Habit; Habitat: Steep, open south slope above road; Location: Illinois River Road, outcrops and talus above road; Substrate: Rock, noncalcareous (greenstone); Elevation: 466 meters.
Habit; Habitat: Partly forested; Location: Peridotite outcrop near Squaw Creek, 1 km N NW of Deer Creek Center, Siskiyou Field Institute; Substrate: Rock, peridotite; Elevation: 484 meters; Notes: Plate 327: gyrophoric.