Source
Rare-Earth Elements, chapter O of Critical Mineral Resources of the United States
Bradley S. Van Gosen, Philip L. Verplanck, Robert R. Seal II, Keith R. Long & Joseph Gambogi (2017). Rare-Earth Elements, chapter O of Critical Mineral Resources of the United States. U.S. Geological Survey. Version Professional Paper 1802–O. https://doi.org/10.3133/pp1802O Retrieved 2026-09-06.
- Authority tier
- Primary authority
- Type
- report
- DOI
- 10.3133/pp1802O
- Licence
- Public domain (work of the U.S. Government)
- Retrieved by Lithoen
- 2026-09-06
- Last re-checked
- 2026-09-06 (verified)
Known metadata gaps
Recorded explicitly rather than guessed.
- Lineage unresolved. This is explanatory writing that restates findings published elsewhere, and it names no sources Lithoen could follow. Every claim resting on it therefore has an unresolved evidentiary origin, and independence between it and any other source is UNKNOWN.