forest and vicinity, east-central Idaho: U.S. Geological Survey Geological Investigations Series I-2765, scale 1:100,000 with pamphlet, 19 p. [http://pubs.er.usgs.gov/publication/i2765] Rember, W.C. and Bennett, E.H., 1979, Geologic map of the Challis quadrangle, Idaho: Moscow, Idaho, Idaho Bureau of Mines and Geology, Geologic Map Series, Challis 2o quadrangle, scale 1:250,000. Lewis, R.S., Burmester, R.F., Kauffman J.D., and Frost, T.P., 2000, Geologic map of the St. Maries 30 x 60 minute quadrangle, Idaho: Moscow, Idaho, Idaho Geological Survey Geologic Map 28, 1:100,000 scale, pamphlet, 36 p. [http://www.idahogeology.org/PDF/Maps_(M)/Geologic_Maps_(GM)/PDF/GM-28-m.pdf] 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. Bennett, E.H., and Knowles, C.R., 1985, Tertiary plutons and related rocks in central Idaho: in McIntyre, D.H., ed., Symposium on the Geology and Mineral Deposits of the Challis 1o x 2o Quadrangle, Idaho: U.S. Geological Survey Bulletin 1658 A-S, chapter F, p. 81-95. [http://pubs.er.usgs.gov/publication/b1658AS] Lewis, R.S., and Stanford, L.R., 2000, Geologic map compilation of the Hamilton 30 x 60 minute quadrangle, Idaho: Moscow, Idaho, Idaho Geological Survey Technical Report 00-? , 1:100,000 scale. [http://www.idahogeology.org/PDF/Maps_(M)/Geologic_Maps_(GM)/PDF/GM-32-m.pdf]
Geographic coverage	Benewah - Blaine - Boise - Camas - Clearwater - Custer - Elmore - Idaho - Latah - Lemhi - Valley