Usage of a Mesh or Netting

In certain cases an existing reticle can be taken advantage of done for geophysical or geochemical prospection. In the contrary case the first working consists in drawing a series of regular ranges starting from a base line. For example for a lifting at a scale of 1:2.000 these ranges will be spaced at forty meters and over each one of them a reference of twenty meters will be placed on them. Obviously the type of meshing that is used will be in function, besides the scale, from the shape and size of the indicator. For example, it might be square or rectangular with varying dimensions between 20x20 meters and 80x160 meters. Usually this job is done with a compass and the estimate of the slope with a clinometre.

Lifting
The lifting work is not different from that of the search for indications: observation of the surrounding area, observation of the outcropping, relative measures of stratification, fractures, determination of the mineralization and its percentages, etc. in a region where the density of the outcrops is small, al the courses of water and incisions need to be gone through, even the crest where these begin in the search of outcrops. On a point or place that is sufficiently promising and where the formations are very creased, it will be indispensable to do a structural study. In this study of the search it will be necessary to attentively examine: particular structures, particular horizons, graphite, silicified or with cherts, conglomerates, etc) particular paleogeography, positions of the mineralization in relation to an intrusion, vein, fracture area, hydrothermal alternations, vegetations, etc. The compilation form of the field booklet will be the same as for an indicator search, but the sections and drawings will be in much greater amount. This will also have a indication file.