查询词典 labradorite

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As a result, if the iridescence is produced by thin-film interference, not only the thickness of lamellar structure must be defined within a certain nanometer, but also the refractive index need to be different between lamellar structure. In other words, the chemical composition, refractive index and thickness of exsolution lamellae need form to trinity, such as labradorite, albite, andradite and orthoamphibole. If the iridescent color is produced by grating-diffraction, the lamellar structure just needs to be arrayed regularly, the spacing of the edges of lamellar structure needs to be regular and narrow, but not necessarily within the range of the wavelength of visible light, such as shell of abalone, pearl and opal.

薄膜干涉式晕彩不仅要求宝石内部结构层的厚度必须在一定的纳米范围内，而且结构层内部的折射率也必须有所差别，也即，当结构层由两相组分出溶而成，其化学成分、折射率和结构层厚度形成三位一体时，符合薄膜干涉式晕彩，如拉长石、钠长石、石榴石和角闪石；而光栅式衍射晕彩则仅要求结构层排列规则，边缘狭窄但不需要窄到可见光波长范围内，能使入射光的振幅或位相，或两者同时产生周期性空间调制的结构即可，如鲍贝壳、珍珠和欧泊。

The result indicated that inner exsolution lamellar structure of labradorite causes interference that contributes to the iridescent colors.

研究结果显示：拉长石的晕彩色是因其内部的层状出溶结构对光的干涉所致，当结构层厚度处于128~292nm之间时出现可见光范围内的干涉色。

In this variety of labradorite feldspar, the sheen is a variety of rainbow hues, from pink to yellow, to peach, purple, and blue.

这个品种石晕的光泽，是多种色彩的彩虹，从粉红至黄色，以桃、紫、蓝。

But it is determined that the relationship between iridescence and calcic content of labradorite is positive during the same place. Based on the research of labradorit's composition and structure, this paper reviews the latest researches of other iridescent gems.

在本次晕彩拉长石成分和结构研究成果的基础上，并综合其它各种晕彩宝石的晕彩成因的最新研究进展，初步归纳了宝石晕彩效应的成因机理如下：宝石晕彩效应产生的两种光学模型为薄膜干涉式和光栅式衍射式。

Labradorite which is a plagioclase feldspar of the triclinic class is well known for the striking iridescence which it exhibits. What is the material which is responsible for the iridescence of labradorite and why is it present?

上世纪七、八十年代，拉长石的晕彩成因引起了人们的广泛关注，普遍认为拉长石的晕彩色并非因其晶体内部的杂质或包裹体所致，更可能是因拉长石内部的周期性层状结构对光的干涉作用所致。

Which one is responsible for the iridescence is not clearly until now. To understand the origin and distributed characteristics of iridescence in labradorite, microscope, XRD, EPMA, SEM, TEM, STEM and SAED have been taken in the paper.

作者在前人研究的基础上，运用偏光显微镜、电子探针、X射线衍射、扫描电镜、透射电镜等测试手段，对无晕彩拉长石和有晕彩拉长石在成分和结构上进行了详细深入的对比研究。

Faceted roundels--including garnet, citrine, peridot, labradorite, carnelian, and amethyst--are separated by 14 karat yellow gold bead spacers to create this colorful 16-inch chain.

包括石榴石，黄水晶，橄榄石，拉长石，玛瑙，紫水晶和-刻面圆形分隔一四克拉黄金珠间隔创建这个丰富多彩的16英寸链。

Industrial Minerals; Barite; Calcite; Coal; Fluorite; Limestone; Talc; Pyrophyllite; Serpentine; Sylvite; Labradorite

关键词：工业矿物；重晶石；方解石；煤；氟石；石灰石；云母；叶蜡石；蛇纹石；钾盐；闪长石

The glossary provides information relating to commonly occurring industrial minerals such as Barite, Calcite,Coal,Fluorite,Limestone,Talc,Pyrophyllite,Serpentine,Sylvite,Labradorite,and gives details of some common mineral assemblages.

网站提供了由纽芬兰岛与拉布拉多地质勘测局在本地区发现的一些工业矿物，网站共介绍了以下十种工业矿物：重晶石、方解石、煤、氟石、石灰石、云母、叶蜡石、蛇纹石、钾盐、闪长石等。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。