Browse Items (1651 total)

fine grained, light gray

medium grained, dark grey, biotite-hornblende granodiorite

medium grained, light gray

coarse grained, medium gray

coarse grained, light gray

coarse grained, light gray biotite-hornblende

porphyritic, light gray, fine grained

fine grained, dark gray, porphyritic

coarse grained, light gray, biotite-hornblende

fine grained with pinkish tint

Quartz Monzonite from the Kinsman Quartz Monzonite unit. Thin section shows quartz, potassium feldspar, plagioclase, biotite, muscovite, and myrmekitic texture. Hand sample contains quartz, feldspars, and micas.

Quartz Monzonite from the Kinsman Quartz Monzonite unit. Thin section contains lots of plagioclase in addition to biotite and quartz. Hand sample contains feldspars, quartz, and biotite.

Quartz Monzonite from the Kinsman Quartz Monzonite series. The garnets show definite zoning, with some zones up to 1.0mm thick. Thin section is garnet rich and also contains plagioclase, quartz, alkali feldspar, some biotite, and muscovite. Hand…

Leucocratic facies of the Kinsman Quartz Monzonite. Thin section contains plagioclase, bitote, quartz, alkali feldspar, and muscovite. Hand sample shows feldspars, quartz, and biotite. Taken from the same location as NH-7.