BLUE RANGE WILDERNESS, ARIZONA AND NEW MEXICO.

A mineral survey of the area was completed and it was determined that a probable resource potential for molybdenum, copper, and silver is present in volcanic rocks of middle Tertiary age in the southern and southwestern parts of the area. There is also a likelihood for the occurrence of base-metal resources (including porphyry copper deposits) of Laramide age beneath the middle Tertiary volcanic rocks that cover the area, but data are insufficient to assess the resource potential. Improved techniques for interpreting geophysical data collected over complex volcanic terranes should be applied in an effort to identify Laramide intrusives beneath the middle Tertiary rocks. Additional geologic studies of the major faults and volcanic centers might enhance mineral-deposit target definition in the middle Tertiary rocks.