Location Notes: Big Sand Springs Valley, along U.S. Highway 6, 8 miles southwest of Blackrock Summit, 2.2 miles SE of the turnoff to Lunar Crater; in a "borrow pit."
Location Notes: wash of canyon below Rose Spring, Cedar Pass area, so. Kawich Range (ca 1 mi north of old Route 25 from Kawich Valley to Cactus Flat); U.S. Atomic Energy Commission's Nevada test site and vicinity.
Location Notes: Sunflower Flat, south side of U.S. Forest Service Road 930, 0.8 mile east of U.S. Forest Service Road 931 (McDonald Creek Road), 1.4 air miles east-southwest of Point of Rock and approximately 11 air miles southeast of Mountain City.
Location Notes: large playa southeast of the junction of Nevada Highway 16 and U.S. Highway 95 along a dirt road to and east of Ash Meadows., Collector: James L. Reveal, M. Eileen Matthews
Location Notes: U.S. Atomic Energy Commission's Nevada test site and vicinity; So. Belted Range, no. end of Rainier Mesa at head of the Aquaduct, 0.5 mi no. of Ranier Mesa Rd.