| These are actually pseudomorphs of sericite after cordierite and are found included in hornfels or slate as a product of contact metamorphism. |
| For scheelite-dominated deposits, there is the formation of marbles and locally extensive tremolite, silicification, and the development of extensive skarn and hornfels zones. |
| The slate, where thermally metamorphosed, has been turned into siliceous hornfels and mica schist. |
| Fine grained sedimentary rocks were transformed into hornfels and minerals such as amphibole, pyroxene. |
| The hornfels can be very friable, as are the sakura ishi, which makes it easy to find nice crystal sections but difficult to collect matrix specimens. |
| From diabases, basalts, andesites and other igneous rocks a third type of hornfels is produced. |
