Neptunite

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
A black silicate mineral with chemical formula KNa₂Li(Fe²⁺,Mn²⁺)₂Ti₂Si₈O₂₄ uncountable, usually

Etymology

From Neptune + -ite.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.