Bulletin, Issues 2-5

abst Acad adit Amer andesite anticline barite Basin beds brecciated Bull Bulletin Caballos calcite Canyon cent CaF2 coal field Code 15 Colorado commissioner contain Cope copper country rock Cretaceous Darton east Engr Eocene fault feet fissure fluorite fluorspar formation fossil fracture galena Geol geology Grant County Hill igneous illus iron Jornada del Muerto Keyes Lake Valley lands lease lessee limestone Luna County Magdalena manganese manganiferous Meinzer Mexico miles mill Mineral Resources Mines and Minerals mining claim mining district Mountains occurs oil and gas open cut outcrop owner oxides Permian pre-Cambrian Proc prospect psilomelane Puerco Puertecito quadrangle quartz region replacement rhyolite San Juan County Sandia sandstone Santa Fe shaft shales Sierra silica Silver City Socorro County spar structure surface Survey Tertiary Texas United vein width zone