指组成该矿床的有用矿物系原地形成的。即有用矿物形成后，其物质组成与周围共生矿物的相对位置未经外力的改变。如含金刚石的金伯利岩管即为原生矿床，而金刚石砂矿则是非原生的矿床。
影响环境的因素有：个旧原生矿床富含多金属硫化物，氧化后易生成酸；
Factors affecting environment include: Gejiu primary mineral is rich in multi-metal sulfide, which is easy to become acid as the result of oxidation.
根据砷酸盐矿物的组合类型可较快速地确定原生矿床(体)的工业类型和找矿方向。
They may help to define the industrial type of primary deposit and prospecting by the association type of arsenate minerals.
其成矿物质主要来源于矿区东北部的姑婆山与乌羊山花岗岩体及接触带的各类含锡原生矿床或矿化点，尤其与矽卡岩型锡石矿床关系最为密切。
Materials aer derived mainly fromGuposhan granite bodies in the northeast of the Sn deposit and their contactmetamorphic zone. Especially, they are closely related to the skarn cassteriteore deposit.
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