Bauxite
Part of Hall of Planet Earth.
All admission to the Museum is by timed-entry, and must be reserved online.
Part of Hall of Planet Earth.
Bauxite forms in tropical environments where warm groundwater leaches and dissolves nearly everything out of the rocks except for aluminum and silicon. This sample formed about 65 million years ago, when old granites were chemically weathered.
Provided by BAUXILUM Mining, Venezuela