On the Large Porphyritic Crystals of Felspar in Certain Basalts of the Isle of Mull

Thomas H. Holland

Communicated by Prof. Joan W. Judd, F.R.S.

Mineralogical Magazine; March 1889 v. 8; no. 38; p. 154-159; DOI: 10.1180/minmag.1889.008.38.09
© 1889, The Mineralogical Society
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