felspathic
Americanadjective
Example Sentences
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The Wolf lighthouse is planted on a dangerous rock of felspathic porphyry some eight miles S.W. from the shore.
From Cornwall by S. (Sabine) Baring-Gould
Clay.—A yellowish-white, non-vitreous clay, product of the decomposition of granitic or felspathic rocks.
From Pottery, for Artists Craftsmen & Teachers by George J. Cox
The same felspathic rock seen in other parts of this great basin, seems the basis of the clay, although the fragments imbedded are very hard.
From Journal of an Expedition into the Interior of Tropical Australia by Thomas Mitchell
Ayrshire, and in the western parts of Devonshire, beds of felspathic porphyry, felstone and ash are interstratified with strata believed to be of Permian age.
From Volcanoes: Past and Present by Edward Hull
Clinkstone, called also phonolite, a felspathic rock of the trap family, usually fissile.
From Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology by Sir Charles Lyell
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