fire obsidian

English

Noun

fire obsidian (countable and uncountable, plural fire obsidians)

  1. (mineralogy) A rare variety of relatively clear volcanic glass that produces a vibrant color-reflectance caused by the inclusions of magnetite nanoparticles.
This article is issued from Wiktionary. The text is available under Creative Commons Attribution-Share Alike 4.0 unless otherwise noted. Additional terms may apply for the media files.