It`s made from periclasite,magnesite aluminium spinel,chrome ore as raw material.

以方、尖晶、铬矿为主晶相的中性耐火制。

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

组成矿物除叶蛇纹和纤蛇纹外，有少量的白云、菱矿、透闪和橄榄等。