X-Ray Diffraction (XRD): Identified the mineral composition and confirmed halite as the dominant phase. Raman Spectroscopy: ...

"In 99% of all cases, sinkholes pop up in carbonate rocks (like limestone or dolomite) or evaporitic rocks (like gypsum or anhydrite)," the science news website ZME Science says. Over the past 15 ...

The creator of an Attic vase showing the Greek goddess Cassiopeia used gypsum to create the white background, an unusual color for ancient Greek vases, which often had a red background. Credit: ...