Petrographically and mineralogically similar rocks quite often have different concentrations of radioactive elements. 岩石学矿物学上类似的岩石，其放射性元素丰度却往往有所不同。
Mineralogically, zoisite is a member of the epidote group, the other members of which are clinozoisite, epidote pe rse, piemontite, and allanite. 从矿物学上讲，黝帘石是绿帘石家族的一员，绿帘石还有褐帘石等。
