Tachhydrite

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Tachhydrite \Tach*hy"drite\, n. [Gr. tachy`s quick + "y`dwr
     water. So named from its ready deliquescence.] (Min.)
     A hydrous chloride of calcium and magnesium occurring in
     yellowish masses which rapidly deliquesce upon exposure. It
     is found in the salt mines at Stassfurt.
     [1913 Webster]