kusankha, kuyeretsa, mankhwala asidi, kutentha kusungunuka, sing'anga kuphwanya, akupera bwino, grading, kuchotsa chitsulo ndi zina.
njira, zomwe zimakwaniritsa zofunikira zogwiritsira ntchito.
Ufa wa Quartz umangogawidwa m'mafotokozedwe. Chifukwa cha kuyera kwake kwakukulu, palibe zonyansa komanso chitsulo chochepa, ali ndi a
osiyanasiyana ntchito.