Sometimes, a specific metal is an inherent part of a mineral's structure, so the mineral always takes on that color.

有时，某种特殊金属元素是该矿物结构的固有组成部分，所以这种矿物常带有这种颜色。

His group, the Salt Flats Racing Association, believes the potash mining company that takes minerals from the flats is the main reason for the aquifer decline.

他所在的组织“盐滩赛车协会”认为，从盐滩中开采矿物的钾矿开采公司是含水层下降的主要原因。