Localities.—Found generally with iron-ore and fire-clay. Common on the eastern slope of the Alleghanies; Branford, Vt.; Beekman, Athol, Johnsburgh and McIntyre, N. Y.; Perth Amboy, N. J.; Reading, Tamaqua and New Garden, Penn.; Mt. Savage, Md.; Richmond, Va.; Newcastle and Wilmington, Del.; Edgefield, S. C.; near Augusta, Ga.; Jacksonville, Ala.
41.—Lenticular Iron Ore.
Occurs in beds or masses, consisting of minute flattened grains; little lustre; generally soils the fingers; breathed upon has a clayey odor; color, brownish-red, powder more red; dissolves in strong muriatic acid with some effervescence; brittle; gravity 4.
Value.—An ore of iron yielding thirty-three per cent. Generally mixed with other ores at the furnace.
Localities.—Found in sandstone. Wayne, Madison, Oneida and Herkimer Counties, N. Y.; Marietta O.
42.—Limonite, or Brown Hematite.
Occurs in masses, with smooth rounded surfaces and fibrous structure; sometimes as hollow nodules, which are velvety-black inside; its powder when rubbed is yellowish-brown; when strongly heated turns black; scratches glass feebly; brittle; dissolves in hot aqua-regia; gravity 4.
Value.—A common ore of pig-iron, containing sixty per cent.; used also for polishing buttons, etc.
Localities.—Found in heavy beds with mica-slate, quartz, limestone, etc. Salisbury and Kent, Conn.; Amenia, Fishkill, Dover and Beekman, N. Y.; Richmond and Lenox, Mass.; Pittsfield, Putney, Bennington and Ripton, Vt.; Hamburgh, N. J.; Pikeland and White Marsh, Penn.; Marquette, Mich.; Makoquata River, Iowa; Iron Mountains, Stow and Green Counties, Mo.; Centerville, Ala.; near Raleigh and Smithfield, N. C.; on Coal Creek, Col.; and in coal areas generally.