2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Cov xenoliths pom hauv kimberlite suav nrog pob zeb diamond, thiab feem ntau ntawm cov pob zeb diamond mined hauv ntiaj teb niaj hnub no yog pom hauv kimberlite ores. Raws nraim li cas kimberlites tau txais qhov tsim nyog buoyancy rau lawv ntev nce mus txog lub ntiaj teb lub crust, txawm li cas los, yog ib yam dab tsi ntawm ib tug paub tsis meej.
pob zeb diamond zoo li cas hauv kimberlite?
Kimberlite, tseem hu ua av xiav, xim tsaus, hnyav, feem ntau hloov pauv thiab brecciated (fragmented), intrusive igneous pob zeb uas muaj pob zeb diamond hauv nws cov pob zeb matrix. Nws muaj porphyritic kev ntxhib los mos, nrog loj, feem ntau rounded crystals(phenocrysts) ncig los ntawm cov nplua-grained matrix (groundmass).
Kev sib raug zoo ntawm kimberlite thiab pob zeb diamond yog dab tsi?
Kimberlite eruptions, ces, yog tsuas yog txoj kev uas pob zeb diamond ua lawv txoj kev los ntawm qhov tob hauv lub mantle mus rau lub ntiaj teb nto. Pob zeb diamond tsuas yog cov neeg caij tsheb, thiab kimberlites yog lawv thauj.
pob zeb diamond tsim li cas hauv cov kav dej kimberlite?
Mined diamonds that originate in the mantle are created thaum tshav kub thiab siab hloov carbon. Lub mantle yog ze li ntawm 100 mais hauv qab lub ntiaj teb saum npoo av, thiab lub pov haum uas tuaj ntawm lub mantle raug coj mus rau saum npoo los ntawm cov kav dej kimberlite, uas yog tsim los ntawm qhov tob ntawm qhov hluav taws kub tawg.
YYuav ua li cas cov zaub mov muaj nyob hauv kimberlite?
Garnet, chromite, ilmenite, chromium diopside, thiab olivinetshwm sim hauv kimberlites hauvntau ntau dua li pob zeb diamond. Raws li kimberlite qhov taw qhia cov zaub mov, lawv tau siv rau kev nrhiav pom pob zeb diamond, nrog rau kev ntsuas thawj zaug seb lub hom phiaj kimberlite yog pob zeb diamond-cov kabmob lossis tsis.
Pom zoo:
Puas yog pob zeb diamond txiv neej tsim?
Natural or real diamonds tau tsim nyob ib ncig ntawm 150km-200km hauv qab lub ntiaj teb crust tshaj 3 billion xyoo dhau los, thaum synthetic, lab-loj diamonds yog tsim los ntawm txiv neej. Nws siv kev tshawb fawb dav dav thiab ntau tus kws tshawb fawb los txhim kho lwm txoj hauv kev rau pob zeb diamond.
Pob zeb diamond puas tsim nyog?
Raws li kev lag luam ib leeg nkaus xwb kom tau nyiaj, kev yuav pob zeb diamond tsis yog kev nqis peev zoo. Tus nqi rov muag ntawm pob zeb diamond yog qhov tsawg dua nws tus nqi qub. Tus nqi ntawm pob zeb diamond hloov pauv hauv kev lag luam ib yam li lwm yam khoom zoo.
Nyob rau hauv cov pob zeb feldspar pob zeb hauv qhov twg?
Feldspars crystallize los ntawm magma raws li ob qho tib si intrusive thiab extrusive igneous pob zeb thiab tseem muaj nyob rau hauv ntau hom metamorphic pob zeb. Pob zeb tsim yuav luag tag nrho ntawm calcic calcic Raws li ib qho alkaline ntiaj teb hlau, calcium yog cov hlau reactive uas tsim cov txheej tsaus nti oxide-nitride thaum raug huab cua.
Yuav vvs pob zeb diamonds dhau pob zeb diamond tester?
Yes! Lab cog pob zeb diamond kuaj pom qhov zoo ntawmlub pob zeb diamond tester vim lawv tau ua los ntawm cov roj carbon crystallized, ib yam li pob zeb diamond mined. Txawm hais tias, vim qee qhov HPHT pob zeb diamond tuaj yeem nqa cov impurities (txawm tias tsis pom qhov muag liab qab), muaj lub caij nyoog lawv tuaj yeem sim ua moissanite lossis tsis yog pob zeb diamond.
Kuv puas tuaj yeem nkag mus rau hauv pob zeb pob zeb nrog 3.0 gpa?
GPA dab tsi koj xav tau kom nkag mus rau hauv Stony Brook University? Cov neeg thov yuav tsum tau qhab nia zoo tshwj xeeb kom nkag mus rau hauv SUNY Stony Brook. Qhov nruab nrab tsev kawm ntawv theem siab GPA ntawm cov chav kawm freshman nkag hauv Stony Brook University yog 3.
