On the basis of a mineral survey the Ventana Wilderness additions and adjacent roadless areas in California offer little promise for the occurrence of mineral or energy resources. There has been virtually no history of mining in the area and very little mining has been done in geologically similar regions nearby. Oil and gas are produced from the Monterey Formation nearby, but the small areas of Monterey rocks in the area appear to lie byond the limits of productive sandstone. Quantitative data on the abundance of phosphate in the Monterey Formation would be useful in evaluating its potential for future use. Exploration for oil and gas in the Monterey Formation in adjacent areas could provide new data that could modify this current assessment of the oil and gas potential in the study area.