CIPW classification

CIPW classification

[¦sē¦ī¦pē¦dəb·əl·yü ‚klas·ə·fə′kā·shən]

(petrology)

A designation for the Norm system of classifying igneous rocks; from the initial letters of the names of those who devised it: Cross, Iddings, Pirsson, and Washington.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.