1100 1200 1400 1500 1600 ibikoresho byo gusya zahabu icukura zahabu

Ibisobanuro bigufi:

Uruganda rutose rukoreshwa mu gusya amabuye ya zahabu, cyane cyane amabuye mato mato ya zahabu, ashobora gusya muri mesh 100-150. Abakiriya benshi baturuka muri Afrika bifuza gutumiza uruganda rutose kubera igiciro gito n’umusaruro mwinshi. Inzira ikunze kugaragara ni ugushyira mercure mu ruganda rutose, hanyuma ukavanga agace ka zahabu na mercure, bita Amalgamation. Noneho uruvange rwa zahabu na mercure rushobora gushyirwa mubikorwa kugirango ubushyuhe buke. Muri iki gihe, mercure ihumeka kandi zahabu isigaye igasigara mubikomeye.Ikintu cyingenzi nuko abakiriya bacu bashobora kubona zahabu itunganijwe nyuma yuruganda rutose, rukwiriye kubantu bashaka gutangira ubucuruzi buciriritse.