is the Spanish word for emerald . &&&&&&&&&&&&0971.&&&&&0 971 &&&&&&&&&&&03589.&&&&&0 3,589 sq mi ( &&&&&&&&&&&09295.&&&&&0 9,295 km 2 ) Eureka County 011 Eureka 1873 Part of Lander county. Greek expression Eureka , meaning I have found it! , in reference to deposits of silver found in the vicinity. &&&&&&&&&&&01651.&&&&&0 1,651 &&&&&&&&&&&04176.&&&&&0 4,176 sq mi ( &&&&&&&&&&010816.&&&&&0