Coalfields and placer deposits in Copper River study area, as well as specific locations of significant mineral resources. Data in this data set are compiled from USGS Bulletin 1786, DGGS Special Report 37

Key variables

COMMODS: deposit types using standard chemical element symbols Ag (silver), Au (gold), Cr (chromium), Cu (copper), Pb (lead) and also Coal

SYMBOL-SHAPE: symbol indicating type of operation/occurrence T = operating mine; D = past producer; C = deposit or occurrence

COLOR: color indicating commodity grouping