, On the Mohs hardness scale, zoisite and hornblende (or tschermakite) have hardnesses about about 6½, whereas corundum has a hardness of 9.
比如,黝帘和角(或者钙镁)摩氏硬度为6.5,而刚玉则达到9。
, On the Mohs hardness scale, zoisite and hornblende (or tschermakite) have hardnesses about about 6½, whereas corundum has a hardness of 9.
比如,黝帘和角(或者钙镁)摩氏硬度为6.5,而刚玉则达到9。
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