BRITANNICA LOG IN JOIN IN THE NEWS SPOTLIGHT LISTS SEARCH WHAT ARE YOU LOOKING FOR BROWSE POPULAR MARTIN LUTHER HARLEM RENAISSANCE OPEN DOOR POLICY MAHATMA GANDHI WORLD WAR II WRITTEN BY ENCYCLOPDIA LAST COMMON SULFATE MINERAL COMMERCIAL HYDRATED CALCIUM SULFATE 2H2O CRYSTALS MINERAL SELENITE FIBROUS MASSIVE VARIETY LUSTRE SATIN SPAR TRANSLUCENT OPALESCENT ORNAMENTS ALABASTER STATUARY PURE EARTHY SANDY HOUSTON MUSEUM OF NATURAL BEDS EVAPORITE MINERALS ANHYDRITE PARTICULARLY PERMIAN TRIASSIC SEDIMENTARY MEDIA GYPSUM PREVIOUS FACEBOOK TWITTER LINKEDIN PINTEREST CITATION HARVARD CHICAGO EMAIL EMAILED ERROR CONNECTED YOUTUBE INSTAGRAM NEWSLETTERS ABOUT US PARTNER PROGRAM CONTACT US PRIVACY POLICY TERMS OF USE IN THE NEWS LOGIN JOIN VIEW PAGE SUBJECT COMMENTS CANCEL SEND
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