晶石

In this paper,the Raman spectrum were used to study sapphire,dichroite,aquamarinl,topaz and kyanite,it is found that the characteristic Raman translocations of sapphire which are caused by Al-O vibration are 413cm-1,640cm-1 and 668cm-1,the characteristic Raman translocations of dichroite which are caused by Si-O vibration are 550cm-1,662cm-1,964cm-1and 1176cm-1,the characteris.

本文通过对蓝宝石、堇青石、蓝色托帕石、海蓝宝石和蓝晶石的拉曼光谱进行测试与研究，得到蓝宝石具有由Al-O振动引起的特征拉曼位移413cm-1，640cm-1和668cm-1；堇青石具有由Si-O振动引起的特征拉曼位移550cm-1，662cm-1，964cm-1和1176cm-1；海蓝宝石具有由Si-O振动引起的特征拉曼位移678cm-1，1064cm-1，1232cm-1；蓝色托帕石具有由Si-O振动引起的特征拉曼位移844cm-1和924cm-1；蓝晶石具有由Si-O引起的特征拉曼位移933cm-1和1133cm-1。

Volcanic rocks contain plenty of mantle-derived xenoliths, including spinel lherzolites with subordinate wehrlite, dunite, olivine websterite, clinopyroxenite and garnet lherzolite , and few olivine, clinopyroxene and spinel xenocrysts.

火山岩中含有的地幔捕虏体类型主要有：尖晶石二辉橄榄岩、石榴石二辉橄榄岩、纯橄岩、异剥橄榄岩和单斜辉石岩；捕虏晶主要有橄榄石、单斜辉石和尖晶石。

Heat flows derived from garnet, chromite/chromium-spinel and pyroxene of xenoliths, xenocrysts in Mengyin and Fuxian kimberlites are higher than 40mW/m〓 calculated from the pyroxene inclusions in diamonds, and the range of pressure is 20～40kb (equivalent to 65～130km). Metasomatism (as indicated by yimengite and lindsleyite in Mengyin) is very strong in this depth range. Lherzolite, wehrlite, and diamond-free high-Ca harzburigite around the world are derived from this depth also. The observation suggests that the low-Ca harzburigitic environment for diamond stability had been changed significantly when the kimberlitic magmas erupted. This resulted from fluid interaction with harzburigite. The geotherm of the Cenozoic lithospheric mantle beneath Eastern-North China platform is higher than oceanic one. The temperature from the interior of the Tan-Lu faults is higher than that from apart off the fault.

除金刚石中的辉石温压投点落于40m W/m〓占地温线上外，捕虏体及捕虏晶中石榴石，铬尖晶石及单斜辉石的投点均偏离该地温线，显示较高的地温特点，而且捕虏体及捕虏晶的压力范围多在20-40kb(相当于65-130km)间，该深度范围内地幔的交代作用特别发育，如蒙阴大量发育的沂蒙矿、钛钾铬石等就发育于该深度范围，世界范围内不含金刚石的高钙方辉橄榄岩、二辉橄榄岩、异剥橄榄岩也分布于该区中，一方面表明捕虏体的主要取样位置已不在金刚石稳定区中，另一方面也表明金刚石稳定的橄榄岩环境，在金伯利岩侵位并捕虏他们时已发现了明显的改造，这种改造作用主要是通过长期的熔流体与先存的橄榄岩相互作用的结果。

The quality is a burnt magnesia spinel brick made from fused magnesia, low iron sintered magnesia and fused hercynite.This synthetic hercynite is a patent by RHI Refractories.

它由电熔镁砂、低铁烧结镁砂和电熔铁铝尖晶石制成的烧结镁铁尖晶石砖，这种人工合成的铁铝尖晶石是RHI奥镁公司的专利。

The upper part of lithospheric mantle in western Liaoning could be composed of the spinel harzbergite and minor spinel lherzolite.

辽西区岩石圈地幔的底部为含有弥漫型角闪石的尖晶石二辉橄榄岩；上地幔顶部为尖晶石方辉橄榄岩和少量尖晶石二辉橄榄岩；莫霍面附近为一岩石学上的过渡层，由一套辉石岩类的堆积体组成。

LREE depleted spinel lherzolite xenoliths are the 2%～15% partial melting residues of spinel lherzolite with 2 times REE concentration of chondrite. LREE enriched spinel lherzolite xenoliths are the prodiuct that 1% partial melting of garnet lherzolite derived melts mix in ratio of 2% with most LREE depleted spinel lherzolite.

轻稀土亏损的尖晶石二辉橄榄岩包体，是2倍球粒陨石稀土元素丰度的尖晶石二辉橄榄岩地幔经过2％～15％部分熔融后的残留体；而富集型尖晶石二辉橄榄岩包体可能为，来自深部石榴石二辉橄榄岩源区1％熔融形成的熔体以约2％的比例隐交代轻稀土元素最亏损的包体代表的幔源区后形成的。

Resources Engineering School,UST Beijing, Beijing100083, China）ABSTRACT The behaviour of kyanite decomposing into mullite and SiO2 in differenttemperatures, different medium conditions and different grain sizes was studied.

蓝晶石在不同环境中分解行为倪文刘风梅摘要研究了蓝晶石在不同温度、不同介质条件和不同粒度下转化为莫来石和SiO2的变化规律。

When the kyanite is contacting with amelt which produced in decomposing process, the decomposing temperature can besignificantly dicreased and the decomposing speed can be largely increased.

当介质中出现熔体时能够大幅度地进步蓝晶石的分解速度和降低分解温度。关键词蓝晶石；加热分解；莫来石

Our main product include cubic zirconia, synthetic ruby, synthetic sapphire, synthetic spinel, glass diamond, glass, jewel bearings, etc. At the same time, we produce and process natural gems like peridot, garnet, white topaz, rock crystal, amethyst, citrine, coral, tourmaline, etc.

主要生产加工石榴石、白黄玉、紫晶、黄晶、茶晶、电气石、橄榄石、蓝宝石、红宝石、珊瑚等天然宝石；同时，还生产加工立方氧化锆、红刚玉、蓝刚玉、尖晶石、玻璃水钻、及稀土玻璃等人造宝石产品。

There are common spinel group minerals with chemical substitution between the end members ; MgAl2O4, FeAl2O4, ZnAl2O4, MnAl2O4 and FeCr2O4.

这些尖晶石族矿物中，镁尖晶石可以形成宝石级的透明的晶体。如果含有锌，会变成深色，不过还叫做镁尖晶石。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。