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(一)矿石的基本特性该兰晶石矿系赋存于前震旦系的变质岩中。矿石呈块状构造,以柱状变晶结构为主,局部呈鳞片状变晶结构。主要的矿物有兰晶石和石英,另含少量的金红石和黄铁矿。兰晶石石英片岩型的矿石中,含有白云母和少量的黄铁矿,褐铁矿以及金红石。矿石中的含铝矿物,除兰晶石以外,还有白云母和黄玉。矿石的矿物成分以及化学组成列于表1和表2。
(A) the basic characteristics of ore The Lan Ling Shi department hosted in the former Sinian metamorphic rocks. Ore was massive structure, the main columnar crystal structure, local scale-like crystal structure. The main minerals are blue spar and quartz, the other with a small amount of rutile and pyrite. In the blue schist quartz schist type ore, it contains muscovite and a small amount of pyrite, limonite and rutile. Ore minerals in the ore, in addition to blue spar, there are muscovite and topaz. The mineral composition and chemical composition of the ores are shown in Tables 1 and 2.