Inkomba ye-MOS: Ipuleti ledwala eliqinile le-igneous elinesakhiwo samakristalu abambene e-quartz, i-feldspar, ne-mica. Amandla ayo amakhulu okumelana nokucindezelwa nokuhlikihleka ayenza ibe yisinqumo sokuqala samatafula asekhishini, izikhumbuzo, amaphansi, nokumboza izakhiwo. Iyatholakala icwebezelisiwe, ipholishiwe kancane, noma ishiswe ngomlilo, ngokwezidingo zobuhle nezokusebenza.