The three most important varieties are chrysotile, crocidolite and amosite.

三种最品种是温石棉，青石棉和铁石棉。

The strengths decrease in order crocidolite chrysotile, amosite.

强度青石棉，温石棉，铁石棉顺序下降。

Sometimes the composition mineral besides the antigorite and the chrysotile, contains the few dolomite, the magnesite, the tremolite and the olivine and so on.

组成叶蛇纹石和纤蛇纹石外，有时含少量白云石、菱镁、透闪石和橄榄石等。