Terlinguaite
ā¦Terlinguaite Terlinguaite, collected from Mariposa Mine, Terlingua District, Brewster County, Texas, United States General Category Halide mineral Formula Hg4+3Hg2+Cl2O2 IMA symbol Tlg Strunz classification 3.DD.20 Crystal system Monoclinic Crystal class Prismatic (2/m) (same H-M symbol) Spaceā¦