Chapter VI Geology and Mineralogy of the Mountain.114
Elie de Beaumont’s classification of the rocks of Etna.—Hoffman’s geological map.—Lyell’s researches.—The period of earliest eruption.—The Val del Bove.—Two craters of eruption.—Antiquity of Etna.—The lavas of Etna.— Labradorite.—Augite.—Olivine.—Analcime.—Titaniferous iron.—Mr. Rutley’s examination of Etna lavas under the microscope.