Asian Journal of Microbiology, Biotechnology & Environmental Sciences Paper

Vol 19, Issue 4, 2017; Page No.(779-785)

STATISTICAL EVALUATION OF BAEDISIFU MINERALIZATION RELATED STREAM SEDIMENT MAMBERAMO RAYA REGENCY, PAPUA PROVINCE INDONESIA

ADI TONGGIROH AND RYOHEI TAKAHASHI

Abstract

This study aimed to distinguish the mineralization characteristics between igneous and sedimentary rocks in the area, by applying stream sediment method and correlating statistical characteristics of the elements contained. Sulfides metal mineralization which represents by Cu is characterized by closed-relationships with Pb and Zn. The presence of those elements is typical for porphyry copper gold deposits. Based on proximity matrix and dendogram cluster membership, there are six groups of mineralization: (1) Au, W, Bi, Mo (2) As, Sn, Mo, Pb (3) Cu, Pb, Mo, Au (4) Pb, Ag (5) Mo, Au, Sn (6) Ag, Sn. There is a specific feature in these groups, where As, Mo, and Pb are clustered, and in other cluster Cu and Zn. This feature suggesting a mineralization process that produced metal associations of Au-Cu-Mo, Cu- Pb-Zn in a porphyry copper system. Proximity matrix test was also performed on sampels AD/RC-02, AD/ RF-04, AD/RC-05, which resulted an indication that chip samples taken from ourcrop and floats (metamorphosed altered andesite-diorite boulders) taken form stream sediment, has a relationship in mineralization process, despite the different kind of the rocks.

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