黄土粒度粗，不稳定重矿物含量高，表明西宁黄土区距黄土物源近。
The grain size of the loess is coarse with high contents of unstable minerals, indicating that the Xining loess material source approximate to the loess region.
长石的钠长石化作用和长石、岩屑的水化水解作用、溶解作用，导致了不稳定组分的转变以及大量离子游离于孔隙水中，同时导致大量的自生矿物沉淀。
The hydration-hydrolysis and dissolution rock fragments and feldspar and albitization of feldspar make many ions free from their framework and go into pore-water.
与此产物对应的天然矿物是自然界很少见且很不稳定的五水碳镁石。
The natural mineral corresponding with MgCO_3·5H_2O is known as lansfordite, which is unstable and rarely found in nature.
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