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铝土矿是一种在化学成分上富含Al2O3(w>40%),w(Al2O3)∶w(SiO2)≥2∶1,并主要由铝矿物(铝的氢氧化物)组成的沉积岩类,往往与较长期的沉积间断有关。我们在川东北河
Bauxite is a sedimentary rock that is chemically rich in Al2O3 (w> 40%), w (Al2O3): w (SiO2) ≧ 2: 1 and consists mainly of aluminum minerals (aluminum hydroxides) , Often associated with longer-term depositional discontinuities. We are in the river northeast of Sichuan