Ntchito:Kuchotsa zodetsa zachitsulo pakunyowa ndikuyeretsa mchere wopanda zitsulo, monga quartz, sodium kapena potaziyamu feldspar.Komanso, ndi mkulu maginito mwamphamvu, ali ndi zotsatira zabwino kwambiri kulekanitsa ofooka maginito mchere, monga hematite, specularite, limonite, siderite, manganese ore, etc.