摘要
硅化木本身是植物化石 ,同时兼有玉石的柔和光泽、温润石质、坚硬细腻等特点。云南硅化木在显微镜下能见到清晰木纹且微晶石英颗粒交代木质纤维的残余结构。经多种测试方法确定其化学成分主要为SiO2 ,并含有 1 0多种微量元素和氨基酸 ;矿物主要为石英。其密度为 2 57～ 2 64 g/cm3,摩氏硬度 6 4 0～ 6 81 ,折射率为 1 540 ,1 550。差热曲线在 579℃、 875℃吸热谷显示为相变点温度。硅化木可开发利用的品种及功能繁多 ,其前景在珠宝市场上日益见好。
Petrified wood is an ancient living plant fossil. It is characterizedby its soft and beautiful lust of jade, its gentle and noist natural constitution quality, its hardness and dainty and its clear wood lines. Under the microscope, its wood parallel remnent fibre structure can be seen. The structure is due to the microcrystalline quartz grains handing over the wood fiber. Through many methods to survey the petrified wood, Its main chemical ingredients are SiO 2 with more than ten kinds of trace elements. Its mineral is composed mainly of quartz. Its density is from 257 to 264 g/cm3, hardness is 640 to 681 and refraction rate is 1540 to 1550. By using analyzing its differential thermal curve picture, two absorbing valleys have been appeared when the temperatures were 579℃ and 875℃. At these temperatures, the quartz itself has been changed. There are many functions of silicified wood. Its future is better and better on the gem markets.
出处
《桂林工学院学报》
2001年第2期114-119,T001,共7页
Journal of Guilin University of Technology
基金
国家自然科学基金资助项目! (4 9472 0 98)
广西自然科学基金匹配项目! (95 170 19)
