Some of the bigger impairment charges came from First Majestic Silver and Osisko Gold, which wrote off $168m and $166m. This primary silver miner and gold-royalty company aren't even mid-tier gold miners. And the perpetually-troubled South African majors Gold Fields and Sibanye-Stillwater which have long tainted GDXJ reported big half-year losses implying $169m and $98m in Q4. These alone total $601m of losses.