The exsolution texture of the Au–Ag–Cu–Pt solid solution is represented by numerous lamellae of cupreous gold in the Ag–Au–Pd matrix. On average, the lamellae contain Au–87.1 wt %, Cu–10.3 wt %, Pd–1.8 wt %, and Ag–1.1 wt %, which corresponds to the Au3Cu mineral phase. We revealed for the first time that cupreous gold lamellae were selectively replaced by high-grade gold (98 wt % Au), with a very precise inheritance of the exsolution texture. The substitution occurred due to the impact of epigenetic solutions on native gold with the removal of relatively mobile components.

中文翻译：

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Au-Ag-Cu-Pd 析出结构中铜金的表观遗传改变

Au-Ag-Cu-Pt 固溶体的出溶结构由 Ag-Au-Pd 基质中的大量铜质金薄片代表。平均而言，薄片含有 Au–87.1 wt%、Cu–10.3 wt%、Pd–1.8 wt% 和 Ag–1.1 wt%，这对应于 Au3Cu 矿物相。我们首次揭示了铜质金薄片被高品位金（98 wt% Au）选择性取代，具有非常精确的出溶纹理继承。替代的发生是由于表观遗传解决方案对天然金的影响，去除了相对流动的成分。