A STUDY ON THE STABILIZATION CONDITIONS OF CHALCANTHITE AND THE WAY FOR ITS PRESERVATION
Abstract:Chalcanthite, a H2O-bearing copper sulphate, often has a beautiful crystal and right color. Which is often destroyed after a short-time exposure to air. The main factor for its weathering is determined to be HUMIDITY. Chalcanthite is considered to be stable under a relative humidity(RH) in the range of 45%-65%. A sealed container with sellected CuSO4 liqiudbuffer which can maintain the humidity within this humidity range will be the paper way to pretect chalcanthite.