ZINC. 155 
which resemble garnet, are distinguished by the same char- 
aracters and also by their very difficult fusibility. 
Obs. Occurs in rocks of all ages, and is associated gener- 
ally with ores of lead; often also with copper, iron, tin, and 
silver ores. The lead mines of Missouri and Wisconsin afford 
this ore abundantly. Other localities are in Maine, at Lu- 
bec, Bingham, Dexter, Parsonsfield ; in New Hampshire, 
at Haton, Warren, Haverhill, Shelburne; in Vermont, at 
Hatfield ; in Connecticut, in Brooktield, Berlin, Roxbury, 
and Monroe; in New York, at Ancram lead mine, the 
Wurtzboro’ lead vein, at Lockport, Root, 2 miles southeast 
of Spraker’s Basin, in Fowler, at Clinton ; at Franklin, N. 
J., colorless (Cleiophane) ; in Pennsylvania, at the Perkio- 
men lead mine ; in Virginia, at Austin’s lead mine, Wythe 
County; in Tennessee, near Powell’s River, and at Haysboro’; . 
at Prince’s Mine, Spar Island, Lake Superior, with ores of sil- 
ver; in Beauce Co., Canada, where it is slightly auriferous. 
This ore is the Black-jack of miners. 
Blende is a useful ore of zinc, though more difficult of re- 
duction than calamine. By its decomposition (like that of 
pyrite), it affords sulphate of zinc or white vitriol. 
_ Wurtzite is zine sulphide in hexagonal crystals from Bolivia. Huas- 
colite and Youngite are zinc-lead sulphides. 
Zincite.-Red Zinc Ore. Red Zine Oxide. 
Hexagonal. Usually in foliated masses, or in disseminated 
grains ; cleavage eminent, nearly like that of mica; but the 
lamine brittle, and not, so easily separable. 
Color deep or bright red; streak orange-yellow. Lustre 
brilliant, subadamantine. ‘Translucent or subtranslucent. 
H.=4-4°5. G.=5:4-5:7. Thin scales by transmitted light 
deep yellow. 
Composition. Zn O=Oxygen 19:7, zine 80'°3=100. B.B. 
infusible alone, but yields a yellow transparent glass with 
borax ; on charcoal, a coating of zine oxide. Dissolves in 
nitric acid without effervescence. : 
Diff. Resembles red stilbite, but distinguished by its in- 
fusibility and also by its mineral associations. 
Obs. Occurs with franklinite at Mine Hill and Sterling 
Hill, Sussex County, N. J. 
A good ore of zine, and easily reduced. 
Voléizite. A compound of sulphur, oxygen and zinc, 4 ZnS +Zn 0. 
Occurs in implanted globules of a dirty rose-red color, with a pearly 
lustre on a cleavage surface. From I'rance, and near Joachimstahl, 
