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Exploration for minerals
Drilling and downhole logging

Borehole drilling allows us to create a 3dimensional shape and size of orebody
We can find out the rock geochemistry through
chemical analysis ­ atomic absorption spectrometry (AA) /
xray fluorescence spectrometry (XRF) /
inductively coupled plasma mass spectography (ICPMS)

A borehole allows…

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Access may be difficult over wider areas
Geological mapping

Field work based ­ direct observation using trained geologists
Advantages:
High level of accuracy to pinpoint resources at the surface prior to exploitation
Can be very detailed ­ good to assess the problems of exploitation and viability
of resource
Samples can…

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Geophysical surveying

Electrical Resistivity Survey
This method is used for gold exploration
Two electrodes are placed in the ground and an electrical current is passed between
them
If the rock is a good conductor it will have low resistance

Magnetic Survey
Using a magnetometer to measure magnetic readings.
Can be…

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