projects

INDONESIAN EXPLORATION OFGOLD & COPPER

Barisan Porphyry Belt

Lower Tengkereng Porphyry Cu-Au Prospect


The Lower Tengkereng prospect is located approximately 15 km south-southeast of the Abong prospect within the Barisan II IUP. Porphyry copper-gold mineralization was discovered by CRA Exploration in the late 1990s following a program of exploration that involved the drilling of seven (7) diamond drill holes. East Asia Minerals has undertaken a program of work, including two successful diamond drill holes, which has confirmed the results of CRA Exploration and provided further information on the geology and mineralization. The geology of the prospect is dominated by strongly altered diorite porphyry that has intruded andesitic volcanics, volcaniclastic sediments and limestone of the Mesozoic Kenyaran Volcanic Formation. Later volcanics locally overlie the diorite. Work by East Asia Minerals, Barisan Gold's predecessor company, has demonstrated that widespread, moderate-grade gold and copper mineralization is hosted within altered diorite porphyry. East Asia Minerals drilled 2 holes at Lower Tengkereng in 2010. Both holes hit mineralization from surface to the end of the hole, confirming the presence of a significant gold copper porphyry system.

Hole No. From (m) To (m) Interval (m) Au (g/t) Cu (%)
LTD001 2.3 417.4 415.1 0.39 0.18
Includes 90 417.4 327.4 0.45 0.23
LTD002 0 499.7 499.7 0.26 0.11
Includes 134 262 128 0.5 0.22


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