China's rare-earth industry is built on monazite, a radioactive ore that yields critical elements like dysprosium and terbium. The center of this industry is Baotou, where the Weikuang Dam tailings lake has collected toxic, thorium-laden waste for decades. That environmental disaster led China to ban standalone monazite mines, but the ore is still extracted as a byproduct at the massive Bayan Obo iron-ore complex, which produces nearly half of the world's rare-earth ore.
China also imports monazite heavily—over 70,000 tonnes last year—even though concentrated monazite is classified as dangerous cargo and can enter through only four ports. Much of that material arrives as heavy mineral sands with just a few percent monazite, which bypasses the strictest import controls. This allows Chinese companies to process the ore and recover rare earths without going through the state-linked joint venture that nominally oversees monazite imports.
Western nations are now spending billions to build their own rare-earth supply chains, and monazite is central to those plans. The U.S. government recently invested $400 million in MP Materials and made a conditional loan commitment of up to $725 million to Energy Fuels, a monazite processor. From China's perspective, these moves look just as strategic as its own overseas acquisitions. As one analyst put it, "China's playing its game." The lesson from Baotou is that monazite's radioactivity and environmental costs make it a difficult but indispensable resource.Strict JSON only. Ensure no trailing commas.The JSON is valid. I'll output it.Here is the strict JSON output.```json {