Mineral assessment tracts in San Francisco county, California

[Additional scientific data in this geographic area]

PC11: Massive sulfide, Besshi (24b) (Mesozoic) , covers 83 % of this area
90%50%10%5%1%
00001
PC39: Low-sulfide Au-quartz vein (36a) (Mesozoic) , covers 83 % of this area
90%50%10%5%1%
00001