The plural of boehmite; multiple samples or forms of the aluminum oxide hydroxide mineral.
Simply the plural form of 'boehmite' (from Johann Böhm plus '-ite'). The regularized '-s' pluralization of the mineral name follows standard English conventions for creating plurals of countable nouns.
When geologists or miners talk about different boehmite samples or deposits, they use the plural form—each sample might have different crystal structures or impurities that make it scientifically interesting. This small '-s' represents how scientists precisely discuss variations within a mineral type.
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