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硅硼镁铝矿(Grandidierite)为一罕见矿物.国外由M.A.Lacroix于1902年在马达加斯加花岗岩中首次发现,1918年在匈牙利又有发现,此后国内外一直未见报道.1985年笔者在对黑龙江鸡西三道沟矽线石矿床研究中,发现了硅硼镁铝矿.它产于麻山群斜长片麻岩内,与培长石、柱晶石、矽线石、电气石、石墨等共生,含量占7－8%.硅硼镁铝矿呈蓝绿色、长柱状,粒度0．1×0.2×0.8~0.5 ×1.0 × 4.omm.相对密度为3.016g/cm~3,摩氏硬度7.5.矿物难溶于盐酸、硫酸及氢氟酸.
Grandidierite is a rare mineral, which was first discovered by MALacroix in Madagascar granite in 1902 and again in Hungary in 1918. It has not been reported at home and abroad since 1985. In 1985, In the study of Sandaogou sillimanite deposit, Silicalite was found, which is produced in the plagioclase gneiss in the Mashan Group and is symbiotic with feldspar, spinel, sillimanite, tourmaline and graphite Accounting for 7-8%. Silicalite is blue-green, long columnar, particle size 0.1 × 0.2 × 0.8 ~ 0.5 × 1.0 × 4.omm. The relative density of 3.016g / cm ~ 3, Mohs hardness of 7.5. Mineral insoluble in hydrochloric acid, sulfuric acid and hydrofluoric acid.