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            ______   ______    _    _     _____   
    ___    /_   _// |      \\ | || | ||  / ____|| 
   /   ||   -| ||-  |  --  // | || | || / //---`' 
  | [] ||   _| ||_  |  --  \\ | \\_/ || \ \\___   
   \__ ||  /_____// |______//  \____//   \_____|| 
    -|_||  `-----`  `------`    `---`     `----`  
     `-`

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Text this: Crystal chemistry of mimetite, Pb10(AsO4)6Cl1.48O0.26, and finnemanite, Pb10(AsO3)6Cl2