ACF diagram
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ACF diagram
(′ā′sē′ef ′dī·ə′gram)
(petrology) A triangular diagram showing the chemical character of a metamorphic rock; the three components plotted are A =Al2O3 + Fe2O3 - (Na2O + K2O), C= CaO, F = FeO + MgO + MnO.
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McGraw-Hill Science & Technology Dictionary
McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.
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