Geological Survey Bulletin, Ausgabe 1451

adit adit fig altered and mineralized altered rocks Alum Mountain Alunogen andesitic Apache Spring ash-flow tuff Assay values Big Dry Creek breccia Brock Canyon Bureau of Mines Bursum caldera chip sample Copperas Creek Creek area dacitic dump exposed fault feet fluorite fluorspar Fork fracture zone geochemical samples geologic Gila Cliff Dwellings Gila fluorspar district Gila Primitive Area Gila River Gila study area Gila Wilderness gouge gravity Holt Gulch intrusive Little Dry Creek LLLLL LLLLL located mile mineral deposits mineral resources mineralized rocks Mogollon Mountains N N N outcrops oz gold oz silver oz/ton Panned concentrates percent fluorite Primitive area boundary prospect pit pyrite Quartz Latite quartz vein Ratté resurgent dome rhyolite rhyolite dike Sacaton Sample numbers Semiquantitative spectrographic shaft silicic silicified structural taken tellurium Tr Tr tract trench tuff of Apache Unaltered rocks volcanic complex volcanic rocks volcaniclastic Whitewater Creek Wilderness boundary ZZZZ ZZZZZ