Geochemical surveys for copper in soil and bed rock were made over 6 magnetic anomalies in the Tennant Creek Gold-Field, Anomalous amounts of copper were found to be coincident with magnetic anomalies at Orlando and Golden Forty North. Samples from the known ironstone bodies cropping out in the Tennant Creek 1-mile area were analysed for copper to determine the regional distribution of copper in ironstone. Statistical treatment of the results suggests that at least 8 of these bodies merit further attention. During the course of the field work action was taken by Peko Mines N.L. to test the Orlando magnetic-geochemical anomaly and gold-copper mineralization has since been disclosed at depth. Recommendations for drilling magnetic-geochemical anomalies at Golden Forty North and Cat's Whiskers, and for further geochemical prospecting, are mad