class name for salic/femic ratio 0.60 to 0.14 is
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Said of certain light-colored silicon- or aluminum-rich minerals present in the norm of igneous rocks; e.g., quartz, feldspar, felspathoid. Also, applied to rocks having one or more of these minerals as major components of the norm. Etymol: a mnemonic term derived from 's'ilicon + 'al'uminum + 'ic.
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