Lead as impurity in RIG (rare earth irongarnet) Faraday rotators used for fibre optic communications systems.
在光纤通讯系统稀土铁石榴石法拉第旋转器中作为杂质的铅。
2
The variety of garnet includes almandine, pyrope, magnesium-irongarnet, manganese-aluminum garnet, andradite and calcium-chromium garnet.
石榴石的种类包括（铁铝榴石、镁铝榴石、镁铁榴石、锰铝榴石、钙铁榴石、钙铬榴石）。
3
The paper represents the experimental research results of the mineralogical and mineral processing technologies for the development and utilization of the calcium irongarnet resource.