Which mineral of biotite muscovite is easy to weather, and why?

The conclusion is that biotite is more easily weathered. As for the process, it may not be right. The crystallization sequence of biotite in the process of magma cooling is much earlier than that of muscovite, which means that the SiO2 _ 2 content of biotite is much less than that of muscovite, and the chemical bond strength of other components is not as good as that of silicon-oxygen bond, so biotite is more prone to weathering.