zoisite

1.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，是绿家族的一员，绿还有褐等。

2., On the Mohs hardness scale, zoisite and hornblende (or tschermakite) have hardnesses about about 6½, whereas corundum has a hardness of 9.

比如，和角闪（者钙镁闪）的摩氏硬度为6.5，而刚玉则达到9。