(Encyclopedia) SamarSamarsäˈmär [key], island (1990 pop. 1,246,722), 5,050 sq mi (13,079 sq km), 3d largest of the Philippines, one of the Visayan Islands, NE of Leyte (from which it is separated by…
(Encyclopedia) sideritesideritesĭdˈərīt [key] or chalybitesideritekălˈĭbīt [key], a mineral, varying in color from brown, green, or gray to black and occurring in nature in massive and crystalline…
(Encyclopedia) amalgamation processamalgamation processəmălˌgəmāˈshən [key], in particular, a method to extract gold and silver from ores. The ore is crushed and treated with mercury, in which the…
(Encyclopedia) QaidamQaidamchī-däm [key] or TsaidamTsaidamtsīˈdäm, chī-däm [key], arid basin, c.350 mi (560 km) long and c.100 mi (160 km) wide, between two branches of the Kunlun range, central…
(Encyclopedia) LipetskLipetsklyēˈpyĭtsk [key], city (1989 pop. 450,000), capital of Lipetsk region, E central European Russia, on the Voronezh River. It is the center of an iron-ore-mining area.…
(Encyclopedia) LokojaLokojalōkōjäˈ [key], town (1987 est. pop. 45,600), central Nigeria, at the junction of the Niger and Benue rivers. Lokoja is the trade and distribution center for an agricultural…
(Encyclopedia) magnetitemagnetitemăgˈnətīt [key], lustrous black, magnetic mineral, Fe3O4. It occurs in crystals of the cubic system, in masses, and as a loose sand. It is one of the important ores…
(Encyclopedia) VilyuiVilyuivĭly&oomacr;ˈē [key], river, c.1,520 mi (2,450 km) long, rising in the central Siberian uplands, E Siberian Russia, in the Sakha Republic, and flowing east through an…
(Encyclopedia) chalcopyritechalcopyritekălˌkəpīˈrīt, kălˈkōpīˌrīt [key] or copper pyriteschalcopyritepīrīˈtēz, pə– [key], brass-yellow mineral, sometimes with an iridescent tarnish. It is a sulfide…
