Oct 18 (Reuters) - Canada’s main stock index slipped on Monday from record highs in the previous session, hit by weakness in mining stocks and dour economic data from China. At 9:32 a.m. ET (13:32 GMT), the Toronto Stock Exchange’s S&P/TSX composite index was down 54.63 points, or 0.26%, at 20,873.47. Reporting by Amal S in Bengaluru; Editing by Sriraj Kalluvila Our Standards: The Thomson Reuters Trust Principles.