In economic geology, resources of a particular
mineral or commodity include all known reserves of that
material, plus all other deposits of the mineral or commodity
that may become available over time. This includes deposits
that are not yet discovered, plus deposits that are low grade
or not economically feasible to recover using present technology.
Agencies such as the U.S. Geological Survey routinely
make economic resource assessments for small areas, regions,
states, countries, and the globe, in order for the government
and industry to be able to plan for future availability of a
commodity, and for determining prices of the mineral or
metal. Such assessments include all known deposits, plus an
estimate of how many deposits of a particular grade are likely
to be present based on expert knowledge of the geological
relationships in the region being studied.
rheology See VISCOSITY.
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