Lost California Treasure
LOST MINE Claim / Rule Check

The Lost Cement Mine

In 1857, two miners wandering lost in the Eastern Sierra discovered a vein of rich, red volcanic cement-like rock that was packed with pure gold. They chipped off a few pounds of the rock, showing it to others when they made it to town. In 1860, one of the miners died, but left.

The Lost Cement Mine
Historical documentation reference for The Lost Cement Mine in Near Mammoth Lakes, Mono County.

AI Summary & Quick Facts

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  • Target Name: The Lost Cement Mine
  • Registry Category: lost mine
  • Geographic Location: Near Mammoth Lakes, Mono County (Coordinates: 37.74290, -119.01130)
  • Land Status: National Forest (Allowed) (Classified as Claim / Rule Check)
  • Primary Historic Source: Legends of America - Lost Cement Gold Mine of Mammoth Mountain, California
  • Search & Usefulness Rating: Score 52/100 (Field Readiness: Claim Check First)
  • Summary Overview: In 1857, two miners wandering lost in the Eastern Sierra discovered a vein of rich, red volcanic cement-like rock that was packed with pure gold. They chipped off a few pounds of the rock, showing.

Historical Overview

In 1857, two miners wandering lost in the Eastern Sierra discovered a vein of rich, red volcanic cement-like rock that was packed with pure gold. They chipped off a few pounds of the rock, showing it to others when they made it to town. In 1860, one of the miners died, but left a map to the site to a friend. Famous figures, including Mark Twain and the legendary guide Gid Whiteman, searched extensively for the "red ledge" near the headwaters of the Owens River. Some believe it lies buried under a volcanic ash layer from more recent geological activity.

Field Search & Recovery Tips

Concentrate your efforts in the Devils Postpile / Mammoth Scenic Loop area. Look for outcrops of reddish volcanic tuff or cement-like conglomerates.

Field Action Checklist

1
Check BLM MLRS or county parcel maps for active claims, patented ground, and private inholdings.
2
Call the ranger district or field office for current closures, fire restrictions, and collecting rules.
3
Mark legal parking, turnaround points, and no-dig zones before leaving cell coverage.
4
Stay out of adits, shafts, and unstable hydraulic cuts; old mine workings can collapse without warning.

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Research Dossier
52
Usefulness Rating Medium Potential
Land Status Designation Claim / Rule Check

National Forest (Allowed)

Field Readiness Mode Claim Check First
Research Coordinates
37.74290, -119.01130

Recommended Outfitting

Rock Hammer Magnifying Loupe Topo Maps
Reference Work Citation

Legends of America - Lost Cement Gold Mine of Mammoth Mountain, California

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