Meaning of petrosilex | Babel Free

Definitions

1. felsite
2. A fine-grained, silica-rich rock composed of quartz and sometimes other minerals, similar to the chemical structure of hornstone but having a different texture.

Equivalents

Examples

“Petrosilex has given rise⟳ to different .”

“The name⟳ simple petrosilex seems to have⟳ been confined to the more apparenttly homogeneous felsites, while the term porphyritic petrosilex was given to those rocks supposed to have⟳ a base⟳ of simple petrosilex or of felsparoid which held enclosed porphyritic crystals.”

“A brief history of the word felsite and its synonyms in different countries (petrosilex, eurite, and ha:lleflinta) will serve⟳ to illustrate⟳ the unfitness of it and these allied terms for exact petrographical usage.”

CEFR level