Joseph W. Greig, 82, a retired research scientist with the Carnegie Institution here, died Oct. 22 at a nursing center in Lewistown, Pa.
He had retired in 1960, when he went to Pennsylvania State University to serve for three years as visiting professor of geochemistry. He lived in State College.
In 1963, the same year he retired from Penn State, Dr. Greig was recognized for his contributions to mineralogy and physical chemistry when a newly discovered mineral was named in his honor. A magnetic iron sulfide mineral, discovered in San Bernardino County, Calif., was named "greigite."
Dr. Greig joined the Carnegie Institution in the late 1920s, and did research in petrology at its geophysical laboratory.
His work there was interrupted from 1940 to 1944, when he served as national defense research consultant on wartime problems, including the proximity fuse, gun barrel erosion and high velocity projections.
He was the author of a number of published papers on geology and related fields.
Born in Ontario, Dr. Greig was a graduate of Queens University in Kingston, Ont., and did graduate work at Columbia University. He received a doctorate from Harvard University.
He served overseas with the Canadian Field Artillery during World War I.
He is survived by a daughter, Barbara, of Washington, and a brother, George K., of Calgary, Alberta.