RECENT ADDITIONS TO THE MINERALOGY OF 



MISSOURI. 



H. A. Wheeler, E. M. 



(Read by title at Academy meeting, March 17th, 1890.) 



A contribution to our Missouri mineralogy was made in 

 Vol. 4, p. 440, of the «' Transactions of the St. Louis Academy 

 of Sciences " by Mr. A. V. Leonhard who, in a paper entitled 

 "Notes on the Mineralogy of Missouri," describes 70 species 

 and 5 varieties of minerals that are found in the State of 

 Missouri. Later collectors have since added 48 more species 

 and 11 additional varieties to our local mineralogy, which are 

 herewith given (1894) as a supplement to Mr. Leonhard's 

 list (1884). 



GOLD. 



Placer Gold. Occasional occurrences, in small amounts, in 

 the Glacial Drift in the Northern and Western parts of 

 the State; by Norwood and Broadhead. 



SILVER. 



Argentiferous Galena^ at the Einstein mine, in Madison 

 County, in a fissure-vein in archean granite; it assays 100 

 to 300 ounces per ton, but is not abundant. 



MERCURY. 



Native Mercury. In the Loess or surface clay at Cheltenham 

 station, St. Louis, in very small amounts, by J. P. 

 Gazzam, E. M. ; is probably of artificial origin. 



TIN. 



Cassiterite was reported as occurring as disseminated grains 

 in greenstone near Frederickstown, in Madison County; 

 a large comi)any was formed in 1871 to work it, but it 

 proved to be a case of " salting." 

 (126) 



