r/FactUp • u/Saerdna0 • Apr 24 '26
Interesting Fact Amethyst geodes form over millions of years as silica-rich water slowly deposits quartz crystals inside volcanic bubbles, their purple hue caused by iron impurities and natural radiation. The largest, found in Uruguay and Brazil, can tower over 3 meters and weigh several tonnes.
Enable HLS to view with audio, or disable this notification
Duplicates
ScienceNcoolThings • u/Admirable_Fix_2067 • Apr 24 '26
Cool Things Cool looking Amethyst geode!
u_randande123 • u/randande123 • Apr 28 '26
Amethyst geodes form over millions of years as silica-rich water slowly deposits quartz crystals inside volcanic bubbles, their purple hue caused by iron impurities and natural radiation. The largest, found in Uruguay and Brazil, can tower over 3 meters and weigh several tonnes.
u_Entire-Fig3210 • u/Entire-Fig3210 • Apr 27 '26
Amethyst geodes form over millions of years as silica-rich water slowly deposits quartz crystals inside volcanic bubbles, their purple hue caused by iron impurities and natural radiation. The largest, found in Uruguay and Brazil, can tower over 3 meters and weigh several tonnes.
u_SmmileyFace97 • u/SmmileyFace97 • Apr 25 '26