Gypsum deposits yog feem ntau sedimentary deposits, nrog reserves accounting rau ntau tshaj 90 feem pua ntawm lub teb chaws, thiab epigenetic thiab hydrothermal metasomatic gypsum deposits tsis tseem ceeb heev. Gypsum deposits yog tsim nyob rau hauv tag nrho cov hnub nyoog geological, thiab qhov tseem ceeb tshaj plaws yog cov Early Cretaceous thiab Tertiary sedimentary gypsum deposits.
Feem ntau cov khoom ntawm cov tshuaj deposition, feem ntau tsim loj ore txheej los yog lo ntsiab muag, tshwm sim nyob rau hauv limestone, liab shale thiab sandstone, marl thiab claystone series, feem ntau symbiotic nrog anhydrite thiab halite. Anhydrite txheej Nyob rau hauv qhov ze-nto, vim qhov txo qis ntawm sab nraud, nws hloov mus rau hauv gypsum los ntawm kev ua ntawm dej nto: CaSO4 ntxiv rau 2H2O —CaSO4·2H2O; Nyob rau tib lub sijhawm, qhov ntim nce li ntawm 30 feem pua, ua rau kev puas tsuaj ntawm gypsum txheej.
