What does "fergusonite" mean?
Fergusonite: A mineral of a brownish black color, essentially a tantalo- niobate of yttrium, erbium, and cerium; -- so called after Robert Ferguson.
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17T00:00:00-07:00 · Modified: 2026-07-17T00:00:00-07:00