Subject ASC0003tjg

The geological magazine, or, Monthly journal of geology.
n.s. decade 4, v. 1 (1894), Page 156 (1894)
Smithsonian Libraries
BHL Page 30749251

Keywords

Quarz quartz photograph polarize Quartz-grain Micaceous gneiss St. Gothard Tunnel Sand-grains Stapff F.M. The geological magazine Monthly journal of geology sand-grains Micaceous Gneiss quarts-grain microlithic Quartz grain

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