J. Petrology -- FROST et al. 42 (11): 2033

Frost B.R. et al. (2001): A Geochemical Classification for Granitic Rocks. Journal of Petrology 42, 2033-2048.
Table 1: A geochemical classification scheme for granitoids

Fe-no. or Fe^*: magnesian

MALI: calcic calc-alkalic alkali–calcic alkalic
ASI: metaluminous
peraluminous
metaluminous
peraluminous
metaluminous
peraluminous
metaluminous
peralkaline

Rock types diorite, quartz diorite diorite, monzodiorite, monzonite, syenite monzonite, syenite, granite alkali fsp. syenite, alkali fsp. granite

tonalite granodiorite high K-granite

Occurrences plutons on the outboard portions of Cordilleran batholiths, plutons in island arcs, plagiogranites plutons in the main portion of Cordilleran batholiths plutons inboard from Cordilleran batholiths,
plutons associated with delamination of overthickened crust plutons inboard from Cordilleran batholiths

Examples La Posta pluton (Walawender et al., 1990) Cornucopia stock (Johnson et al., 1997) Tuolumne suite (Bateman & Chappell, 1979) N. Idaho batholith (Hyndman, 1984) Ben Nevis (Haslam, 1968) portions of the Vosges granites (Altherr et al., 2000) Yamato Mtns (Zhao et al., 1995) Shonkin Sag (Nash & Wilkinson, 1970)

Fe-no. or Fe^*: ferroan

MALI: calcic calc-alkalic alkali–calcic alkalic
ASI: metaluminous
peraluminous
metaluminous
peraluminous
metaluminous
peraluminous
metaluminous
peralkaline

Rock types none known none knomn granite two-mica granite ferrodiorite, syenite, granite two-mica granite anorthosite, ferrodiorite, monzonite, granite alkaji gabbro, syenite, alkali granite

Occurrences some A-type plutons, some granophyres in mafic plutons some A-type plutons A-type granites, granophyres associated with mafic dikes and plutons within-plate plutons, plutons in cores of alkalic volcanoes

Examples Bunger Hills (Sheraton et al., 1792) some Lachlan A-type granites (King et al., 1997) Sherman batholith (Frost et al., 1989) St. Vrain, Silver Plume (Anderson & Thomas, 1985) Bjerkreim–Sokndal (Duchesne & Wilmart, 2997) Na series of Pikes Peak (Smith et al., 1999)

Adapted from Journal of Petrology Online

Fe-no. or Fe^*:	magnesian
MALI:	calcic		calc-alkalic		alkali–calcic		alkalic
ASI:	metaluminous	peraluminous	metaluminous	peraluminous	metaluminous	peraluminous	metaluminous	peralkaline
Rock types	diorite, quartz diorite		diorite, monzodiorite,		monzonite, syenite		monzonite, syenite, granite	alkali fsp. syenite, alkali fsp. granite
	tonalite		granodiorite		high K-granite
Occurrences	plutons on the outboard portions of Cordilleran batholiths, plutons in island arcs, plagiogranites		plutons in the main portion of Cordilleran batholiths		plutons inboard from Cordilleran batholiths, plutons associated with delamination of overthickened crust		plutons inboard from Cordilleran batholiths
Examples	La Posta pluton (Walawender et al., 1990)	Cornucopia stock (Johnson et al., 1997)	Tuolumne suite (Bateman & Chappell, 1979)	N. Idaho batholith (Hyndman, 1984)	Ben Nevis (Haslam, 1968)	portions of the Vosges granites (Altherr et al., 2000)	Yamato Mtns (Zhao et al., 1995)	Shonkin Sag (Nash & Wilkinson, 1970)

Fe-no. or Fe^*:	ferroan
MALI:	calcic		calc-alkalic		alkali–calcic		alkalic
ASI:	metaluminous	peraluminous	metaluminous	peraluminous	metaluminous	peraluminous	metaluminous	peralkaline
Rock types	none known	none knomn	granite	two-mica granite	ferrodiorite, syenite, granite	two-mica granite	anorthosite, ferrodiorite, monzonite, granite	alkaji gabbro, syenite, alkali granite
Occurrences			some A-type plutons, some granophyres in mafic plutons	some A-type plutons	A-type granites, granophyres associated with mafic dikes and plutons		within-plate plutons, plutons in cores of alkalic volcanoes
Examples			Bunger Hills (Sheraton et al., 1792)	some Lachlan A-type granites (King et al., 1997)	Sherman batholith (Frost et al., 1989)	St. Vrain, Silver Plume (Anderson & Thomas, 1985)	Bjerkreim–Sokndal (Duchesne & Wilmart, 2997)	Na series of Pikes Peak (Smith et al., 1999)