Granite

It belongs to the intrusive rock in acidic (SiO2>66 feem pua ​​) magmatic pob zeb, uas yog hom pob zeb ntau tshaj plaws nyob rau hauv chav kawm no, feem ntau muaj lub teeb nqaij liab, lub teeb grey, grey dawb, thiab lwm yam. Nruab nrab rau coarse grained, nplua-grained qauv, blocky qauv. Qee qhov yog cov qauv patchy, cov qauv kheej kheej, thiab cov qauv gneissic. Cov zaub mov tseem ceeb yog quartz, potassium feldspar thiab acid plagioclase, thiab cov zaub mov thib ob yog Biotite, Amphibole, thiab qee zaum me me ntawm pyroxene. Muaj ntau ntau yam khoom siv ntxiv, xws li Magnetite, sphene, zircon, Apatite, Tourmaline, fluorite, thiab lwm yam. Cov ntsiab lus quartz yog qhov siab tshaj plaws ntawm ntau yam pob zeb magmatic, xws li 20-50 feem pua, nrog ob peb txog {{ 3}} feem pua. Cov ntsiab lus ntawm cov poov tshuaj feldspar feem ntau siab dua li ntawm plagioclase, thiab qhov sib piv ntawm ob feem ntau yog ob feem peb ntawm tag nrho cov nyiaj ntawm feldspar thiab ib feem peb ntawm plagioclase. Potassium feldspar nyob rau hauv granite feem ntau yog lub teeb nqaij liab, thiab tseem muaj grey dawb thiab grey. Grey dawb potassium feldspar thiab plagioclase feem ntau nyuaj rau kev paub qhov txawv ntawm cov qauv tes. Nyob rau ntawm lub sijhawm no, peb yuav tsum ua tib zoo saib xyuas qhov ntxaib siv lead ua tus yam ntxwv ntawm ob hom feldspars, vim tias plagioclase muaj polycrystalline ntxaib crystals. Thaum tig cov qauv, tsis tu ncua hloov lub teeb thiab cov pawg tsaus nti tuaj yeem pom ntawm cov plagioclase siv lead ua, thaum potassium feldspar yog ib daim npav ntxaib siv lead ua, pom tau tias yog ob feem ntawm cov muaju nrog cov qib sib txawv.
Granite kuj tseem tuaj yeem muaj npe ntxiv raws li hom ntxhia tsaus, piv txwv li, cov ntxhia tsaus yog feem ntau Biotite, uas tuaj yeem hu ua Biotite granite, uas yog hom granite. Piv txwv li, Biotite thiab Muscovite, uas nws cov ntsiab lus yog ze li ntawm qhov sib npaug, tuaj yeem hu ua ob mica granite; Yog hais tias cov ntxhia tsaus yog Amphibole, nws yog hu ua hornblende granite; Yog hais tias cov ntxhia tsaus yog feem ntau pyroxene, nws yog hu ua pyroxene granite; yog tias yuav luag tsis muaj cov ntxhia tsaus, nws tuaj yeem hu ua dawb granite.