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Publication Extents

Not all publications have extents, not all extents are completely accurate
Gold in placer deposits
Warren Yeend, Daniel R. Shawe, Kenneth L. Wier
1989, Bulletin 1857-G
Man most likely first obtained gold from placer deposits, more than 6,000 years ago. Placers account for more than two-thirds of the total world gold supply, and roughly half of that mined in the States of California, Alaska, Montana, and Idaho.Placer deposits result from weathering and release of gold from...
Gold deposits in metamorphic rocks: Part I
Ed DeWitt, Jerome Waegli, Thomas D. Light, David A. Brew, Roger P. Ashley
1989, Bulletin 1857-D
Contents Gold in the United Verde massive sulfide deposit, Jerome, Arizona The Alaska-Juneau and Treadwell lode gold systems, southeastern Alaska...