40 C.F.R. Table U-1 to Subpart U of Part 98
CO 2 Emission Factors for Common Carbonates
Cite as 40 C.F.R. Table U-1 to Subpart U of Part 98 (2026)
Mineral name—carbonate CO 2 emission factor (tons CO 2 /ton carbonate) Limestone—CaCO 3 0.43971 Magnesite—MgCO 3 0.52197 Dolomite—CaMg(CO 3 ) 2 0.47732 Siderite—FeCO 3 0.37987 Ankerite—Ca(Fe, Mg, Mn)(CO 3 ) 2 0.47572 Rhodochrosite—MnCO 3 0.38286 Sodium Carbonate/Soda Ash—Na 2 CO 3 0.41492