Tourmaline

Complex borosilicate

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Tourmaline is a group of complex borosilicate minerals famous for their wide range of colors. Watermelon tourmaline shows pink centers with green rims. The most common variety, schorl (black), accounts for 95% of all tourmaline.

晶系	Trigonal
矿物分类	09 Silicates
莫氏硬度	7.0-7.5
比重	2.82-3.32
颜色	Black, green, pink, blue, watermelon
光泽	Vitreous
条痕色	Colorless
解理	None
断口	Conchoidal to uneven
透明度	Transparent
晶体习性	Prismatic with triangular cross-section