Value.—Affords copper, (sixty per cent.,) and blue vitriol.
Localities.—Found in trap regions with other copper ores. Schuyler’s, Somerville, New Brunswick and Flemington Mines, N. J.; Cornwall, Pa.; Ladenton, N. Y.; Lake Superior Region. Not abundant.
54—Red Hematite.
Occurs in compact masses, with rounded surfaces or kidney-shaped; fibrous structure; color brownish-red to iron-black; but powder invariably red; when black, the lustre is somewhat metallic, otherwise dull; brittle; scratches glass with difficulty; dissolves slowly in strong muriatic acid; gravity 4.5 to 5.
Value.—An ore of iron, yielding from thirty-six to fifty per cent. In powder, used as pigment and for polishing metals.
Localities.—Found usually in beds with granite or limestone. Aroostook County and Hodgdon, Me.; Antwerp, Ticonderoga, Crown Point and Gouverneur, N. Y.; Vernon, N. J.; West Whiteland, Pa.; Chatham and Orange Counties, N. C.; Marquette, Mich; Shasta County, Cal. This mineral graduates into a soft, earthy variety, called red ochre, and into a compact, slaty variety, called red chalk, which has a clayey odor when breathed on.
55.—Red Silver Ore.
Occurs in crystals and masses; metallic lustre; brittle; powder cochineal-red; easily cut; at a high heat yields a silver globule; the powder heated with potash turns black; gravity 6.
Value.—An ore of silver yielding sixty per cent.
Localities.—Found at gold and silver mines. Washoe and Austin, Nev.; Poorman Lode, Idaho.