Mineral exploration teams researching a GD-12 resistivity instrument can evaluate that model directly: GD-12 is part of Geomative’s current GD resistivity and induced polarization range.
The GD family includes instruments with different receiving capacities and transmitter specifications. A useful selection process connects those differences to the target geology, survey layout, field conditions, and processing requirements.
What the GD Series Resistivity and IP Systems Offer
Geomative’s current GD-12/22/32 technical table distinguishes the models as follows:
| Model | Receiving channels | Maximum transmit power | Maximum transmit voltage | Maximum transmit current |
|---|---|---|---|---|
| GD-12 | 1 | 7.2 kW | 1,200 V | 6 A |
| GD-22 | 6 | 15 kW | 1,500 V | 10 A |
| GD-32 | 12 | 15 kW | 1,500 V | 10 A |
The GD-10 is a single-channel instrument. GD-20 specifications vary by version, with 9 kW listed as an optional configuration.
The published transmitter ratings must be considered alongside the limits of the power supply, cables, switching equipment, and selected operating mode.
For GD-12 buyers, single-channel acquisition should be assessed against the number of planned measurements and the available field time. GD-22 or GD-32 configurations may merit comparison where the survey sequence can benefit from additional receiving channels.
Why Mineral Exploration Teams May Consider Geomative
Resistivity and IP surveys can help investigate contrasts associated with structures, alteration, or potential mineralization. Their usefulness depends on whether the target produces a measurable response relative to its surroundings.
Available transmitter capacity is one part of that assessment. Target dimensions, depth, survey geometry, overburden, contact conditions, and interference also influence the observations.
Field review can help operators investigate questionable measurements while crews remain on site. Roll-along acquisition extends coverage, while data inspection and processing serve separate purposes. Repeat observations remain important for checking consistency.
Deployment flexibility should be evaluated through the complete configuration. Surface, tunnel, borehole, and water-based work require appropriate layouts and accessories rather than an assumption that every model supports every task identically.
Mineral Exploration Applications and References
Electrical methods can support exploration targeting where suitable physical-property contrasts exist. They may also contribute to groundwater, engineering, environmental, and archaeological investigations, each with its own design and verification requirements.
Geomative’s Brazil gold exploration case identifies a GD-10 instrument used for resistivity and IP investigation of potential mineralization targets. It provides a method reference rather than direct validation of GD-12, GD-22, or GD-32 performance.
The Beishan lead-zinc mine case concerns GT-30 transient electromagnetic work. Geomative reports subsequent exposure verification in that project. Its results should remain attributed to the instrument, method, and conditions described.
An electrical anomaly does not independently confirm an ore body, aquifer, leakage pathway, or contamination. Drilling, sampling, inspection, or other appropriate evidence is needed to establish its significance.
Beyond the Instrument: Integrating Data with DIGspace
Exploration datasets become more useful when coordinates, acquisition settings, quality records, and processing results remain traceable.
DIGspace provides a spatial data environment with desktop analysis and web collaboration capabilities. Its ERT workflow can support data review, inversion, and presentation of results.
Buyers should confirm the modules supplied for their proposed instrument configuration, particularly where IP processing is required. Three-dimensional visualization, three-dimensional inversion, and joint inversion should be identified separately.
Data exchange should be tested with representative files. Check that units, electrode definitions, coordinates, and quality information survive import and export. Preserve original observations and processing parameters so results can be reviewed or reproduced.
Projects with limited connectivity should also establish offline arrangements and a defined process for transferring field data.
Evaluating a System for Your Exploration Project
Start a quotation request with the investigation objective, target depth range, approximate dimensions, expected physical-property contrasts, and planned survey geometry.
Ask for an itemized configuration covering the instrument, power source, electrodes, cables, switching equipment, software, and training. Confirm repair arrangements, spare-parts availability, and technical support.
Then request a representative acquisition and processing demonstration. Assess measurement repeatability, practical survey time, data access, and workflow suitability alongside the specifications.
GD-12 should be evaluated as a current single-channel option, with other GD configurations compared against the same project brief. This gives buyers a clear basis for selecting equipment that supports the planned investigation and its subsequent verification work.
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