59.—Rutile.
Occurs in crystals generally; metallic lustre; powder pale brown; brittle; unchanged by heat or acids; if powdered and fused with potash, then dissolved in muriatic acid, the solution boiled with tinfoil assumes a beautiful violet color; gravity 4.
Value.—Used for coloring porcelain and artificial teeth.
Localities.—Found in granite and, limestone rocks. Warren, Me.; Merrimack, and Warren, N. H.; Bristol, Putney and Waterbury, Vt.; Windsor, Shelburne, Barre, Conway and Leyden, Mass.; Monroe, Conn.; Warwick, Edenville, Amity and Kingsbridge, N. Y.; Sudsbury, West Bradford, Parksburg, Concord and Newlin, Pa.; Newton, N. J.; Crowder’s and Clubb Mountains, N. C.; Habersham and Lincoln Counties, Ga.; Magnet Cave, Ark.