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Mineral survey and research

06 Jan 2021
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Reconnaissance survey

Reconnaissance surveymeans processing of data collecting in field, geological mapping survey, geochemistry survey, geophysics survey, or other methodology. The survey area is large covering the potential area to discover the economic minerals for the further survey. The evaluation of mineral resources in the step depending on the comparison of the geological characteristics of the site with the discovered mineral resources.

Prospecting

Prospectingmeans exploring mineral site in the potential area to discover the economic minerals resulting from the reconnaissance survey by examining rock characteristics, geological mapping, geochemistry survey, geophysics survey, or other methodology and may be dig the bore hole, trench, or conduct drilling survey. The evaluation of mineral resources in this step is expectation from the exploration results.

Semi-detailed exploration

Semi-detailed explorationmeans scoping of the mineral site in the discovered area resulting from prospecting step by conducting detailed geological mapping survey on ground, digging the exploration hole, making trench exploration, drilling exploration or additional method and studying mineralogy. The results will indicate the significant geological characteristics of mineral site which can preliminarily estimate size, shape, and richness of the mineral site.

Detailed exploration

Detailed explorationmeans clarifying the boundary and shape of mineral site discovered in semi- detailed exploration step by conducting detailed geological mapping survey on ground and underground, digging the exploration hole, making trench exploration, drilling exploration

Tunnel exploration or other methodology

Tunnel exploration or other methodologyincluding study on mineralogy and mineral dressing. The exploration results from this step will clearly indicate size, shape, and richness of the mineral site in three dimensions.

Exploration area

Exploration areameans the boundary of the survey classifying by the size of the survey area in 3 levels e.g., large area (>100 square kilometers), medium area (10-100 square kilometers), and small area (<10 square kilometers).

1. regional exploration projectmeans the exploration conducting in the large area (>100 square kilometers) expecting to discover the accumulation of minerals by reviewing the geological map scale 1:250,000 or 1:1,000,000 and interpreting the data from geophysics aerial survey to collect the preliminary mineral site and specify the mineral potential site.

2. Semi-detailed exploration projectmeans the exploration conducting in the medium area (10-100 square kilometers) in the mineral potential site resulting from the regional exploration or the area with adequate data on the accumulation of minerals, the geological map scale 1:50,000 may be applied together with geophysics aerial survey to specify the boundary of the mineral site.

3. Detailed exploration projectmeans the exploration conducting in the small area (<10 square kilometers). It is the mineral site exploration in the specific area where the mineral site is discovered or in the mineral site area resulting from the semi-detailed exploration to specify size and orientation of mineral site and evaluate the quantity of mineral resources.


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Department of Mineral Resources

Ministry of Natural Resources and Environment
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