水/岩相互作用对焦家金矿金成色的影响

胡换龙,范宏瑞

The Effect of Water/Rock Interaction for the Gold Fineness of Jiaojia Gold Deposit

Huanlong HU,Hongrui FAN

表2 矿物对平衡热力学计算化学反应式及平衡常数

Table 2 Chemical reaction equations and their equilibrium constant for the

编号 化学反应式 logK (1) Na(AlSi 3 )O 8 +K + =K(AlSi 3 )O 8 +Na + 0.995 (2) 3Na(AlSi 3 )O 8 +2H + +K + =KAl 2 (AlSi 3 )O 10 (OH) 2 +6SiO 2 +3Na + 10.563 (3) 3K(AlSi 3 )O 8 +2H + =KAl 2 (AlSi 3 )O 10 (OH) 2 +6SiO 2 +2K + 7.578 (4) 2KAl 2 (AlSi 3 )O 10 (OH) 2 _+2H + +3H 2 O=3Al 2 Si 2 O 5 (OH) 4 +2K + 3.462 (5) Na + +KAl 2 (AlSi 3 )O 10 (OH) 2 =NaAl 2 (AlSi 3 )O 10 (OH) 2 +K + -1.604 (6) 3Na(AlSi 3 )O 8 +2H + =NaAl 2 (AlSi 3 )O 10 (OH) 2 +6SiO 2 +2Na + 8.959 (7) 2NaAl 2 (AlSi 3 )O 10 (OH) 2 +2H + +3H 2 O=3Al 2 Si 2 O 5 (OH) 4 +2Na + 6.670