About this location
The Lake Mountains, a low range on the west side of Utah Lake, made regional news in late 2025 for a major halloysite clay deposit — but that's now an active industrial mining lease, not a rockhounding stop. Ionic Minerals Technology's Silicon Ridge project has leased over 4,000 acres of Utah State Trust Land here to extract halloysite and rare-earth elements from the clay, feeding a processing plant already running in Provo. There's nothing here for casual collectors to dig.
Always seek permission where required, follow local laws, and practice Leave No Trace. Locations and details are community-submitted and may be inaccurate. Not sure what's legal here? Read our full guide to rockhounding laws by land type.
Found Here
Halloysite (and its older name, endellite — the two are now recognized as the same clay mineral family) forms the ore body, along with documented gallium, germanium, rubidium, cesium, scandium, lithium, vanadium, tungsten, and niobium in the same clay. UNVERIFIED: no source confirms olivine at this specific deposit, despite the DB's specimen list — olivine doesn't appear in any halloysite/Lake Mountains coverage found.
Difficulty
Getting there
Southern end of the Lake Mountains, Utah County, west of Utah Lake. UNVERIFIED exact public access point, since this is now an active leased mining operation.
Collecting here
Not applicable. This is an active industrial clay-mining lease, not a hand-collecting site.
Know before you go
The Silicon Ridge deposit sits on Utah State Trust Lands, leased to Ionic Minerals Technology — an initial 4,053-acre lease in 2023, with an additional 3,700 acres sought in 2024. It's a working mine feeding a 74,000-square-foot processing plant in Provo. Treat this listing as closed to rockhounding, regardless of what older general references to the Lake Mountains might suggest.
Location on Map
Coordinates: 40.20688, -111.93828
Nearby rockhounding locations
- Pelican Point — OnyxUT · 6.3 mi
- Traverse Mountains, Lehi — FossilUT · 14.3 mi
- Thorpe Hills — Azurite, MalachiteUT · 11.4 mi
- Fairfield — Chalcedony, ChertUT · 11.8 mi
- Wells Canyon — Calcite, QuartzUT · 12 mi
- Topliff Hill — Cerussite, MalachiteUT · 13.6 mi
Frequently asked questions
Can you collect rocks at Lake Mountain, Utah?
No. The documented halloysite/endellite deposit here (Silicon Ridge) is an active, leased industrial clay mine on Utah State Trust Land, not open to public collecting.
What is halloysite and why is it being mined at Lake Mountain, Utah?
Halloysite is an aluminum-silicon clay mineral used in EV battery manufacturing; the Lake Mountains deposit also carries gallium, germanium, and other critical and rare-earth elements.
Is there olivine at Lake Mountain, Utah?
Not confirmed by any source found — the documented deposit here is a halloysite clay body, not an olivine-bearing rock.
Who owns the land at Lake Mountain's mineral deposit?
The Utah State Trust Lands Administration, leased to Ionic Minerals Technology as of 2023.
⚠️ Always verify current regulations, weather conditions, and access requirements before visiting any location. Information provided is based on community submissions and may not be current or accurate.
Sources
- https://afcitizen.com/2025/12/18/why-a-new-mineral-find-near-utah-lake-is-drawing-national-attention/ — direct WebFetch; deposit location, lease details, minerals, processing plant.
- https://grist.org/energy/utah-mine-critical-minerals-rare-earths/ — via WebSearch; corroborating rare-earth/critical-mineral content.
- https://www.mindat.org/reference.php?id=522724 (Faust 1955, "The endellite-halloysite nomenclature") — via WebSearch; confirms endellite and halloysite are the same mineral family under different historical names.
Recommended Gear for Utah
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Southwest Treasure Hunter's Gem and Mineral Guide
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