The mineral fibrous structure generated from chain structure of crystal is one of the three main types of the formation of natural mineral fibrous structures. As described in this book (see chapter “Thomson’s Law”), the chain structure refers to the strongest bonds being distributed along one-dimensional space, where atoms or coordination polyhedra are connected into one-dimensional chains and the chains are connected by weak bonds or fewer strong bonds. Restricted by the chain structure, the crystallization habits of minerals often present as acicular, radiating, hairlike, long prismatic, and other forms. Minerals of the pyroxene group and amphibole group are important components of chain silicate minerals. Many of their mineral species belong to rock-forming minerals and/or industrial minerals, which have significant research value in genetic mineralogy and development potential in industrial applications (Liu et al. 2015).