Miv lub qhov muag pezzottaite

miv lub qhov muag pezzotite

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Miv lub qhov muag pezzottaite

Yuav cov gemstones hauv ntuj hauv peb lub khw


Miv lub qhov muag pezzottaite, kev lag luam hauv qab lub npe raspberyl lossis raspberry beryl. Nws yog hom tsiaj tshiab khiv. Kuv tau pom thawj zaug tau lees paub los ntawm International Mineralogical Association thaum Lub Cuaj Hli 2003. Pezzottaite yog ib qho khoom siv pob zeb ua ke ntawm beryl. Ib qho silicate ntawm cesium, kuj beryllium, lithium thiab txhuas. Nrog rau tshuaj khes mis Cs (Be2Li) Al2Si6O18. Npe hu ua tom qab Italian geologist thiab mineralogist Federico Pezzotta. Pezzottaite tau xub xav tias yog liab beryl. Los yog tshiab ntau yam ntawm beryl: cesium beryl. Tsis zoo li beryl tiag tiag, txawm li cas los xij, pezzottaite muaj lithium thiab crystallizes. Nws yog nyob rau hauv trigonal siv lead ua lub cev tsis yog los ntawm hexagonal system.

Xim muaj xim ntxoov ntxoo liab rau txiv kab ntxwv-liab thiab liab dawb. Rov qab los ntawm miarolitic kab noj nyob rau hauv granitic pegmatite teb ntawm Fianarantsoa xeev, yav qab teb Madagascar. Cov kaub phom pexottaite me me tsis muaj ntau tshaj li ntawm 7 cm / 2.8 hauv, nyob rau hauv lawv widest dimension thiab tabular los yog kev ncaj ncees hauv cwj pwm. Thiab ob peb ntawm tus naj npawb, feem ntau ua hnyav hnyav heev nrog kev loj hlob hlab ntsha thiab kua plaub. Kwv yees li 10 rau ib xees ntawm cov ntaub ntawv ntxhib yuav tau tawm tswv yim sib tham thaum muaj polished. Feem ntau cov paug gingerprint gems yog nyob rau hauv ib lub carat (200 mg) hauv qhov hnyav thiab tsis tshua tshaj 2 carats / 400 mg.

Miv lub qhov muag pezzottaite Kev Qhia Paub

Nrog rau kev zam ZOO 8 ntawm Mohs nplai. Lub cev thiab kho qhov muag ntawm pezzottaite piv txwv li Ib qho kev nqus ntawm 3.10, kev hloov qis dua 1.601 rau 1.620. Birefringence 0.008 rau 0.011 (uniaxial negative) yog tag nrho siab tshaj typical beryl. Pezzottiate yog brittle nrog ib tug conchoidal rau irregular puas, thiab streaks dawb. Ib yam li beryl, nws muaj ib qho tsis zoo rau kev ncaj ncees hla hauv paus. Pleochroism yog ntsis, los ntawm liab dawb txiv kab ntxwv los yog tseem purplish liab mus rau liab pinkish liab. Pezzottaite lub haum spectrum, raws li tau pom los ntawm ib txhais tes, kev ncaj kev ncaj qha, spectroscope, nta cov qhab ntawm 485-500 nm. Muaj qee yam uas qhia tias tsis muaj zog qis ntawm 465 thiab 477 nm thiab ib pawg qaug zog ntawm 550 rau 580 nm.

Feem ntau, yog tias tsis yog txhua yam, ntawm Madagascan cov nyiaj tso tawm txij thaum tau siv lawm. Pezzottaite tau pom nyob rau hauv tsawg kawg ib qhov chaw, Afghanistan: cov khoom no yog thawj zaug xav tias yuav cesium-nplua nuj morganite / liab dawb. Zoo li morganite thiab kuj muab kev pabcuam, pezzottaite ntseeg tias tshuav nws cov xim rau cov chaw ua haujlwm tawg paj yeeb vim nrog cov neeg tsis txaus siab tuaj. Pezzottaite yuav plam nws cov xim yog rhuab rau 450 ° C rau ob xuab moos. Tab sis cov xim yuav rov qab nrog gamma irradiation.

Miv lub qhov muag pom kev

Nyob rau hauv lub pov haum, sib tham, sib tham, los yog lub ntsej muag ntawm lub ntsej muag, yog qhov pom ntawm qhov kev xav pom tshwm 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.

Miv lub qhov muag pezzottaite los ntawm Madagascar


Yuav cov gemstones hauv ntuj hauv peb lub khw

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