The ores with different weathering degree have different characteristics in mineralogy and chemical composition. Therefore, they can be quantitatively distinguished according to the chemical analysis.

不同风化程度的矿石有不同的矿物学和化学组分特征，因而可以根据化学分析结果作定量判别。

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The pelitic mineralogy of the magnetite gneiss and presence of detrital zircon demonstrate that the protoliths were not a pure chemical sediment.

磁铁矿片麻岩的泥质矿物特征和碎屑锆石的存在表明，原岩不是一个纯化学沉积体。

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Although APXS and ChemCam will tell you which chemical elements are present, they don't tell you how precisely those atoms are arranged into the crystalline structures that make up the rock, and both this mineralogy and the chemical composition are ideally needed to assign a rock name.

BBC: Cosmic coincidence on the road to Glenelg

From the chemical composition, you have to work out the most likely mineralogy.

BBC: Cosmic coincidence on the road to Glenelg