** Canadian miner’s U.S.-listed shares down 3.4 pct at $6.26 premarket
** Company reports Q2 adj loss of 7 cents per share, bigger than analysts’ average estimate of a loss of 3 cents, as per Thomson Reuters I/B/E/S
** First Majestic has missed estimates for seven straight quarters
** Q2 results take a hit as company sells silver at $16.74 per ounce, lower than $17.17 last year
** Company also takes a one-time charge of $31.7 million in reported quarter
** Up to Friday’s close, U.S.-listed shares had fallen 3.9 pct this year, the Canadian stock has risen marginally vs a 3.7 pct decline in the S&P/TSX Global Mining index (Reporting by Anirban Paul in Bengaluru)