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titanium dioxide's rebel twin, born only when the planet really cranks up the heat

same recipeidentical formula to rutile and anatase, wildly different crystal
named forEnglish mineralogist Henry James Brooke, 1825
high-pressure kidforms in hot hydrothermal veins and metamorphic rock
rarest siblingleast common of titanium dioxide's three natural forms
orthorhombiccrystallizes in a different system than its twins
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