THE EXISTANCE OF MINERAL GOLD DEPOSIT ZONE USING INDUCED POLARIZATION METHOD AT MUARA MANDERAS, JAMBI

PROCEEDINGS JOINT CONVENTION BALI 2007
The 32^nd HAGI, The 36^th IAGI, and The 29^th IATMI Annual Conference and Exhibition

THE EXISTANCE OF MINERAL GOLD DEPOSIT ZONE USING INDUCED POLARIZATION METHOD AT MUARA MANDERAS, JAMBI

Feisal Dirgantara¹, Joko Hariyadi²

¹Lab.Geofisika, Jurusan Fisika FMIPA, Universitas Gadjah Mada
²PT Aneka Tambang Unit Geomin, Pulogadung, Jakarta Timur

ABSTRACT

A geophysical survey using induced polarization method was carried out in Muara Manderas, Jambi. This research aimed to determine the existence of mineral gold deposit of the research area based on induced polarization data analysis. Data acquired using IP Yokohama LF 82 receiver-transmitter and Global Positioning System (GPS) during 21 days, which cover an area of 0,5 km x 1 km. The measurement spacing was 25 – 50 m.

Raw data processing was performed using IP measurement of frequency domain. Apparent resistivity data shows the liquid content of rock formation. Percent frequency effect shows the mineral alteration content of rock formation. Quantitative interpretation was done by cross section anomaly modeling based on Surfer 8.0.

From the XRD test laboratory, geochemical test and geological traversing, the mineral gold deposit was performed as argilic. By using induced polarization, argilic was determined as low apparent resistivity and high percent frequency effect. It was showed that argilic has the most spacious deposit at the regional structure in line SM 0 and SM -100, while small deposit at the local structure also appeared in line SM -500.