1This result is sometimes obtained in fusing rich silver ores on charcoal.
2Most silver ores are easily recognisable, and readily tested by means of the blowpipe or simple fire assay.
3Workable gold and silver ores are abundant along the Andean cordillera; gold, silver, and copper are exported to Europe.
4The Yankee Fork, Loon Creek, and Stanley basin districts of Custer County were all contributors to the State exhibit of gold and silver ores.
5High-grade silver ores are produced and sent to the smelting works at Aguascalientes, and copper mines are being actively worked, as well as gold ores.
6The northern, or Salair, mining region is rich in silver ores, and the mine of this name used formerly to yield up to 93,300 oz.
Esta colocação é formada por:
Translations for silver ores