Ingqimba engahluziwe yomthofu wensimbi etholakala ngokuncibilikisa amatshe e-galena (PbS). Iqukethe ukungcola — isiliva, i-antimony, i-bismuth — okungadingeka kususwe ngokuhlanzwa okukhethekile. Umthofu uncibilika ku-327 °C — ukushisa okuphansi ngokwanele kokuthela okulula ebhodweni. Uyibuthi — uphathe ngamagilavu, ugeze izandla kahle, futhi usebenze endaweni enomoya.