Yuav ua li cas cov qauv thiab xim ntawm granite tau tsim?

Hauv tib neeg lub neej, granite tau dhau los ua cov khoom siv kho kom zoo nkauj sab hauv tsev thiab sab nraum zoov vim nws cov xim ci ntsa iab, cov tshuaj lom neeg ruaj khov thiab cov khoom zoo nkauj thiab lub cev zoo nkauj.

Feem ntau, peb tuaj yeem pom cov khoom lag luam granite, yog tsis muaj xim txaij, tsuas yog cov xim speckle cov qauv, nws yog qhov tsis paub meej ntawm lub ntuj, tsim txhua qhov zoo nkauj.

Hauv cov txheej txheem ntawm kev hloov pauv ntawm geological, cov ntsiab tseem ceeb xws li silicon thiab aluminium tau tag nrho tov los ntawm melting thiab dej, thiab tom qab txias, lawv tsim cov ntaub ntawv zoo li qub. ntawm yaj, txias npaum li cas ntawm magma, nucleation tus nqi ntawm cov khoom muaju, siab hloov pauv, tus nqi ntawm cov tshuaj tsis haum thiab viscosity ntawm cov kua hauv lub cev.

Los ntawm qhov pom ntawm niaj hnub mineralogy, peb ntseeg tias granite yog feem ntau ua los ntawm feldspar nrog silica-aluminium ua cov khoom tseem ceeb, quartz, mica muaj hlau thiab magnesium, hornblende, pyroxene, olivine, serpentine thiab lwm yam ua ke.

Ntawm lawv, orthoclase feem ntau yog greyish dawb, lub teeb daj thiab xim liab, plagioclase feem ntau yog greyish dawb, quartz feem ntau yog pob tshab lossis grey, biotite feem ntau yog xim dub, xim av, liab thiab ntsuab, pyroxene thiab hornblende feem ntau yog xim dub, tsaus ntsuab thiab tsaus. xim av.Qhov dav dav, dub, tsaus ntsuab, daj ntsuab ntsuab granite muaj olivine, pyroxene, hornblende, biotite thiab lwm yam ntxiv, quartz, feldspar cov ntsiab lus yuav luag tsis muaj; Lub ntsiab ntawm cov xim dawb, fleshy liab, grey-liab, lub teeb liab, grey thiab tawm-dawb granite yog feldspar thiab quartz, thaum biotite yog cov khoom siv tsaus nti thiab amphibole yog qhov tsis tshua muaj.

Nws yog tsim nyog sau cia tias qhov pore ntawm lub pob zeb lossis kev tshem ntawm cov pob zeb hauv av sib xyaw nrog lub cev tsis huv tseem yuav ua rau pob zeb tawg.Piv txwv li, lithic xeb, vim huab cua thiab decomposition ntawm hlau ore rau hauv hlau oxides thiab hydroxides, fres qhov pores thiab cov ntxhia pob zeb hauv pob zeb thiab ua rau lub pob zeb ua xeb daj.

Tsis tas li ntawd, cov qauv siv lead ua ntawm cov zaub mov tau tshwm sim qhov tsis xws luag, kuj tseem tuaj yeem ua rau lub pob zeb hloov xim, xws li potash feldspar yog xim liab nqaij liab, plagioclase yog daj ntseg, muaj qhov tsis xws luag hauv cov qauv siv lead ua, potassium feldspar tuaj yeem qhia liab liab, sib sib zog nqus liab hlau. qib chaw (luster, yongding liab, liab pob zeb diamond), sodium feldspar tuaj yeem qhia nattierblue (puning loj dawb).

Thaum cov tshuaj lom neeg muaj cov ntxhia hauv cov pob zeb muaj cov chromatism ions, xim ntawm pob zeb kuj tseem tuaj yeem hloov. Piv txwv li, qee qhov K hauv potassium feldspar yuav ntsuab xiav thaum hloov los ntawm Rb, uas yog lub hauv paus ntawm Tianhe pob zeb. Cov pob zeb nplua nuj hauv Tianhe pob zeb kuj tseem muaj nws txoj kev tsw (xws li Xinjiang Tianshan xiav).