SEM-data for placer gold related with some valley around Borov Dol porphyry copper deposit, R. Macedonia

This paper presents SEM data from research of gold aggregates which was found from schlich prospection which was performed along the creek Meckin Dol, around the Borov Dol Cu- Au porhyry deposit. The size of the tested gold aggregates ranges from 30 m to about 600 m.Form of gold aggregates was isometric – irregular form.The chemical composition of gold aggregates display an average gold content ranging from 74.15% - 99.32%, silver with an average content of 0.3% - 24.68%,and an average copper content of 0.04 to 11.06%. Fe, Bi, Se, and Te are represented with content less than 1%. In general the examined gold aggregates, by their chemical composition, are characterized by high purity ranging from 750 to 996