Mineral exploration includes :
- the prospecting,
- the detailed mapping,
- the digging of trenches,
- the stripping,
- the grooving,
- And the different geophysical and geochemical surveys.
The different geophysical surveys are collected, or over ground, or in surface and will allow to obtain anomalies caused by minerals in the rock. Then, survey teams will go characterize on the field, anomalies and additional surveys will be launched on the surface to reduce the search area. Samples will be taken directly into the rock or in soil (till, sediment) of the anomalous sector in order to perform analyzes to find the presence of economic metals
THE DISCOVERY OF A MINERALIZED SHOWING
The discovery of a mineralized showing occurs when we concretely find a value item. It is at this phase that we decide to perform more advanced exploration work whether for detailed geophysical surveys or for digging of trenches. Sampling is more systematic than exploration and the objective is to identify continuity and consistency in analysis values.;
At this phase, we can now call a mineralized deposit. The exploration in surface is becoming increasingly significant and it is at this level that we have to thoroughly test, the discovered deposit with the help of drill. Wood cutting works begin whether for the building of new roads, the stripping of the mineralized zones or the preparation of drilling sites. So, the drilling of trenching turns into stripping on the prime sectors where we must remove all the part of the top (soil and organic matter). Following this work, the teams adequately clean the rock in order to take systematic samples using the grooving saw and to perform a geological detailed mapping.
All these elements will set the stage at the last step to determine the economic potential of the bed to take the step of a deposit: the drillings. This step is the most expensive of all, and it will decide if the company goes ahead or if that it is not worthwhile to invest money in the project. This decision will lead to the sale of the property to another company or simply ignore the mineral claims previously staked
Planning and resource exploitation
Finally, it is at this step that permits, leases and licenses are needed and that the project can be submitted to an environmental assessment with public authorities. A small quantity of mineral deposits discovered becomes exploited mines in the world. The prefeasibility and feasibility studies on the future exploitation can take up to 10-15 years for the mine to develop. Rarely the projects reach this course of development.