PETROGRAPHIC EXAMINATION OF CONCRETE AGGREGATE AGGREGATE BENEFICIATION INVESTIGATIONS SAN LUIS DAM CENTRAL VALLEY PROJECT, CALIFORNIA

摘要

Concrete aggregates from Panoche Creek deposit (N l/2 Section 15, T 15 S, R 12 E, MDM) were processed for beneficiation in the Structural and Concrete Branch by the methods of heavy liquid separation, by autogenous abrasion, and by heavy media separation using the laboratory cone separator. The samples were petro graphically examined to evaluate the degree of beneficiation attained by the various methods. This report is a summary of the results of the petro graphic evaluation of the beneficiated samples.