An exchange traded fund indexed to large-cap gold miners continued its downward spiral this week with a 7% loss on falling precious metal prices. Many investors appear to be throwing in the towel on the beleaguered sector.

Market Vectors Gold Miners (NYSEArca: GDX) touched a fresh 52-week low of $46 a share on Thursday and is on a six-week losing streak.

Market Vectors Junior Gold Miners (NYSEArca: GDXJ) was on track for a loss of more than 8% for the week. [Gold ETFs: Bullion or Mining Stocks?]

The gold miner ETFs followed bullion prices lower after the minutes from the latest Federal Reserve meeting triggered speculation the central bank won’t unveil more quantitative easing unless it sees evidence the economy is weakening.

GDX was down about 9% year to date heading into Thursday’s action, while the small-cap GDXJ slipped nearly 8%. They have been caught in a vicious downtrend since the beginning of March. [Gold Miner ETF Falls to 52-Week Low]

Investors have been waiting in vain for the sector to close the performance gap with gold. Gold miner ETFs have badly lagged bullion prices during gold’s historic rally.