Pyramid Lake Photos: S.E.M. calcium carbonate particle nucleation

Photo 1 - Scanning Electron Microscopy (SEM) images of calcium carbonate particles formed in a Pyramid Lake (PL) surface-water sample during nucleation experiments (Magnification bar shown on each figure). a Control experiment--nucleation in the absence of algae; bCalcium carbonate nucleation in a sample containing algae. (photo by Michael Reddy)