Fountain Paint Pot Tour
Fountain Paint Pot is one of many mudpots found in
the park. In early summer the mudpots are thin and watery from
abundant rain and snow. By late summer they are quite thick. The
mud is composed of clay minerals and fine particles of silica. In
this area the rock is rhyolite, which is composed primarily of quartz
and feldspar. Acids in the steam and water break down the feldspar
into a clay mineral called kaolinite.