Strategic Gold Prospection
Strategic prospecting is a systematic type of prospection that needs to give continuous information about the entire prospected surface. Its role is that of pointing out abnormal areas in probable relations with mineralization.
Detailed geochemical or tactical prospection
Detailed geochemical or tactical prospection is always a systematic prospection and is useful to define the origin of strategic abnormalities, its superficial extension and the levels reached by the tenors. It is necessary to point out that in these three states it is possible to obtain, through surface information, the image of the intersection of the alteration area with the surface, in other words, secondary abnormalities.
In certain cases, the geochemical tactic can be carried out through more punctual operations of recognition on the surface: geochemical with perforating drill or an analysis of ditches.
Structuring of a geochemical prospecting campaign
The structuring or project will vary according to the fixed objectives and the climatic conditions of the region and will be done with the help of a geochemical expert. The main points that will need to be resolved are the following:
- Type of sampling
- Density
- Elements that are to be analyzed
Types of sampling
As has been said before, the samples can be fluvial sediments of grounds or rocks. In the case of a strategic prospection the fluvial or stream sediments will be predominately sampled, which is a technique that actually seems to bring about the best results. A tactical prospection requires the change of sampling of the grounds, normally done at a depth of around 30 to 50 cm. In the case of the presence of a particular superficial alteration or of a somewhat strong recovering, it will be necessary to use particular techniques such as the use of a drill whether these are manual or run by motor.
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