Slope gradients range from 5 to 40 percent. The soils formed in material weathered residually from underlying granite. The mean annual precipitation is 15 inches with equal amounts of precipitation throughout the year. These are the competing Lucky soils and the Parlin soils. These soils are used as native pastureland, and for recreational purposes.
Native vegetation is mainly big sagebrush, Arizona fescue, western wheatgrass, and bluegrass.
The series is moderately extensive. Diagnostic features include a mollic epipedon from 0 to 10 inches, an argillic horizon from 10 to 22 inches, and a lithic contact at 26 inches.