Txawm hais tias nws yog ntuj pob zeb los yog pob zeb artificial, nws yuav tsum tau ua tiav ua ntej nws siv hauv kev tsim kho. Lub tshuab ua tau zoo tshaj plaws tseem tuaj yeem cuam tshuam qhov ua kom zoo nkauj thiab ua haujlwm ntawm nws lub pob zeb, tab sis pob zeb, tshwj xeeb tshaj yog pob zeb ntuj Ntau yam hauv cov txheej txheem sib xyaw ua rau nws tsis tas li homogeneous, uas yuav cuam tshuam rau nws ua. Yog li dab tsi yog yam cuam tshuam cuam tshuam rau kev ua cov pob zeb?
Feem ntau, qhov ntau dua qhov nyuaj ntawm cov pob zeb, qhov nyuaj nws yuav tsum tau ua thiab qhov hnyav dua hnav ntawm qhov. Raws li lub pob zeb tawv tawv kho kom zoo dua, kev tiv thaiv kev ua hauj lwm kuj tseem ua kom zoo dua, thiab cov tsis kam mus txiav yog tseem nce. Cov khoom siv hauv lub pob zeb suav nrog kev ntxhia pob zeb hauv av thiab tshuaj lom neeg. Sib txawv ntau cov ntxhia thiab cov tshuaj muaj cov txheej txheem sib txawv. Cov pob zeb tso nyiaj yog calcite thiab dolomite, nrog Mohs hardness ntawm 3 thiab 3.5-4, uas qis dua granite hardness thiab yooj yim txheej txheem.
Granite thawj cov pob zeb-tsim kev tso nyiaj yog quartz, orthoclase, thiab plagioclase. Lawv Mohs hardness yog 6.5-7. Nws qhov kev ua haujlwm tau zoo nyob ntawm ntau ntawm cov ntsiab lus ntawm quartz thiab feldspar. , Qhov nyuaj nws yog txheej txheem. Hais txog tshuaj lom neeg muaj pes tsawg leeg, cov ntsiab lus Si02 siab dua, kev lag luam nyuaj dua.
Feem ntau hais lus, cov lus tsis sib haum yog yooj yim dua li pob zeb tsis sib xyaw; cov lus mos tau zoo dua polishing zoo dua plaub ya ri; cov pob zeb zoo tau muaj dua lub ci dua li cov pob zeb xoob; siab ntxhia crystallization yog qhov zoo, thiab cov kev taw qhia thiab cov kev hloov kho qhov muag qhov kev taw qhia yuav zoo heev txhim kho qhov ci tom qab polishing.