The metalurgraphic and electron microscopic inspection found that the black spot defects are formed by the oxidation of particle enrichedzone.
结果表明，该缺陷与强化相析出有关，金相与电镜观察证明，该区域是析出质点富集区经氧化形成的。
2
In ductile shear zone, the gold is migrated and enriched in deep fluid with silica and sulfide in forms of the complex driven by the chemical potential.
金矿质在韧性剪切带中与氧化硅和硫化物形成配合物在深部流体中沿着化学位梯度方向迁移和富集。
3
In the course of alteration, the unstable elements in supergene zone are leached out in quantity, but the stable ones are relatively enriched.