"Apatite" Quotes from Famous Books
 ... determined by Professor A. von Lasaulx, from specimens taken from the oldest (voraetnaeischen) sheets of lava down to those of the present day, indicates a rock of remarkable uniformity of composition, in which the components are plagioclase felspar, augite, olivine, magnetite, and sometimes apatite; but of leucite we have no trace.[9] In fact, the lavas of Etna are very much the same in composition as the ordinary basalts of the British Isles, while those of Vesuvius are of a different type. This seems to suggest an ...
— Volcanoes: Past and Present • Edward Hull |
