Parisite-(La) is a hydrothermal, rare-earth element (REE) calcium carbonate discovered with other REE minerals, including bastnäsite-(La) and monazite-(La), in the Mula mine in Bahia, Brazil. Deposits of REE minerals are essential for the development of technology. Most high-tech devices, such as electric cars, cell phones, and LED screens, use rare-earth elements. Advanced analytical techniques, like market basket analysis, which uses known mineral locations to predict the location of new deposits, are making it much faster and easier to discover these critical materials. Type material is deposited in the mineralogical collections of the Museu de Ciência e Técnica, Escola de Minas, Universidade Federal de Ouro Preto, Praça Tiradentes, Centro, Brazil, and at the University of Arizona Mineral Museum, Tucson, AZ.