Brief summary of geological features and known mineral occurrences Wilderness Study Areas 4-14, 4-16 Fishhook - Day Mine 1) The Fishhook - Day Mine areas are underlain by middle - to - upper Tertiary age volcanic flows, breccias, and tuffs, and by late Tertiary-Quaternary basin-fill deposits, primarily of alluvial and lacustrine origin (sands, gravels, etc.); 2) The WSA's do not contian any known base or precious metal occurrences; 3) Secondary copper mineral deposits have been reported from fissure veins in middle Tertiary volcanic rocks along the western and southern borders of the WSA's. Other copper deposits are located several miles to the south of WSA 4-16. No production has been recorded from exploration prospects in these areas; 4) Minor occurrences of gold, silver, lead, zinc, and molybdenum are associated with the copper deposits. Mining claim reports indicate that mineral amounts are insufficient to be of economic value; 5) One known occurrence of manganese is located to the south of WSA 4-16 in middle Tertiary volcanic rocks. There are no reports of production; 6) Information concerning mineral types, claim development, and ore production is unavailable for other prospects in this region; 7) The Safford - Lone Star Mining District, to the south of the WSA's, has been actively mined and prospected since the late 1800's.