Identification and description of boron deposits from neutron logging

The reaction of minerals of boron to neutron radiation; is such that neutron logging of boreholes provides a geophysical tool with which to seek their ores.. It is based on the reaction of the isotope of boron B1O with a thermal neutron: B10 + n9 → Li7 + α. A sonde designed specifically for the purpose has been tested. Until they are generally available, another type can easily he modified for neutron logging of boron. Different procedures and interpretation permit initial identification, preliminary assay, and estimates of reserves. —M. Russell