硅酸盐矿物(如云母和长石)的蚀变作用期间形成的一族粘土矿物，通常见于海相页岩内。
A group of clay minerals formed during the alteration of silicate minerals such as mica and feldspar and commonly found in Marine shales.
一种纹理清晰的变质岩，由石英、长石、云母和其他矿物组成，因侵入岩对沉积岩，特别是页岩的作用而形成。
A fine-grained metamorphic rock composed of quartz, feldspar, mica, and other minerals, formed by the action of intrusive rock upon sedimentary rock, especially shale.
地质和地球化学研究结果认为，铝土矿的成矿物质来源于下志留统韩家店群的水云母泥、页岩。
The geological and geochemical study results indicate that the metallogenetic materials came from the hydromica mudstones and shales of the Hanjiadian Group of Lower Silurian System.
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