A Simplified Method of 2 V Determination Using 3- and 4-Axis Stages

Ernest G. Ehlers
Department of Mineralogy, The Ohio State University, Columbus, Ohio

Summary: A method is presented for use with a 3- or 4-axis stage whereby a biaxial mineral, after being oriented into the cardinal position by means of the inner vertical, NS., and EW. axes, can be placed into an orientation suitable for measurement of the 2 V as required by the Berek method. A table of the necessary manipulations is given. The stereographic projection is only used to determine rotational corrections.

Mineralogical Magazine; September 1966 v. 35; no. 275; p. 958-962; DOI: 10.1180/minmag.1966.035.275.07
© 1966, The Mineralogical Society
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