012x012 Serpentinite (Sesquipedalia) Challenge GC4QKGW
Marin county, CA, United States
11.3 Points
115 finds in 13 years
Next find points: 11.2
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First available: October 20, 2013
Last Update: October 24, 2026 9:41 AM
Last Full Sync: September 16, 2026 7:34 AM
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Statistics last updated Thursday, 29 October 2026 04:30:50 Eastern Daylight Time
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