Rhyolite Ridge Project
Ioneer is advancing the Rhyolite Ridge Lithium-Boron Project in Esmeralda County in Nevada and is fully-funded to a Final Investment Decision.
The Definitive Feasibility Study is modelled on a 26 year mine life – though there is significant potential for this to increase.
It is one of two advanced lithium projects in the U.S. and is expected to be a low cost lithium producer, in part due to the valuable boron co-product.
Location

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25km west of Albemarle’s Silver Peak lithium mine
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330km southeast of the Tesla Gigafactory near Reno
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530km north of Los Angeles
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In Esmeralda County – the most sparsely populated county in Nevada
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On Federal (Bureau of Land Management) land at an altitude of approximately 1,800m
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In uninhabited semi-arid desert with annual rainfall averaging 10mm.
Advancement Highlights


Company History
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Our Partner

Sibanye-Stillwater is listed on the New York Stock Exchange and Johannesburg Stock Exchange and has a market capitalisation of U.S.$10 billion.
It is one of the world’s largest primary producers of platinum, palladium and rhodium, and is also a top tier gold producer, ranking third globally on a gold equivalent basis.
We are extremely pleased to have welcomed Sibanye-Stillwater, a leading international mining company, as a strategic partner in the Rhyolite Ridge Project.
Sibanye-Stillwater is an excellent partner for Ioneer to jointly realize the promise of Rhyolite Ridge thanks to:
- Its proven track record of developing and operating major mining projects including three integrated facilities in Montana
- Its commitment to developing and maintaining an inclusive and sustainable culture, and
- Its determination to become a major force in the battery materials supply chain.