LEONHARD NOTES ON THE MINERALOGY OF MISSOURI. 443 



At Valle Mines, Jefferson Co.; at Hope-well Mines and Mine-a- Burton, 

 Ftanklin Co.; at Mine La Matte; and at Oronogo, Jasper Co., crys- 

 tallized in cavities of Galenite or of Cerussite. 

 Plumbogummite. 



At Palmer Mines, Jefferson Co., and at Mine La Moite, Madison Co., 

 in small greenish globules, of waxy luster, and of less than pin-head 

 size, with crystals of Cerussite on Galenite, whose surface is corroded. 



ZINC. 



Sphalerite, 



At Joplin, Oronogo, and Webb City, Jasper Co., reddish-brown crys- 

 tals, sometimes i inch in diameter, in silicious clay, showing combi- 

 nations of dodecahedron with cube and hemi-trapezohedron, with 

 curved, convex faces; also in small bright red crystals. Mostly mas- 

 sive, or coarse crystalline, of dark brown color; sometimes green, 

 greenish-yellow or red. Rarely in black or bluish-black pieces with 

 metallic lustre, resembling Galenite, which, by analysis of R. Chau- 

 venet, proved to be pure S., with but traces of lead and iron. A fine- 

 grained variety forms part of a breccia, in which pieces of chert are 

 cemented by siliceous matter, Sphalerite and Pyrite ; often intimately 

 mixed with Galenite. 



At Granby Mines, Netvton Co., in coarse crystalline masses, with Cala- 

 mine and Galenite. Crystals are frequently coated by Greenockite. 

 The coarse crystalline variety encloses bands, up to i inch thick, of a 

 fine-grained or granular variety, with small bright red crystals of ada-^ 

 mantine lustre. 



At Mount Hope Mine, Franklin Co., massive with Smithsonite. 



At Darby's Mine, Franklin Co., mixed with Pyrite. 



In Mottiieau Co., crystals and sheets in cannel-coal. 



In St. Louis Co., in crystalline masses, of brown or black color, in cavi- 

 ties of limestone. 



At Sugar Creek, Buchanan Co.; Holden, Johnson Co.; Grand River, 

 Henry Co., in the interior of Clay Iron Ore concretions in slate of the 

 coal formation. 



At Nodaway Co., enclosed in crystalline Calcite. 

 S-MITHSONITE. 



At Granby Mines, Neivton Co., aggregations of milky-white crystals, in 

 the form of flat rhombohedrons, on Calamine; in the Hardshaft in 

 hollow stalactitic forms, covered by small transparent crystals of 

 Smithsonite; massive, usually grayish-brown, and of fine-grained 

 structure ; occasionally dense and of light yellow color. 



In Dade Co., in masses of light grass-green or of yellowish-gray color, 

 fine-grained, and porous, in botryoidal forms. 

 At Collins Mine, Cooper Co., massive, mixed with Limonite. 



At Perry Mine and Birch Mine, St. Francois Co., in small quantity 

 with Sphalerite. 



At Valle Mines, Jefferson Co., massive, with Calamine and Sphalerite, 

 iv— 3—4 



