structure determination using two-dimensional single-crystal neutron diffraction, and suggested that the hydrogen atom in the symmetric (HC2O6)3− anion is disordered. The environment of the disordered H atom was later investigated by Choi and Mighell (1982) at 300 K with three-dimensional single-crystal neutron diffraction: they concluded that the H atom is dynamically disordered between two equivalent sites, separated from one another by 0.211(9) Å. The dynamically disordered H atom was reinvestigated at low temperature by O'Bannon et al. 2014 and they concluded that it does not order at temperatures as low as 100K. Uses of trona Trona is a common source of soda ash, which is a significant economic commodity because of its applications in manufacturing glass, chemicals, paper, detergents, and textiles. It is used to condition water. It is used to remove sulfur from both flue gases and lignite coals.Sutcu H., and Eker Y. (2013) The removal of sulfur from Dursunbey and Iskilip lignites in Turkey, using natural trona: 1. The effect of the thermal method. Energy Sources Part A-Recovery Utilization and Environmental Effects, 35, 83–91. It is a product of carbon sequestration of flue gases. It is also used as a food additive.Nielsen, J.M. (1999) East African magadi (trona): Fluoride concentration and mineralogical concentration. Journal of African Earth Sciences, 29, 423–428. Mining operations Rio Tinto – Owens Lake Magadi Soda Company Searles Valley Minerals Inc. Solvay Tata Chemicals Genesis Alkali formerly Tronox Alkali formerly FMC Corporation General Chemical Ciner Wyoming formerly OCI Chemical Corp.'' ANSAC Eti Soda, Turkey Kazan Soda Elektrik, Turkey Church & Dwight - Green River Mine Intrepid Potash Simplot See also Natron Nahcolite Shortite Sodium sesquicarbonate Thermonatrite References Sodium minerals Carbonate minerals Monoclinic minerals Minerals in space group 15 Evaporite Luminescent minerals