"Felspathic" Quotes from Famous Books
 ... copper, iron, bismuth, and other minerals; the fourth and fifth cases (27, 28) to zoolitic substances; the sixth case (29) to various minerals including samples of jade or nephrite, of which the tortoise, in the first room of this gallery, is manufactured; and the seventh case (30) to felspathic substances, including amazon stone from the Urals, and Labrador felspar. The northern cases are numbered from 31 to 37. In the first case (31) are varieties of felspar; in the second case (32) are micaceous and other mineral substances; in the ...
— How to See the British Museum in Four Visits • W. Blanchard Jerrold
... consist entirely of coral rock; and although Darwin himself spent a few hours on St. Paul's rocks on his outward voyage in the Beagle, and believed he had found some portions of them to be of a "cherty," and others of a "felspathic" nature, this also has been shown to be erroneous, and the careful examination of the rocks by the Abbe Renard clearly proves them to be wholly of volcanic origin.[163] We have, therefore, at the present time, absolutely no exception ...
— Darwinism (1889) • Alfred Russel Wallace
... unconformably upon the Lower Laurentian, and attains a thickness of at least 10,000 feet. Like the preceding, it is wholly metamorphic, and is composed partly of masses of gneiss and quartzite; but it is especially distinguished by the possession of great beds of felspathic rock, consisting principally of ...
— The Ancient Life History of the Earth • Henry Alleyne Nicholson |
