角页岩 jiǎoyèyán hornfels Definitions Defs Origin Strokes Stroke Words Sentences Sents 角页岩 角頁岩 jiǎoyèyán hornfels A dark, fine-grained metamorphic rock formed by the contact of shale or siltstone with heat; commonly found near igneous intrusions and composed of minerals such as quartz, feldspar, and graphite.
角页岩 角頁岩 jiǎoyèyán hornfels A dark, fine-grained metamorphic rock formed by the contact of shale or siltstone with heat; commonly found near igneous intrusions and composed of minerals such as quartz, feldspar, and graphite.
