Cheng Jinpei, member of the Chinese People's Political Consultative Conference, Deputy Minister of Science and Technology, and Academician of the Chinese Academy of Sciences pointed out that the chemical industry should cooperate with basic chemical r

On the afternoon of March 7, after chairing the group discussion meeting of the Fourth Session of the Tenth CPPCC National Committee, Cheng Jinpei, member of the National Committee of the Chinese People's Political Consultative Conference, Deputy Minister of Science and Technology, and member o

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Anhydrite

Ca[SO 4 ] [Chemical composition] The composition does not change much, and sometimes a small amount of Sr and Ba replaces Ca. [Crystal structure] orthorhombic system; a 0 =0.699 nm, b 0 =0.700 nm, c 0 =0.624 nm; Z=4. [Form] Crystals are rare. Usually, it is elongated along the a-axis or the c-ax

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