How to Use corundum in a Sentence

corundum

noun
  • The grains are made of corundum, the same mineral that forms ruby and sapphire on Earth.
    — Ryan Brennan, Kansas City Star, 27 Apr. 2026
  • Researchers identified corundum in three separate rocks along the crater rim.
    — Ryan Brennan, Miami Herald, 27 Apr. 2026
  • Ruby and sapphire mining began in the area in 1870, once rubies were discovered in the corundum mines.
    — Trudy Haywood Saunders, Travel + Leisure, 27 Jan. 2026
  • The difference between the two comes down to trace metals within the corundum, something scientists couldn’t confirm using imaging alone.
    — Ryan Brennan, Miami Herald, 27 Apr. 2026
  • According to New Scientist, the grains are made of corundum, the same mineral that forms rubies and sapphires on Earth.
    — Ryan Brennan, Miami Herald, 27 Apr. 2026
  • But on Mars, the corundum likely formed as a result of an asteroid impact in which aluminum in the asteroid rapidly fused with Martian minerals.
    — Adam Kovac, Scientific American, 12 May 2026
  • Researchers identified corundum in three separate rocks along the Jezero Crater rim, according to New Scientist.
    — Ryan Brennan, Kansas City Star, 27 Apr. 2026
  • These high-energy collisions would have generated intense heat and pressure, transforming aluminum-rich surface materials into corundum.
    — Ryan Brennan, Miami Herald, 27 Apr. 2026
  • Those high-energy collisions would have generated intense heat and pressure, transforming aluminum-rich surface materials into corundum.
    — Ryan Brennan april 27, Fort Worth Star-Telegram, 27 Apr. 2026
  • On Earth, corundum typically forms deep within the planet under specific geological conditions tied to tectonic activity.
    — Ryan Brennan, Kansas City Star, 27 Apr. 2026
  • Researchers believe meteorite impacts are the most likely explanation — high-energy collisions that would have generated intense heat and pressure, transforming aluminum-rich surface materials into corundum.
    — Ryan Brennan, Kansas City Star, 27 Apr. 2026
  • Like the corundum, however, the size of the opals found on Mars appear to be very small, says Vivian Sun, a planetary scientist at NASA’s Jet Propulsion Laboratory.
    — Adam Kovac, Scientific American, 12 May 2026

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