Facial coverings and timed-entry ticket reservations continue to be required for Museum entry. See Health and Safety.
Part of Hall of Planet Earth.
AMNH/R.Mickens
This coal contains metamorphosed organic matter (carbon) and brassy-colored iron sulfide minerals formed from decaying plants. The plants were buried in swamps and marshes to form peat, and latter converted to coal by heat and pressure resulting from deeper burial.
Donated by Pittsburgh Research Center, Bureau of Mines, Pittsburgh, Pennsylvania