A rare blue-green mineral containing potassium, aluminum, and silicate, belonging to the feldspar or mica family.
From Greek 'glaukos' (bluish-gray) plus the mineral suffix '-lite' (stone). The name perfectly captures the mineral's characteristic blue-green crystalline appearance.
Despite having 'lite' at the end, which means stone, glaucolite is actually a relatively dense mineral—proving that mineral names don't always indicate physical properties!
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