砖红壤中普遍存在有金,这是由于在砖红壤化过程中金的富集团子高所致。然而金的来源和富集机理可以各异,主要取决于各地具体的地质背景。本文研究讨论了巴西MatoGrosso州发育于Cuiaba群之上的砖红壤(图1)。该区的气候分为雨季和旱季。 Cuiaba群(Pεcb)前寒武纪变质岩构成了一个非常平坦而稳定的凹陷——Cuiaba凹陷。该凹陷东接Parana盆地的边缘、西接Serrana省(图2)。片理的主要构造走向为N40°E, The widespread presence of gold in the brick red soil is due to the sublimation of the gold-rich mass during the brick redification. However, the sources and enrichment mechanisms of gold can vary greatly depending on the specific geological context. This paper discusses brick red soil developed in the Cuiaba group in MatoGrosso, Brazil (Figure 1). The climate in the area is divided into the rainy season and the dry season. The Cuiaba Group (Pεcb) Precambrian metamorphic rocks form a very flat and stable depression, the Cuiaba depression. The depression east of the Parana basin edge, west of Serrana province (Figure 2). The main tectonic orientation of the strike is N40 ° E,