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Webster 1913 Edition
Tachhydrite
Tach-hy′drite
,Noun.
[Gr.
ταχύσ
quick + ὕδωρ
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
.