宝石及材料工艺学 专业英语.doc

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1、1、影响比重的因素：①Theheaviertheindividualatoms，②crystalstructure2、六大基本鉴定特征：①refractiveindex②singleordoublerefraction③pleochroism④selectivityoflightabsorption⑤specificgravity⑥characteristicinclusion.3、为什么说钻石独一无二：①Themostcostlygemstoneorasthehardestofallminerals，②hemostvaluablemate

2、rialofmoderntechnology③themostimportantevidencefortheconstitutionalandenvironmentalconditionsatthetimeofitsevolutioninthedepthsoftheearth,4、关于钻石：birthstoneofApril①Diamondistheonlypreciousstonewhichconsistsofasingleelement,namelyquadrivalentcarbonoccupiesthetopplaceontheMoh

3、shardnessscale②strongdispersive0.004③specificgravityonly3.52④Thecommonestgrowthhabitsaretheoctahedron,thecube,andtherhomb—dodecahedron⑤refractiveindexof2.425、钻石Ⅰ型和Ⅱ型的区别：6、钻石金刚光泽的原因：①Brillianceiscreatedbythecombinedeffectsofadamantineluster,②highrefractionoflight(diamondhas

4、arefractiveindexof2.42,③totalreflectionoftheraysreturnedfromtheinteriorofthecutstone,dazzlingfireofthelightemergingfromthestonedispersedintoitscomponentcolors7、钻石象征：epitomeofstrengthandcourage8、刚玉怎么命名：红色叫红宝石（July），其他颜色叫蓝宝石（September），但在命名时要把颜色放在前面，如绿色蓝宝石。9、刚玉绿色和蓝色的形成原因：①tr

5、ivalentironpredominatesinyellowandbrowncorundums,②whiledivalentironprevailsinbluesapphires.④Ingreensapphiresdivalentandtrivalentironprobablyoccurinequalamounts.10、祖母绿性质：hardness=7.5-8specificgravity(2.72)refractiveindex(1.58)vitreousluster,11、祖母绿绿色chrome粉色致色离子：Thesometimes

6、amazinglyintensepinkoriginatesfromtheraremetalcesium,reinforcedbymanganese.12、有关海蓝宝：①Theyouthfulblueofaquamarineisduetoatraceofdivalentiron.②13、怎样区别红宝石和红色石榴石：14、有关翠榴石：Therarepigmentchromiumrefractiveindedispersion(0.057)exceedingthatofdiamondsoextremelyrarethatitisfoundino

7、nlytwoplaces15、有关石榴石：birthstoneofJanuary16、月光石：birthstoneofJuneefractiveindex(1.52),17、水晶：indexofonly1.545specificgravityof2.65blacksmokyquartzamethyst紫晶citrine黄水晶1.六大晶系：Isometric(orcubic)—diamondandspinel2.Hexagonal—beryl(emeraldandaquamarine)andcorundum(rubyandsapphire)3

8、.Tetragonal—zircon4.Orthorhombic—topazandchrysoberyl5.Monoclinic—jadesandpreciousmoonston