piemontite

pie mon tite |ˈpēmənˌtīt ˈpiməntaɪt | ▶noun a brown or black mineral of the epidote group consisting of a silicate of calcium, aluminum, iron, and manganese. ORIGIN late 19th cent.: from Italian Piemonte (see Piedmont ) + -ite 1 .

piemontite

piemontite |ˈpiːmɒntʌɪt | ▶noun [ mass noun ] a brown or black mineral consisting of a silicate of calcium, aluminium, iron, and manganese. ORIGIN late 19th cent.: from Italian Piemonte (see Piedmont ) + -ite 1 .