Centurion Minerals, an Indonesian-based company, has declared that the newly identified vuggy massive silica outcrops in the Simpang Tiga and Zulham prospects revealed gold showings that have expanded the gold zone, located in the Banda Raya, Northern Sumatra property, to about 2.5 km.
The vuggy texture is believed to be caused by mineralization and alteration processes in an environment of high-sulfidation epithermal deposits. Gold is disseminated into the regions of vuggy silica in a number of epithermal deposits.
Drill targets have been verified in the Zulham epithermal gold prospect. Construction of drill pad is in the last stage of preparation to start a first-phase drilling program, which will analyze the expansion of the breccia zones, wherein gold assays have been reported from mobile drilling. At least 1,500 m program has been made to analyze the breccias bearing gold for high-grade zones at depth as well as to cut an individual breccia rock formation. Earlier, three boulders located on the ridge crest have reported gold values of 3 g/t, 6 g/t, and 20 g/t gold. Highlights of the prior drill hole results from the gold prospect comprise 3.2 m at 1.79 g/t gold from hole ZWDH-09 and 5 m at 2.76 g/t gold from hole ZWDH-08.
Two of the four drill holes completed in the Keladi prospect have encountered zones of sulfide mineralization and epithermal-style modification. Assay results from these holes are still pending. These rigs will be shifted soon to analyze the Simpang Tiga epithermal gold prospect.
The Geudob, Zulham, Simpang Tiga, and Keladi prospects are located along the southern rim of a circular feature, which is a segment of the Miwah-Menawan gold lineament.