found: Work cat.: Perovskite : a structure of great interest to geophysics and materials science, 1988.
found: Fleischer, M. Gloss. mineral species, 1983:p. 127.
found: Strunz, H. Mineral tab., 1977:p. 45.
found: Hey, M. Index min. species, 1955:p. 45.
found: Encyclopedia Britanica, viewed March 25, 2019(Perovskite, calcium titanate mineral (CaTiO3) found as brilliant black cubes in many mafic igneous rocks, in their associated pegmatites, and in metamorphic contact zones. It also occurs in chlorite or talc schists)
found: Oxford Lexico website, June 8, 2021(perovskite 1. A yellow, brown, or black mineral consisting largely of calcium titanate. 1.1. Any of a group of related minerals and ceramics having the same crystal structure as perovskite.)
found: Perovskites - an overview, via ScienceDirect website, June 8, 2021(Perovskites are synthetic compounds that have an orthorhombic crystal structure identical to the naturally occurring mineral with the same name and that share a structurally similar chemical formula; Perovskite materials have emerged as the most promising and efficient low-cost energy materials for various optoelectronic and photonic device applications. The discovery of calcium titanate (CaTiO₃) in 1839 by a Russian mineralogist Perovski was considered to be the origin of perovskite, and materials with the same type of crystal structure as that of CaTiO3 were known as the perovskite materials (structure). The general chemical formula used to describe the perovskite materials is ABX₃, where A and B are cations with A larger than that of B and X is the anion usually oxides or halogens)