There are no ages for Fibroferrite at Borate (Borate Camp), Pacific Mine (Pacific Coast Borax Company Properties; Borate; Borate Colemanite Mines; Calico; Old Borate; Pacific Coast Borax Co. Workings), Calico, Calico District (Daggett District; Calico-Daggett Area), Calico Mts (Calico Hills), San Bernardino Co., California, USA