彩色宝石与矿物集萃-彩色宝石与矿物集萃

2023-08-18 理论教育版权反馈

【摘要】：Benitoite蓝锥矿是一种罕见的钡钛硅酸盐矿物。于1907年首次在美国加利福尼亚州圣贝尼托矿区发现。起初被误认为是蓝宝石。蓝锥矿在蛇纹岩中与柱晶石和钠沸石伴生。六方晶系，晶体呈六方复三角锥状。蓝锥矿色散很强，为0.044，与钻石的色散值一样，因此火彩胜过蓝宝石。·蓝锥矿六方复三角锥状晶体Benitoite is a rare blue barium titanium silicate that fluoresces under UV light. Gem-quality crystals have strong dispersion, making it nearly as brilliant as diamonds. Benitoite was discovered in 1907 in San Benito mine, California, USA, and California is the only place where gem-quality benitoite can be found. It was therefore named the official state gem of California in 1985.

Benitoite

蓝锥矿是一种罕见的钡钛硅酸盐矿物。于1907年首次在美国加利福尼亚州圣贝尼托矿区发现。起初被误认为是蓝宝石。蓝锥矿在蛇纹岩中与柱晶石和钠沸石伴生。六方晶系，晶体呈六方复三角锥状。透明至微透明，玻璃至金刚光泽。有很强的多色性，从晶体的一侧可观察到蓝色，另一侧可观察到无色，甚至肉眼可见。颜色主要以蓝色为主，也有无色、灰白色、粉红色和紫色等。透明晶体可磨制成宝石，一般都很小，不超过1克拉，达到3克拉的极为罕见。蓝锥矿色散很强，为0.044，与钻石的色散值一样，因此火彩胜过蓝宝石。美国华盛顿史密森博物馆存有重7.8克拉的刻面宝石。产地除了美国之外，在比利时和日本也有发现。

·蓝锥矿六方复三角锥状晶体

Benitoite is a rare blue barium titanium silicate that fluoresces under UV light. Gem-quality crystals have strong dispersion, making it nearly as brilliant as diamonds. Benitoite was discovered in 1907 in San Benito mine, California, USA, and California is the only place where gem-quality benitoite can be found. It was therefore named the official state gem of California in 1985.

彩色宝石与矿物集萃-彩色宝石与矿物集萃

相关推荐