IN THE MERAMEC RIVER
Unlike the lower stretches of river,
the upper Meramec river beds are mostly
rock and gravel -- crystal clean water, too.
These 3 specimens show the effect of erosion
and water on older rocks (limestone, jasper & granite.)
Note the quartz crystals formed in tiny geodes.
It's fun searching for minerals walking along
the river (Indian points and arrowheads, too.)