Exploration Geochemistry
Definitions and Basic Concepts
There are many definitions of geochemistry, but the definition is done by Goldschmidt emphasis on two aspects, namely:
ï Distribution of elements in the earth (description)
ï The principles governing the distribution of the above (interpretation)
This definition basically states that the geochemical study the number and distribution of chemical elements in minerals, ores, rocks soil, water, and atmosphere. Not limited to the investigation of the chemical elements as the smallest unit of the material, also the abundance and distribution of isotopes and the abundance and distribution of the atomic nucleus.
Specific geochemical exploration concentrated on measuring the abundance, distribution, and migration of ore elements or elements that are closely related to the ore, with the aim of detecting ore deposits. In a more narrow sense of exploration geochemistry is the systematic measurement of one or more trace elements in rocks, soils, active river sediment, vegetation, water, or gas, to obtain geochemical anomalies, namely abnormal concentrations of certain elements that contrast against the environment (background geochemical ).
Basic Principles of Prospecting / Exploration Geochemistry
Prospecting / exploration geochemistry basically consists of two methods:
---> The method uses mechanical dispersion pattern is applied to a relatively stable mineral in the Earth's surface conditions (such as gold, platinum, cassiterite, chromite, rare earth minerals). Suitable for use in areas with climatic conditions limit the chemical weathering.
---> The method is based on chemical dispersion pattern recognition. This pattern can be obtained either in the ore deposits are eroded or are not eroded, both of which are not decayed or weathered. This pattern is less noticeable as on the mechanical dispersion pattern, because the elements that make up the pattern of dispersion can:
has a different mineralogy in ore deposition (eg serussit anglesit formed by weathering and deposition of galena)
can be dispersed in solution (Cu 2 + ions in groundwater from the sediment chalcopyrite)
can be hidden in other minerals (eg Ni in serpentine and adjacent to a depressing Empung sediment pentlandite)
can be adsorbed (eg Cu teradsosbsi on clay or organic material in streams can be supplied by groundwater that passes through the deposition of chalcopyrite)
can join the organic material (eg Cu in umbuhan or animal)
There are many definitions of geochemistry, but the definition is done by Goldschmidt emphasis on two aspects, namely:
ï Distribution of elements in the earth (description)
ï The principles governing the distribution of the above (interpretation)
This definition basically states that the geochemical study the number and distribution of chemical elements in minerals, ores, rocks soil, water, and atmosphere. Not limited to the investigation of the chemical elements as the smallest unit of the material, also the abundance and distribution of isotopes and the abundance and distribution of the atomic nucleus.
Specific geochemical exploration concentrated on measuring the abundance, distribution, and migration of ore elements or elements that are closely related to the ore, with the aim of detecting ore deposits. In a more narrow sense of exploration geochemistry is the systematic measurement of one or more trace elements in rocks, soils, active river sediment, vegetation, water, or gas, to obtain geochemical anomalies, namely abnormal concentrations of certain elements that contrast against the environment (background geochemical ).
Basic Principles of Prospecting / Exploration Geochemistry
Prospecting / exploration geochemistry basically consists of two methods:
---> The method uses mechanical dispersion pattern is applied to a relatively stable mineral in the Earth's surface conditions (such as gold, platinum, cassiterite, chromite, rare earth minerals). Suitable for use in areas with climatic conditions limit the chemical weathering.
---> The method is based on chemical dispersion pattern recognition. This pattern can be obtained either in the ore deposits are eroded or are not eroded, both of which are not decayed or weathered. This pattern is less noticeable as on the mechanical dispersion pattern, because the elements that make up the pattern of dispersion can:
has a different mineralogy in ore deposition (eg serussit anglesit formed by weathering and deposition of galena)
can be dispersed in solution (Cu 2 + ions in groundwater from the sediment chalcopyrite)
can be hidden in other minerals (eg Ni in serpentine and adjacent to a depressing Empung sediment pentlandite)
can be adsorbed (eg Cu teradsosbsi on clay or organic material in streams can be supplied by groundwater that passes through the deposition of chalcopyrite)
can join the organic material (eg Cu in umbuhan or animal)
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