Ch. 27] 



MINERAL PRODUCTION STATISTICS 



491 



TABLE 2 (Continued) 



II. Chemical deposits 



A. Deposits formed by interaction of solutions (organic or 



inorganic processes) 



Calcareous marl $ 248,000 



Dolomite 



Basic magnesium carbonate 465,000 



Dead burned (dolomitic lime) 10,400,000 



Refractory uses 1,150,000 



Limestone 



Agricultural 32,500,000 



Building stone 5,840,000 



Flagging 44,000 



Riprap 2,050,000 



Fluxing stone 20,800,000 



Concrete and road metal 66,300,000 



Railroad ballast 6,080,000 



Miscellaneous (including crushed limestone used 

 for alkali works, fillers, glass, whiting, mineral 



food, etc.) 22,100,000 



Lime, quick and hydrated 40,600,000 



Oyster shells 357,000 



Iron ore (includes non-residual Clinton ores only) . . . 15,600,000 



Magnesite None 



Manganese ore None 



Phosphate rock_ 23,300,000 



Pyrite (coal brasses) 5,000 ??? 



Sulphur None 



Uranium None 



Vanadium X 



Copper None 



Silver None 



Diatomite 3,300,000 



Barite None 



Glauconite 425,000 



Coal (bituminous and lignite) 1,810,000,000 



Peat 1,010,000 



Total value of production from deposits formed by inter- 

 action of solutions $2,060,000,000 



B. Deposits formed by evaporation of solvents 



Borates (chiefly borax, kernite, colemanite, ulexite, 



priceite) $ 9,580,000 



Gypsum and anhydrite 12,400,000 



Salt 13,300,000 ?? 



Potash salts X 



Strontium minerals (celestite) 4,000 



