The rocks in anthracite regions are tilted, bent and broken, never level to any great extent. Impressions of leaves are good indications.
5.—Antimony Ore.
Occurs fibrous or granular; color lead gray, often tarnished; shining lustre, brittle; but thin pieces can be cut off with a knife; melts in a candle, at a high heat passing off in vapor; gravity 4.5.
Value.—The source of the antimony of commerce, containing seventy per cent.
Localities.—Found associated with Silver, Spathic Iron, Blende, Baryta and Quartz. Carmel, Me.; Lyme, N. H.; Soldier’s Delight, Md.; Aurora, Nev.; San Amedio Cañon and Tulare County, Cal.
6.—Asbestus.
Occurs finely fibrous, flax-like; flexible, not elastic; silky lustre, sometimes greenish; gravity 3.
Value.—Used for lining safes and steam-packing, and for making incombustible cloth, lamp-wicks, etc.
Localities.—Found in granite-regions east of the Alleghanies; often with Serpentine. Brighton, Dedham, Newbury, Pelham and Sheffield, Mass.; Milford, West Farms, Winchester and Wilton, Conn.; Chester, Mt. Holly and Cavendish, Vt.; Patterson, Phillipstown, Monroe and Staten Island, N. Y.; Brunswick, N. J.; East Nottingham, Goshen and Aston, Penn.; Bare Hills and Cooptown, Md.; Barnet’s Mills, Va.