Background information to accompany the atlas of some metal and nonmetal mineral provinces in the conterminous United States

Online link https://pubs.usgs.gov/circ/1980/0792/report.pdf
Description Explains how a set of mineral resource province maps were compiled, what sort of information went into them, how they should be interpreted, and why they are important.
Originators Tooker, Edwin Wilson
Publication U.S. Geological Survey Circular 792

This publication is available only as a PDF document.