Pyrope garnet

pyrope garnet

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Pyrope garnet

Cov ntxhia pyrope yog ib tug tswv cuab ntawm pawg garnet. Nws yog tib tug tswv cuab ntawm garnet tsev neeg ib txwm tso saib lub ntsej muag xim liab hauv qhov kev sim ntuj, thiab nws yog los ntawm cov xeeb ceem no tias nws tau txais nws lub npe los ntawm Greek rau hluav taws thiab qhov muag. Txawm hais tias ua qhov tsawg dua li feem ntau cov garnets, nws yog cov pob zeb siv dav siv nrog ntau cov npe ntxiv, qee qhov uas yog qhov tsis zoo. Chrome pyrope, thiab Bohemian garnet yog ob qho kev xaiv npe.

Muaj pes tsawg leeg

Cov ntshiab pyrope yog Mg3Al2 (SiO4) 3, txawm hais tias feem ntau lwm cov khoom muaj nyob hauv tsawg kawg me me-cov ntsiab lus no suav nrog Ca, Cr, Fe thiab Mn. Lub pob zeb tsim cov khoom siv daws teeb meem nrog almandine thiab spessartine, uas sau suav nrog hu ua cov khoom lag luam pyralpite: pyrope, almandine thiab spessartineCov. Hlau thiab manganese hloov chaw rau cov hlau nplaum hauv cov qauv stione. Qhov tshwm sim, sib xyaw ua ke garnets yog txhais raws li lawv pyrope-almandine piv. Lub pob zeb semi-zoo nkauj tshooj rhodolite yog garnet ntawm 70% pyrope muaj pes tsawg leeg.

Keeb kwm

Lub hauv paus chiv keeb ntawm feem ntau pyrope yog nyob rau hauv pob zeb ultramafic, feem ntau peridotite los ntawm Ntiaj Teb lub mantle: cov mantle-derived peridotites tuaj yeem raug ntaus nqi ob qho tib si rau qhov ua tsis zoo thiab cov txheej txheem sib kis. Nws kuj tshwm sim hauv ultrahigh-siab lub pob zeb metamorphic, zoo li hauv Dora-Maira massif hauv sab hnub poob Alps. Hauv qhov ntawd massif, ze li cov ntshiab pyrope tshwm sim hauv cov khoom muaju rau yuav luag 12 cm inch; qee qhov pyrope muaj kev sib ntxiv ntawm coesite, thiab qee qhov muaj kev suav nrog enstatite thiab sapphirine.

Pyrope muaj ntau nyob rau hauv peridotite xenoliths los ntawm kimberlite kav dej, qee yam uas yog cov kabmob pob zeb-ua. Nws pom nyob rau hauv koom nrog pob zeb diamond feem ntau muaj Cr2O3 cov ntsiab lus ntawm 3 rau 8%, uas imparts qhov sib txawv violet rau sib sib zog nqus ntshav xim, feem ntau nrog lub pob ntsuab ntsuab, thiab vim tias qhov no feem ntau siv los ua kimberlite qhov taw qhia cov ntxhia hauv thaj chaw uas muaj kev ua haujlwm erosive. ua rau tus pin taw qhov keeb kwm ntawm lub yeeb nkab nyuaj. Cov hom no muaj npe hu ua chrome-pyrope, lossis G9 / G10 garnets.

Pyrope garnet cov cim

Hauv tes tshem me me, pyrope yog qhov nyuaj heev kom paub qhov txawv ntawm almandine, txawm li cas los xij, nws yog qhov yuav ua rau pom tsawg dua qhov khuam thiab kev suav nrog. Lwm qhov txawv qhov txawv yog teev nyob rau hauv lub rooj nyob ib sab. Kev saib xyuas yuav tsum tau ua thaum siv cov khoom no raws li ntau ntawm cov npe tau txiav txim siab los ntawm synthetically zus, ntshiab-muaj pes tsawg leeg pyrope. Lwm tus, xws li lub siab sib tsoo tshwj xeeb, tej zaum yuav tsis tshua muaj txiaj ntsig thaum kawm siv lub ntsej muag me me hauv kos rau hauv kev sib piv ntawm lwm cov tshuaj silicate. Hauv cov rooj plaub no, cov koom ua ntxhia nrog lwm cov mafic thiab ultramafic cov ntxhia yuav yog qhov qhia tau zoo tshaj plaws uas lub garnet koj tab tom kawm yog pyrope.

Hauv petrographic nyias ntu, qhov sib txawv ntawm cov yam ntxwv ntawm pyrope yog cov sib koom nrog lwm cov garnets: cov kev nyem siab thiab isotropy. Nws zoo li tsis tshua muaj xim zoo dua li lwm cov pob zeb hauv av silicate hauv cov ntu nyias, txawm hais tias pyrope yuav ua rau pom cov xim daj ntseg-daj yeeb hauv qhov dav hlau-lub teeb pom kev zoo. Cov tsis muaj qhov tsis muaj qhov tsis sib thooj, feem ntau ua rau lub tsev teev ntuj siv lead ua morphology, thiab cov koom haum hauv pob zeb hauv av yuav tsum tau siv rau hauv kev txheeb xyuas cov pyrope hauv qab lub tshuab tsom.

Pyrope garnet los ntawm Pailin, Qhab Meem teb

yuav ntuj pyrope garnet hauv peb lub khw

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