Relating to, composed of, or resembling granulite rock, especially describing rocks with a distinctive fine-grained texture formed under extreme pressure.
From 'granulite' plus the adjectival suffix '-ic,' following standard geological terminology conventions developed in the 19th century.
When geologists describe rocks as 'granulitic,' they're advertising that something incredible happened—extreme temperatures and pressures that would melt most rocks into liquid, but instead locked minerals into an ultra-compact structure.
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