Collection place
- Contra Costa County, California9 objects
- El Sobrante, Contra Costa County, California9 objects
- NV-Wa-203, Surprise Valley, Washoe County9 objects
- Unincorporated western Contra Costa County, California9 objects
- CA-Mod-204, Modoc County, California8 objects
- CA-Mod-243, Modoc County, California6 objects
- NV-Wa-212, Washoe County, Nevada6 objects
- Dunes south of Lower Lake, Modoc County, California5 objects
- NV-Wa-210, Washoe County, Nevada5 objects
- Snake Lake Basin (north slope), Modoc County, California4 objects
- NV-Wa-207, Washoe County, Nevada3 objects
- CA-Las-200, Surprise Valley, Lassen County2 objects
- CA-Mod-238, Modoc County, California2 objects
- NV-Wa-201, Washoe County, Nevada2 objects
- NV-Wa-202, Surprise Valley, Washoe County2 objects
- NV-Wa-213, Washoe County, Nevada2 objects
- South Shore Flats, Lower Lake, Modoc County2 objects
- 2 miles west of Placeritas, Pershing County, Nevada1 objects
- Alameda County, California1 objects
- Box Elder County, Northern Utah, Utah1 objects