Ages for Quartz at Fricot Holdings Mine (Fricot Group; Rochester Square Block; Albany; Idaho Construction; Columbus Claim; Oswego Claim; Horseshoe Claim; Philadelphia Claim; Governor Davis Claim; Twentieth Century Claim; Bounty Placer Claim; White Pine Claim; Bonanza Placer, Esmeralda, Murphys District (Esmeralda District; Sperry District), East Belt, Calaveras Co., California, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 100Ma - 100Ma at this locality