Aluminum atoms are found in feldspars,which are a common mineral component of granite.Why then is granite NOT mined as an ore for aluminum? If not from granite,how do we obtain metals like aluminum?

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The Answer of Aluminum atoms are found in feldspars,which are a common mineral component of granite.Why then is granite NOT mined as an ore for aluminum? If not from granite,how do we obtain metals like aluminum?

Aluminum Atoms Are Found in Feldspars,which Are a Common Mineral