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透射电子显微术的研究表明 ,美国内华达州卡林金矿中环绕黄铁矿大晶体的Fe的硫化物微晶乃是白铁矿。该白铁矿含Au和As,并在其中有纳米尺度的似带状区。相对于邻区而言 ,似带状区相对富As。因而提出 :似带状区还相对富晶格金。根据所得出的方解石中三价阳离子的分配系数方程认为 ,Au3+阳离子是在白铁矿的非平衡 (快速 )结晶作用期间 ,从白铁矿 -溶液界面上被结合到细粒白铁矿中去的。Au3+在白铁矿中的配分是由非平衡分布系数 (Kd’)所控制的。然而 ,由于Au3+的平衡分配系数 (Kd)小 ,故通过平衡 (缓慢 )结晶作用形成的黄铁矿并不将Au3+结合到晶体中去。早期形成的细粒晶体的再结晶作用则将把REE和Au从晶体中迁移走。相对于正常的白铁矿结构而言 ,较大的Au3+和Au+阳离子结合进入到白铁矿晶格中 ,可引起局部的结构畸变 ,从而表现为似带状的特征
Transmission electron microscopy studies have shown that the Carlin gold mine in Nevada, United States, surrounded by pyrite large crystals of Fe sulfide crystallites are white iron ore. The white iron ore contains Au and As and has nanoscale ribbon-like zones therein. Compared with the neighboring area, the ribbon-like area is relatively rich in As. It is proposed: the ribbon-like area is also relatively rich in lattice gold. According to the equation for the partition coefficient of trivalent cations in calcite, it is believed that the Au3 + cations are incorporated into fine-grained iron ore from the interface of the iron ore-solution during the unbalanced (rapid) crystallization of the lepidolite of. The distribution of Au3 + in the white iron ore is controlled by the non-equilibrium distribution coefficient (Kd ’). However, due to the small equilibrium partition coefficient (Kd) of Au3 +, pyrite formed by equilibrium (slow) crystallization does not incorporate Au3 + into the crystal. The early recrystallization of fine-grained crystals will remove REE and Au from the crystal. Relative to the normal structure of the white iron ore, larger Au3 + and Au + cations into the lattice of the white iron ore, can cause local structural distortion, which appeared to be ribbon-like features