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Paper Number: 157
Gold
exploration using integrated geophysical survey methods: A case study
for Ncema area of Esigodini in Zimbabwe.
Ngomayezwe, L.1 and
Zulu, J.M2
1National
University of Science and Technology, Bulawayo, Zimbabwe (Student).
6339 Nketa 9, P.O Nkulumane, Bulawayo, Zimbabwe.
Email: ngomayezweluckymore@yahoo.com.
2Josrum
Enterprise (Pvt) Ltd (Consulting Geologists and Geophysicists),
Bulawayo, Zimbabwe (Supervisor).
129A Fort Street, Albion Flats Second Floor, Suite 5 Office 3,
Bulawayo, Zimbabwe.
Email: zulujosephm@yahoo.com.
___________________________________________________________________________
Reliable data in the form of mineral potential is important for
exploration and development of mineral resources. In Zimbabwe mineral
resource development has played an important role for sustainable
economic development. Small scale mining claims in Zimbabwe often point
to possible significant mineralization. The partitioning of ore bodies
by small-scale mining claims belonging to different owner’s present
challenges to modern scientific exploration, this includes Ncema area of
Esigodini in Zimbabwe. The potential gold mineralization at Ncema area
of Esigodini remains obscured. The significance of this study was such
that it would assist in obtaining the obscured potential gold
mineralization data at the survey area which lies in the mineral rich
greenstone belt. An integrated geophysical surveys which comprised of
electro-seismic and electromagnetic methods was adopted. A combined
survey was carried out in order to appraise the gold mineralization
potential of the area. Measurements of the ground conductivity were
carried out using Frequency Domain Electro-magnetometer (FDEM-8) while
the Electro-Seismic Unit (ESU) was exclusively used to delineate
intrusive bodies, contact zones and structural breaks between the
contrasting rock units and fractures. FDEM data was obtained along
traverses as a first step in order to locate suitable ESU stations.
Electro-Seismic Unit was thereafter carried out on these suitable
stations. The integrated interpretation of both data successfully
confirmed information regarding to interesting structures with potential
to host gold mineralization.
References:
[1] Spiegel S.J (2009) Resources Policy 34(1-2): 39-44
[2] Ngorima C.F and Maponga F (2003) Journal of Cleaner Production
(11)2:147-157
[3] Smith M.J et al. (1990) In: Geophysical Exploration for
epithermal gold deposits: Journal of Geochemical Exploration, v
(36), 375-412
