BUZZ-First Majestic Silver Corp: Lower-than-expected Q2 profit
** Canadian silver miner's U.S.-listed shares down 4.7 pct at $10.42
** Company reports lower-than-expected Q2 adjusted profit as price realization on silver fell 11 pct on average
** First Majestic reports Q2 adjusted profit of 2 cents per share, below average analyst estimate of 6 cents per share
** Stock had risen more than 11 pct this year to Tuesday's close
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