Miv lub qhov muag kornerupine

miv lub qhov muag kornerupine

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Gemstone Nqe Lus

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Miv lub qhov muag kornerupine

Miv lub qhov muag kornerupine tseem hu ua Prismatine. Nws yog ib qho tsis tshua muaj boro-silicate ntxhia nrog lub mis (Mg, Fe2 +) 4 (Al, Fe3 +) 6 (SiO4, BO4) 5 (O, OH) 2. Nws crystallizes nyob rau hauv orthorhombic - dipyramidal siv lead ua zog raws li xim av, ntsuab, thiab daj kom tsis muaj xim tsis muaj xim tourmaline xws li prisms los yog nyob rau hauv loj heev fibrous cov ntaub ntawv.
Ua ntej tshaj, Nws muaj ib qho kev nyuab siab ntawm 7. Lwm, ib qho kev nqus ntawm 3.3 rau 3.34. Tsis tas li ntawd, nws cov cim ntawm kev zais yog n = 1.660 - 1.671, nβ = 1.673 - 1.683 thiab nγ = 1.674 - 1.684.

Nws tshwm sim nyob rau hauv boron-nplua nuj volcanic thiab tseem cov pob zeb uas txo tau cov pob zeb uas tau ua nyob rau qib siab metamorphism. Peb kuj pom tau tias nws nyob rau hauv metamorphosed anorthosite complexes.
Kornerupine feem ntau pom muaj sapphirine, cordierite, spinel, corundum, tourmaline, grandidierite, dumortierite, kyanite, sillimanite, andalusite, biotite, phlogopite, magnetite, ilmenite, hematite, rutile.

Kornerupine yog ib qho tseem ceeb raws li lub pov haum thaum nws yog lub ntsiab lus ntsuab rau daj ntxoov. Lub emerald ntsuab ntau yam tshwj xeeb tshaj yog nrhiav tom qab. Nws ua tau ib txoj hauv kev nrog rau kev sib txuas nrog prismatine. Kom pleev xim heev, nws tshwm ntsuab los yog liab ploog liab thaum pom los ntawm ntau cov lus qhia. Nws muaj vitreous luster.

Nws tau xub piav nyob rau hauv 1884 rau qhov tshwm sim nyob rau hauv Fiskernæs nyob rau sab qab zog sab hnub poob Greenland. Lub npe kornerupine yog los ntawm cov kws geologist, Andreas Nikolaus Kornerup (1857-1883). Nws tsis yog kom txog thaum 1912 tias cov khoom pov thawj zoo tau pom. Nws tseem tsis tshua muaj rau hnub no.

Miv lub qhov muag pom kev

Nyob rau hauv lub pov haum, sib tham, sib tham, los yog kev sib tham hauv tus miv, yog qhov pom ntawm qhov kev xav pom hauv cov gemstones. Coined los ntawm Fabkis "oeil de chat", lub ntsiab lus "miv lub qhov muag", sib tham tshwm sim los ntawm lub qauv fibrous ntawm ib yam khoom, raws li nyob rau hauv miv lub qhov muag tourmaline, los ntawm fibrous inclusions los yog kab noj hniav tsis pub dhau lub pob zeb, raws li nyob rau hauv miv lub qhov muag chrysoberyl. Lub cev ceev ceev uas ua rau sib tham yog cov koob. Cov ntaub ntawv kuaj pom tau tsis muaj pov thawj ntawm cov hlab ntsha los yog cov fibers.The koob precipitates txhua align perpendicularly txoj cai rau miv lub qhov muag nyhuv. Lub lattice parameter ntawm koob yuav ntais tsuas yog ib qho ntawm peb txoj kab orthorhombic siv lead ua ntawm cov chrysoberyl, raws li ib qho kev sib haum xeeb raws li qhov kev coj no.

Cov phenomenon zoo li lub brilliance ntawm ib cov lus silk. Qhov luminous streak ntawm reflected teeb yog ib txwm perpendicular mus rau kev coj ntawm lub fibers. Rau lub gemstone los qhia cov nyhuv no zoo dua, cov duab yuav tsum yog ib tug cabochon. Hloov nrog rau lub hauv paus uas tsis paub, tsis yog lub ntsej muag, nrog cov fibers lossis fibrous cov khoom sib luag mus rau lub hauv paus ntawm lub tiav pob zeb. Qhov zoo tshaj plaws tiav nrws qhia ib zaug. Ib lub teeb ntawm lub teeb uas txav mus hla lub pob zeb thaum nws puv. Tshawb nrhiav lub pob zeb ntawm cov khoom qis me dua hauv cov khoom zoo li muaj qhov ntsej muag nrog cov xim daj ntseg. Faceted pob zeb tsis qhia cov nyhuv zoo.

Cat lub qhov muag kornerupine los ntawm khej

yuav natural gemstones hauv peb lub khw

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kev ua yuam kev: Cov ntsiab lus yog kev tiv thaiv !!