TSX ekes out gain on busy, mixed earnings day

By Alastair Sharp TORONTO (Reuters) - Canada's main stock index eked out a small gain on Thursday, helped by positive earnings surprises from Teck Resources and others, while disappointment over Potash Corp's dividend and outlook cut and other earnings misses weighed. The two materials stocks were emblematic of the mixed picture emerging from Canada's earnings season. Potash Corp fell 7.2 percent to C$20.95 after cutting its full-year profit forecast and dividend for a second time this year.