444 TRANS. SI . LOUIS ACAD. SCIENCE. 



At Mt. Hope Mine, Fratiklin Co., massive. 



At Eureka Mine, Cole Co., as brown coating on broken chert. 

 Hydrozincite. 



At Grand}' Mines, Neivton Co., and at Valle Mines, ycfferson Co., as 

 white amorphous coating on crystalline Calamine. 

 Calamine. 



At Granby Mines, Nevjloii Co., crystals thin lamellar, about i',, of an 

 inch long, perfectly transparent and colorless, or dark green and 

 opaque. They frequently show a combination of two different prisms, 

 the macrodiagonal faces, one macrodome and one brachydome. 

 They are mostly- arranged in radiated globular forms or in botryoidal 

 groups on massive Calamine, or on Galenite. Compact Calamine 

 forms layers up to 8 feet thick; it is opaque, yellow or reddish-brown, 

 and of fine-grained structure, and contains numerous cavities with 

 crystals of Calamine or of Dolomite. Also in stalactitic forms. 



At Valley Alines, Jefferson Co., at Perry Aline and Bisch Mine, St. 

 Francois Co.. and in many other mines of South-east Missouri, it oc- 

 curs massive; usually with Smithsonite, Sphalerite, and Galenite. 

 BURATITE. 



At Granby Mines, Newton Co., in globular aggregations of apple-green 

 color, sometimes \ of an inch in diameter, but usually smaller, resting 

 on crystals of Dolomite or of Calamine. Rare. 



CADMIUM. 



^GREENOCKITt:. 



At Granby Mines, Nexvton Co., frequently as coating on Sphalerite, of 

 earthy appearance and of bright yellow, yellowish-green or green 

 color. Rarely in small crystals in fissures of Sphalerite. 



tita:nium. 



Mexaccanitk(?). 



In St. Franqois Co. and in Aladison Co.. in loose compact pieces up to 



' "^^' COBALT AND NICKEL. 



MiLLERITE. 



At St. Louis, in cavities of the St. Louis limsetone. In dark greenish- 

 yellow hair-like aggregations, irregularly interwoven and looking like 

 spider-web, laying loosely on crystals of Dolomite, Fluoriteor Calcite, 

 sometimes forming bunches that nearly fill the whole cavity. Or in 

 very thin, straight, needle-like prisms of high metallic lustre, up to 6 

 inches long, radiating from points at the wall of the cavity. Also in 

 pointed spear-like forms, consisting of parallel long thin prisms ad- 

 hering toeach other. These "spears" have been observed as large as 

 2 inches long and |^ of an inch thick; they sometimes transverse crys- 

 tals of Calcite or of Fluorite. Calcite frequently encloses Millerite in 

 considerable quantity. Often as dark green coating, of small fibres 

 and of earthy appearance, on the limestone. 



