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Ripples of Calcite

Photo: White ripples of calcite folia in Lechuguilla Cave
These rare calcite deposits, which look a bit like shredded wheat, were found on walls deep within Lechuguilla Cave in Carlsbad Caverns National Park, New Mexico. Scientists think the rippled formations, known as folia, formed as water levels repeatedly rose and fell, leaving calcite deposits behind.
Photograph by Michael Nichols

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