NIOBITE
niobite, columbite
(noun) a black mineral that is an ore of niobium and tantalum
Source: WordNet® 3.1
Noun
niobite (countable and uncountable, plural niobites)
The mineral columbite.
Source: Wiktionary
Ni"o*bite, n. (Min.)
Definition: Same as Columbite.
Source: Webster’s Unabridged Dictionary 1913 Edition
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22 January 2025
MEGALITH
(noun) memorial consisting of a very large stone forming part of a prehistoric structure (especially in western Europe)
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