A magnesium aluminum phyllosilicate that occurs in a type of clay soil common to the Southeastern US. It is one of the types of fuller’s earth. Some smaller deposits of this mineral can be found in Mexico, where its use is tied to the manufacture of Maya blue in pre-Columbian times. Attapulgite is widely used […]
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Compound of aluminum and oxygen with the chemical formula Al2O3. Commonly called alumina, and may also be called aloxide, aloxite, or alundum depending on particular forms or applications. Al2O3 is significant in its use to produce aluminum metal, as an abrasive owing to its hardness, and as a refractory material owing to its high melting […]