Summary: The suitability of monochromators for visual applications in petrographic mineralogy is discussed, and a new and inexpensive instrument employing a graded interference filter is described.
Mineralogical Magazine; June 1963 v. 33; no. 261; p. 512-516; DOI: 10.1180/minmag.1963.033.261.09
© 1963, The Mineralogical Society
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