A complex crystalline silicate containing aluminum, boron, and other elements, used in electronic instrumentation and, especially in its green, clear, and blue varieties, as a gemstone.
The structure of polymeric ferric silicate sulfate containing boron (PFSSB) was analyzed by chemical titration, transmission electron microscope and IR spectroscope.
采用化学络合滴定、透射电镜、红外光谱等方法对含硼聚硅酸硫酸铁 （PFSSB）的结构进行了分析。
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Boron-rich silicate Formation include tourmaline-granulite, biotite-granulite, leptite and some other metamorphic rocks;