liuskeinen
liuskeinen is a Finnish word that translates to "slaty" or "shaly" in English. It describes a rock or a material that exhibits properties similar to slate, particularly its tendency to split into thin, flat layers. This characteristic is a result of the rock's geological formation, typically involving sedimentary rocks that have been subjected to pressure and heat, leading to the development of parallel alignment of mineral grains.
The term liuskeinen can be applied to various types of rocks, including shale and phyllite, which are