Dec 9 (Reuters) - Canada’s main stock index dipped on Wednesday, after six straight sessions of gains, as a 1% drop in gold prices dragged down miners. * At 9:36 a.m. ET (1436 GMT), the Toronto Stock Exchange’s S&P/TSX composite index was down 3.51 points, or 0.02%, at 17,635.49. (Reporting by Sruthi Shankar in Bengaluru; Editing by Amy Caren Daniel)