Localities.—Found in low places, generally in the vicinity of slate or iron ore beds. Warren, Vt.; Blue Hill, Hodgdon and Thomaston, Me.; Columbia and Duchess Counties, Austerlitz, Canaan Centre and Martinsburg, N. Y.; East Bradford and White Marsh, Pa.; Mine la Motte, Mo.
77.—Willemite.
Occurs in crystals and masses; feeble lustre; brittle; can hardly be cut with a knife; sometimes scratches glass; makes a jelly in muriatic acid; gravity 4.
Value.—Contains seventy per cent. of zinc.
Localities.—Found in limestone with zincite. Franklin and Sterling, N. J.
78.—Zincite.
Occurs in foliated masses or grains, powder orange-yellow; brittle; dissolves in acids without effervescence; gravity 5.5.
Value.—Yields seventy-five per cent. of zinc.
Localities.—Found in limestone with Franklinite, Garnet, etc. Sterling Hill and Mine Hill, N. J.
