(Encyclopedia) Thunder Bay, city (1991 pop. 113,946), SW Ont., Canada, on Thunder Bay inlet of Lake Superior. The city was created in 1970 by the amalgamation of the twin cities of Fort William and…
(Encyclopedia) bariumbariumbârˈēəm [key] [Gr.,=heavy], metallic chemical element; symbol Ba; at. no. 56; at. wt. 137.327; m.p. 725℃; b.p. 1,640℃; sp. gr. 3.5 at 20℃; valence +2. Barium is a soft,…
(Encyclopedia) ElbaElbaĕlˈbä [key], island, 86 sq mi (223 sq km), Tuscany, central Italy, in the Tyrrhenian Sea, 6 mi (9.7 km) from the Italian mainland, part of the Tuscan Archipelago. Iron ore has…
(Encyclopedia) Abel, Niels HenrikAbel, Niels Henriknēls hĕnˈrĭk äˈbəl [key], 1802–29, Norwegian mathematician. While a student at the Univ. of Christiania (Oslo) he did fundamental work on the…
(Encyclopedia) Cleary, Beverly, 1916–2021, American children's books author, b. McMinnville, Ore. as Beverly Atlee Bunn, Univ. of California, Berkeley…
(Encyclopedia) hematitehematitehĕmˈətīt [key], mineral, an oxide of iron, Fe2O3, containing about 70% metal, occurring in nature in red to reddish-brown earthy masses and in steel-gray to black…
(Encyclopedia) Minas GeraisMinas Geraismēˈnəs zhərīsˈ [key] [Port.,=various mines], state (1996 pop. 16,660,691), 226,707 sq mi (587,171 sq km), E Brazil. The capital is Belo Horizonte. Minas Gerais…
(Encyclopedia) ocherocherōˈkər [key], mixture of varying proportions of iron oxide and clay, used as a pigment. It occurs naturally as yellow ocher (yellow or yellow-brown in color), the iron oxide…
(Encyclopedia) Carson City, city (2020 pop. 58,639), state capital, W Nev., in the Eagle valley; inc. 1875. The city is a trade center for a mining and…
