On the Polysynthetic Structure of Some Porphyritic Quartz Crystals in a Quartz-Felsite

Major-General C. A. McMahon

Mineralogical Magazine; May 1888 v. 8; no. 36; p. 10-14; DOI: 10.1180/minmag.1888.008.36.02
© 1888, The Mineralogical Society
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