Volcanic rock Pumice (wanda akafi sani da pumice ko porous basalt) wani nau'in aikin kare muhalli ne mai aiki. Dutse ne mai matukar daraja mai daraja wanda aka samar da shi ta gilashin dutse, ma'adanai da kumfa bayan fashewar dutsen. Dutse mai aman wuta ya ƙunshi dimbin ma'adanai da abubuwan alaƙa, kamar sodium, magnesium, aluminum, silicon, calcium, titanium, manganese, iron, nickel, cobalt da molybdenum. Tana da igiyar maganadisu mai nisa-ba tare da jujjuyawa ba, Bayan dubunnan shekaru, mutane sun sami ƙimar su da ƙari. Yanzu an fadada shi zuwa fannonin gini, kula da ruwa, nika, kayan tacewa, gawayi, gawayin lambu, noman mara gona, kayayyakin kwalliya da sauransu. Yana taka rawar da ba za a iya maye gurbinsa ba a kowane fanni na rayuwa! Rockaƙƙarfan dusar ƙanƙara da baya shine nau'in maganin dutse, wanda ke amfani da duwatsun wuta masu ƙarfi don ɗaukar ƙarancin ƙarfin jikin mutum, taimakawa jikin ɗan adam kawar da gubobi da haɓaka haɓakar ɗan adam.