Gold exploration teams use electrical resistivity and induced polarization (IP) surveys to help narrow down drilling targets before committing to costly follow-up work. In one documented Brazilian gold exploration project, Geomative supported this process with GD-10 resistivity and IP equipment. That case provides context for evaluating electrical survey methods; it does not document a GD-32 deployment in Brazil.
Mineral exploration teams typically face a common constraint: traditional field surveys can be slow and expensive to run, and signal quality can deteriorate in deep or high-resistance ground conditions. Without timely feedback on data quality during acquisition, crews risk returning to a site later to repeat measurements, adding cost and delay to a project timeline.
In the Brazilian case, the exploration team used Geomative’s GD-10 Single-channel Resistivity and IP Imaging System to investigate electrical and IP anomalies associated with potential mineralization and help identify targets for follow-up exploration. Geomative’s broader electrical survey range includes the single-channel GD-12 and the multi-channel GD-22 and GD-32. Ground, tunnel, borehole, and underwater survey configurations require confirmation of compatibility between the selected instrument, accessories, and deployment conditions.
The GD-32 offers 12 receive channels, a maximum transmit power of 15kW, and full-waveform acquisition. Parallel reception can improve productivity where the measurement sequence permits simultaneous readings. Investigation depth remains dependent on target properties, survey geometry, usable field output, and noise conditions rather than channel count alone.
The published specifications for GD-12, GD-22, and GD-32 include 24-bit A/D conversion, a 140dB dynamic range, and selectable 50Hz/60Hz power-line rejection of ≥120dB. These values should not be generalized to every GD-series instrument. Field data review can help crews flag questionable readings and conduct targeted repeat measurements before leaving a site, but does not guarantee that all data problems will be identified before demobilization.
In the Brazilian gold project, survey results supported interpretation of potential mineralized targets and follow-up exploration planning. Geophysical anomalies indicate subsurface electrical or polarization contrasts; they do not by themselves confirm gold mineralization or the presence of a mineral resource. Confirmation requires further geological work, including drilling, sampling, and assays.
For exploration teams evaluating survey equipment, the practical takeaway is to select a model and complete configuration against the target, ground conditions, survey area, and required productivity. Each model has a specified receive-channel count and rated transmitter limits. Compatible expansion equipment may increase system capacity, while actual output depends on the power supply, cables, switching devices, and field load.
A GD-32 evaluation should therefore include representative field measurements and a demonstrated processing workflow, with results feeding into, rather than replacing, geological verification.
About Shenzhen Geomative Technology Co., Ltd.
Shenzhen Geomative Technology Co., Ltd., headquartered in Shenzhen, China, was founded in 2011 and develops geophysical instruments and digital subsurface software under the Geomative brand. The company serves customers in more than 50 countries and regions across mineral exploration, groundwater investigation, environmental monitoring, and engineering survey sectors. Geomative has been recognized as a National High-Tech Enterprise in China.
https://www.geomative.com/
Geomative Co., Ltd.
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