neptunite

English

Neptunite crystals

Etymology

Neptune +‎ -ite

Noun

neptunite (usually uncountable, plural neptunites)

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

Further reading

  • “Neptunite” in David Barthelmy, Webmineral Mineralogy Database, 1997–.
  • neptunite mindat.org‎, Hudson Institute of Mineralogy, accessed 29 August 2016
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