This document discusses the properties of rocks and includes the following information: - It describes different types of rocks based on their color, texture, structure, mineral composition and origin. There are three types based on color - leucocratic, mesocratic, and melanocratic. - Texture is described in terms of crystallization, grain size, crystal shape, and the mutual relations between grains. Different textures include panidiomorphic, hypidiomorphic, and felsitic. - Rock structures include flow structure, xenolith structure, stratification, and lamination. - The document also discusses igneous, sedimentary, and metamorphic rocks in terms of their formation and characteristics. Metamorphic