A theoretical or fictional mineral or rock type of enormous size or properties.
From 'giganto-' (giant) + '-lite' (from Greek lithos, meaning stone). A neologism combining geological terminology with the giant prefix, likely never standardized in actual mineralogy.
While not a real mineral, 'gigantolite' shows how geologists love building names—if you understand 'basalt,' 'granite,' and 'felsite,' you can guess what '-lite' always means!
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