বক্সাইট এর সংকেত
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বক্সাইট এর সংকেত AI2O3
কেওলিন/চায়না/চিনামাটি (Al2O3. 2SiO2. 2H2O Al এর আকরিক।
বক্সাইটও (Al2O3. 2H2O) Al এর আকরিক।
কোরান্ডাম Al2O3