Charles Whitman Cross
... that in 1903, Charles Whitman Cross and three other geologists created a method of analyzing rocks known as the CIPW norm, elements of which are still in use today?
... that in 1903, <b id="mwC7M"><a href="./Charles_Whitman_Cross" id="mwC7Q" rel="mw:WikiLink" title="Charles Whitman Cross">Charles Whitman Cross</a></b> and three other <a href="./Geologist" id="mwC7U" rel="mw:WikiLink" title="Geologist">geologists</a> created a method of analyzing rocks known as the <a href="./Normative_mineralogy#CIPW_Norm" id="mwC7Y" rel="mw:WikiLink" title="Normative mineralogy">CIPW norm</a>, elements of which are still in use today?