Rockhounding in Larimer County, Colorado

5 mapped rockhounding spots in Larimer County. Most commonly produces beryl, agate, allophane, aquamarine.

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Every rockhounding spot in Larimer County

Best spotCrystal MountainLarimer County, ColoradoPublic access · Beryl, Aquamarine, Fluorapatite +2
Specimen MountainLarimer County, ColoradoPermission required · Allophane, Calcite, Agate +2
Howes Gulch MinesLarimer County, ColoradoPermission required · Chalcopyrite, Gold, Pyrite +1
Wisdom RanchLarimer County, ColoradoPublic access · Beryl, Chrysoberyl, Garnet +1
Diamond PeakLarimer County, ColoradoPublic access · Diamond

Larimer County rockhounding photos

Representative spot and material photos from this county, shown where verified public image records are available.

1 photo

Green beryl crystals in pegmatite, like the beryl and aquamarine at Crystal Mountain — Crystal MountainLarimer County, Colorado

Minerals reported in Larimer County

Standout in Larimer County

Hand-picked spot in Larimer County, chosen for unusual mineralogy or documented public access. Each card opens the full coordinates and access notes.

Top pick
Crystal Mountain
Public access
Larimer County
The Crystal Mountain pegmatite district, mapped in USGS Bulletin 1011, contains beryl in roughly a quarter of its pegmatites, including aquamarine, alongside muscovite, fluorapatite, and bismutite.
Beryl, Aquamarine, Fluorapatite, Muscovite

Neighboring counties in Colorado

Adjacent rockhounding counties, ranked by how close their centroids sit to Larimer County. A natural extension if Larimer County is already on your trip plan.

Across the state line from Larimer County

Rockhounding counties in neighboring states within driving range. Geology rarely respects state borders. These are often the closest mapped spots you can reach without going deeper into Colorado.

Larimer County FAQ

Where can I rockhound in Larimer County, Colorado?+

RockHoundR tracks 5 rockhounding spots in Larimer County. Each entry below has coordinates, mineral notes, and access type. Always confirm local rules before collecting.

What rocks and minerals are common in Larimer County?+

Spots in Larimer County most often produce Beryl, Agate, Allophane, Aquamarine, Bismutite. Individual spots can vary widely.

Are these Larimer County rockhounding spots on public land?+

Most spots in this list are tagged public, but access can change with seasons, claims, and local closures. Always verify before driving out, links in the app open the right BLM, USFS, or county pages.

Plan a Larimer County rockhounding trip

Open RockHoundR to see these spots on the map alongside land overlays, weather, geology, and your saved finds.