Trondhjemite

Contains biotite and hornblende.
State New Hampshire
Name Trondhjemite
Geologic age Late Ordovician
Lithologic constituents
Major
Igneous > Plutonic > Granitic > Tonalite > Trondhjemite (Pluton)contains biotite and hornblende
Comments Part of the Oliverian Plutonic Suite (Late Ordovician) - Pink, weakly to moderately foliated, locally porphyritic biotite granitoids found in mantled gneiss domes. Mafic varieties contain hornblends. Variably metamorphosed up to amphibolite facies.
References
NGMDB product
Counties Cheshire - Sullivan