Crystal sib txawv
Thaum magma yog condensing, raws li qhov kub thiab txias maj mam poob, ntau yam minerals crystallize los ntawm nws nyob rau hauv lem, ua rau muaj pes tsawg leeg ntawm magma hloov tsis tu ncua. Qhov kev hloov ntawm magma muaj pes tsawg leeg kuj txhawb cov crystallization ntawm qee yam khoom. Cov txheej txheem no ntawm kev hloov cov muaj pes tsawg leeg ntawm magma nrog crystallization yog hu ua Nws yog cov nyhuv ntawm crystal sib txawv.