Geological Survey of Tanzania was contracted by Dharti Minerals Company Limited to undertake geophysical survey using Induced polarization (IP) and resistivity method at PML0895TNG, PML0896TNG, PML0897TNG, PML0898TNG AND PML91299/EZ located in Msangazi village, Handeni District in Tanga region. The general purpose of this work was to conduct IP survey in order to depict any subsurface structures that might be controlling copper mineralization. The work involved gathering and review of different published geoscientific reports of concession area. The information obtained were used to plan a fieldwork which involved conducting geophysical survey by using Induced polarization method. Thirty four (34) profile lines were planned to be surveyed by deploying dipole – dipole configuration at an electrode interval of 10 m. The geophysical work went together with geological mapping of lithological units and structures and establish their relationship with copper mineralization within the area.

The concessions area is mainly dominated by garnetiferous hornblende gneiss particularly in the southern part of the area. The northern part especially near Msangazi River is covered by superficial soil. Besides, the results from ground geophysical survey under IP method conducted in the concession area has shown variation of resistivity and chargeability along the surveyed profile lines. The areas with high resistivity were demarcated as the anomalous zones which are occupied by outcrops of garnetiferous hornblende gneiss. The lithological units is well exposed on the surface and widely dispersed and cross-cut by quartz veins trending east – west. The copper mineralization is associated with a mineral garnet and probably hosted and controlled in quartz veins filled structures within garnetferous hornblende gneiss.

Moreover, further exploration work (geological mapping, pitting, trenching, geochemical sampling and drilling) on the demarcated zone is recommended in order to reveal potential quartz veins filled structures hosting copper mineralization.