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Mineral deposit areas
Areas where masses of naturally occurring mineral material are found, e.g. metal ores or nonmetallic minerals. [Adapted from Glossary of Geology, 4th ed.]
Alexandria Digital Library Feature Type Thesaurus
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Coal-bed gas resources of the Rocky Mountain region [New Window]
Summary of the technically recoverable coal-bed gas resources of the Rocky Mountain region.
Coal-mine-drainage projects in Pennsylvania [New Window]
Studies by the USGS documenting the extent of surface-water and ground water degradation associated with coal mining in Pennsylvania and the effects of mining and reclamation practices. Includes map of mine sites.
National Coal Resources Data System - US Coal Quality Database [New Window]
Searchable database, the COALQUAL database, presented here and in the USGS Open-file Report 97-134, is a subset of samples contained in the NCRDS (National Coal Resources Data System) database, and contains coal quality data on each sample.
National Coal Resources Data System - US Coal Resource Database (USGCOAL) [New Window]
Searchable database for locating information on coal resources by area, coalfield, coalbed, rank, quadrangle, source, years, or characteristics of thickness, overburden, and reliability.
National Geologic Map Database Catalog [New Window]
Search tool for locating print and online U.S. geologic maps by area, title, author, etc.


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