- Oregon’s volcanic sediments may contain one of America’s largest lithium reserves ever discovered
- Residents fear mining expansion could permanently damage fragile desert wildlife habitats nearby
- Mining companies will have hundreds of wells drilled across Oregon’s remote high desert terrain
Geologists have identified what could be one of the largest lithium deposits ever found in the United States beneath Oregon’s McDermitt Caldera.
Reports claim that the ancient volcanic sediments may contain between 20 and 40 million tons of lithium, with an estimated value of around $1.5 trillion.
The discovery could significantly boost America’s domestic supply of a metal important to building smartphones, electric vehicle batteries and renewable energy storage systems.
Lithium matters to American manufacturing
Global demand for lithium has skyrocketed due to the rapid transition towards cleaner transport and storage of renewable energy, and the metal’s light weight and excellent electrochemical properties make it irreplaceable in modern battery production for now.
A domestic source would reduce U.S. dependence on foreign supply chains, which could reduce geopolitical risks and trade vulnerabilities.
Malheur County is among Oregon’s poorest areas, and some residents hope new mining jobs could brighten the region’s economic outlook.
“This feature is 16 million years old, and we’re making decisions in a few years,” said Sammy Castonguay, a geologist at Treasure Valley Community College.
Her statement has sparked local debate about how quickly development can reshape the fragile high desert ecosystem, as the region supports pronghorn antelope, sage grouse and other sensitive species that could be displaced by large-scale mining.
The Oregon Chapter of the Sierra Club supports cleaner energy, but believes that drilling must not come at the expense of fragile habitats.
Tensions in economy and environmental protection
Proposals from mining companies seek to add roads and hundreds of wells to test for lithium in Malheur County.
The Bureau of Land Management once offered a short window for public comment, drawing criticism from groups that said it wasn’t enough time.
Tribal leaders have challenged previous proposals by pointing to sites sacred to ceremonies and important to traditional lifestyles.
“We need to do this the Oregon way — with full accountability and shared benefits,” said Greg Smith, Malheur County economic development director.
Lithium is hosted in volcanic-rich sediments that have been altered into lithium-rich claystone.
Unfortunately, treatment of claystone can require complex techniques, including acid leaching, raising issues of waste disposal and water safety.
Local communities want to ensure they are not left with the environmental mess once the initial excitement wears off.
The debate often centers on water needs for drilling and processing, as previous drilling in high desert areas has shown that the water table can be affected by large-scale operations.
Scientists believe there are better ways to extract the metal without destroying fragile desert ecosystems.
Advocates argue that these lithium-rich claystones represent a crucial resource in an era where every major automaker is transitioning to electric models.
The differences need to be settled soon, because lithium is worth $1.5 trillion, and that number will not wait for endless community meetings.
Via Earth.com
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