ZINC. wai 
Obs. Occurs commonly with galena or blende, and usual- 
ly in calcareous rocks. Found in Siberia, Hungary, Sile- 
sia; at Bleiberg in Carinthia; near Aix- la- Chapelle in the 
Lower Rhine, and largely in ‘Derbyshire : end elsewhere in 
Eneland. In the United States, it is abundant at Vallée’s 
Diggings in Missouri, and at other lead « diggings”? in Iowa 
ana Wisconsin ; also in Claiborne County, Tenn. Sparingly 
also at Hamburg, near the Franklin Furnace, N. J.; at the 
Perkiomen lead mine, Pa., and at a lead mine in Lancaster 
County. 
Hydrozincite is a hydrous zine carbonate, Zn O, C+2 Zn O2 H, of a 
whitish color, with G.=3:58-3'8. 
Aurichaicite is a hydrous carbonate of zine and copper, occurring in 
drusy incrustations of acicular crystals, having a pale verdigris-green 
color. From Siberia, Hungary, England, and Lancaster, Pa. 
Buratite is a lime aurichaicite. 
Willemite.—Zinc Silicate. Troostite. 
Rhombohedral. & A &=116° 1’. Jn hexagonal prisms, 
and also massive. 
Color whitish, greenish yellow, apple-green, flesh-red, yel- 
lowish brown. Streak uncolored. ‘Transparent to opaque. 
Brittle.  H.=5°5. . G.=3-89-4-18. 
Composition. Zn O, Si=Silica 27-1, zinc oxide 72°9= 
100. B.B. fuses with ‘difficulty to a white enamel ; on char- 
coal, and most easily on adding soda, yields a coating which is 
-yellow while hot, and white on cooling, and which, moistened 
with cobalt solution and treated in O.F., is colored bright 
green. Gelatinizes with hydrochloric acid. 
Obs. From Moresnet, between Litge and Aix-la-Chapeile ; 
Raibel in Carinthia ; Greenland. Abundant at both Frank- 
lin and Sterling, mixed with zincite, and used as an ore of 
ae ; also in prismatic crystals that occasionally are six inches 
one. 

Calamine.—Hydrous Zine Silicate. Galmei. 
Trimetric. In rhombic prisms, the opposite extremities 
with unlike planes. J, J=104° 13’. Cleavage perfect 
parallel to 7, Also massive and incrusting, mammiullated or 
stalactitic. 
Color whitish or white, sometimes bluish, greenish, or 
brownish. Streak uncolored. Transparent to translucent. 
Lustre vitreous or subpearly. Brittl. H.—4%5-5. G.= 
3‘16-3°9. Pyro-electric. 

