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.

결정계	Trigonal
광물 분류	09 Silicates
모스 경도	7.0-7.5
비중	2.82-3.32
색상	Black, green, pink, blue, watermelon
광택	Vitreous
조흔색	Colorless
벽개	None
단구	Conchoidal to uneven
투명도	Transparent
결정 습성	Prismatic with triangular cross-section