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Collection place
- North America585
- The Americas585
- United States584
- California439
- San Francisco Bay Area, California394
- CA-SMa-151 (Phleger Mound), Princeton, San Mateo County385
- Half Moon Bay, San Mateo County, California385
- Princeton, San Mateo County, California385
- San Mateo County, California385
- Nevada144
- Africa95
- Mali95
- Tilemsi Valley, Mali95
- Western Africa95
- Churchill County, Nevada89
- NV-Ch-54, Churchill County, Nevada70
- CA-SJo-42, San Joaquin County, California27
- North Central California27
- Northern California27
- San Joaquin County, California27