| 释义 |
propylite Lithol.|ˈprɒpɪlaɪt|
[f. Gr. πρόπυλ-ον (see propylon) + -ite1. So named by Richthofen 1867 as opening the Tertiary volcanic epoch.]
A volcanic rock occurring in and considered to be characteristic of various silver-mining regions; also called greenstone trachyte.
Believed to be a product of the metamorphism which accompanied the formation of the metalliferous deposits.
1867Richthofen in Mem. Calif. Acad. Sci. I. ii. Propylite. 1877Raymond Statist. Mines 167 Propylite. 1879Rutley Stud. Rocks xii. 237 Propylites also occur in Transylvania and Hungary. 1889Q. Jrnl. Geol. Soc. XLV. 201, I hope shortly to be able to describe some of the chief types of these rocks,..their altered forms (the ‘propylites’), and their Plutonic representatives (diorites and quartz-diorites).
Hence propyˈlitic a., pertaining to propylite.
1889Quart. Jrnl. Geol. Soc. XLV. 179 These rocks..exhibiting interesting examples of the so-called propylitic modification. |