4D twin · seismic-tied
Mountain Pass
MP Materials · San Bernardino County, CA · site LTH-MOUNTAIN-PASS-CA
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1444 m NAVD88 · Vp low —— high
Ore–seismic crosswalk
Each shell is tied to the survey that would image it. Desk compilation from published USGS / industry methods — not the operator’s confidential cube. Not a reserve.
| Ore shell | Survey | Method | Year | Tie | Vp m/s |
|---|---|---|---|---|---|
| Sulphide Queen carbonatite | Carbonatite 2D | 2D reflection | 2014 | Ties the shell | 3200–6100 |
| Sulphide Queen carbonatite | Sulphide Queen CSAMT | CSAMT / AMT | 2016 | Structural offset | 2800–5800 |
PhD geological read
User-initiated. Grounded in MCS 2026, the mapped ore shells, and the seismic crosswalk. Not a reserve.
Sulphide Queen carbonatite. Bastnäsite-dominant light REE ore. Onsite separation expanding.
Capacity
Workforce500
Nameplate45,000 tpy
Utilization82%
Effective36,900 tpy
t / person-year90
Landform is site-typed: porphyry pit, block cave, underground vein/reef, Carlin, gravel, quarry. Seismic fences are Vp-banded.