The island of Sumatra has a long history of gold mining that dates back to the 4" century but large scale gold production and discovery of world-class gold deposits did not happen until recent times. With the advent of a three-fold Increase In gold productloo to 300koz per annum In 20l3, and the discovery of world-class gold deposits at Martabe and Mlwah, Sumatra has become an emerging world-class magmatic gold belt. The island contains a total known endowment of 27.19 million ounces of gold,
1"51.13 million ounces of sliver and 9.20 billion pounds of copper from 32 de11.es11s and prospects. Prime
gold sources are from hlgh-sulfldatlon eplthermal deposits that account for 41.3% by resource discovery with the largest deposit being Mertebe (8.20 million ounces).
Two distinctive metallogenlc systems, the Aceh-Toba Metallogenlc (Au-Cut.Mo) Province In Northern Sumatra and the Barlsan Metallogenlc (Au-Ag) Province In Central and Southern Sumatra along with two discrete tlusters of Au•Cu•base merals (the lubuk Sik0plng and West Jambl Clusters) reflect distinctive tectonic and geologic histories. The Aceh-Toba Metallogenic Province has dominant high sulfldatlon eplthermal and porphyry occurrences, developed In Northern Sumatra covering the Ateh and Batak Tumors, two broad uplifted zones with very active N•S trending selsmlclty, corresponding to the longest and most complex tectonic and geologic history since 4 Ma. The Barlsan Metallogenlc Province,

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