Impassable Rock — Rockhounding in Mendocino County, California

Impassable Rock is a mapped rockhounding spot in Mendocino County, California. Reported finds include rhodochrosite, inesite, bementite, neotocite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Mendocino County
State: California
Coordinates: 39.53627, -123.12162

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Found at Impassable Rock

Each chip links to all spots in the U.S. that produce that material.

Rhodochrosite
Inesite
Bementite
Neotocite

Nearby rockhounding spots

Other rockhounding spots within driving distance of Impassable Rock.

Impassable Rock FAQ

Where is Impassable Rock?+

Impassable Rock is in Mendocino County, California, at 39.53627, -123.12162.

What rocks and minerals can you find at Impassable Rock?+

Impassable Rock is reported to produce Rhodochrosite, Inesite, Bementite, Neotocite.

Is collecting allowed at Impassable Rock?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

How do I get to Impassable Rock?+

Open the directions link to navigate to 39.53627, -123.12162 in Google Maps. Some spots are remote — check road conditions before driving out.

More rockhounding in California

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Open Impassable Rock on the map

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