Both major phases contain diorite inclusions that are interpreted as co-mingled melts.

Exposures are typically gray to pink, medium-to-coarse grained, monzogranite.

The average modal composition is 28% quartz, 25% potassium feldspar, 38% plagioclase, 8% biotite, and 1% accessory minerals, including magnetite, titanite, zircon, hornblende, apatite, and muscovite.

Pluton emplacement involving heating to ~650°C at pressures of 2-3 kbars, corresponding to a depth of 7-10 km.

[1] The pluton is interpreted as having been emplaced syntectonically at middle crustal depth during the Picuris orogeny.