40t轴重矿石车
ore cars with the axle load of 40 t
八面山萤石矿床
Bamianshan fluorite deposit
Bamianshan flourite deposit
白石砬子白钨矿矿床
Baishilazi scheelite deposit
白云鄂博氧化矿石
Hematite ore from Bayan Obo
斑岩型钨矿石
porphyry pattern tungsten ore
宝石矿物学特征
gemmological and mineralogical characteristic
gemmological-mineralogical feature