LEONHARD — NOTES ON THE MINERALOGY OF MISSOURI. 449 



radiated fibrous structure, sk^'-blue color, and silkj lustre, partially 

 embedded in Gypsum. 

 In Franklin Co., in aggregations of light pink color and radiating co- 

 lumnar structure. 

 Fluokite. 



In St. Lout's, in cavities of the limestone, in transparent cubic crystals 

 of light honey-yellow color, of sometimes 1^ inches side-length, rarely 

 enclosing crystalline aggregations of Millerite. 

 In Iron Co., in cavities of the porphyry, in small crystals of amethyst 



color. 

 At Einstein Silver Mine, Madison Co. 

 Apatite. 



At Iron Mountain, St. Francois Co., in Specular Iron Ore. In crystals 

 of light pink color, of earthy appearance, with a hardness less than 

 5 ; evidently partially decomposed. Also in compact flesh-colored 

 masses. 



BARIUM AND STEONTIUM. 

 Barite. 



In Morgan Co. and Cole Co., massive and crystallized. Crystals often 

 perfectly transparent, up to 4 inches long, showing a combination of 

 the brachy-pinacoid, the brachydome, the prism, and a small develop- 

 ment of the macrodome. Also in large tabular crystals, translucent 

 and of light bluish color, showing the faces of the brachy-pinacoid and 

 the macrodome. The latter variety contains Strontium, being per- 

 haps Barito-celestite. 



In the South-eastern fart of the Stale in many localities, especially in 

 Jifferson Co. and Washington Co., massive, of white, yellow or light 

 brown color, often coarsely laminated. Crystals, lamellar and opaque, 

 on massive Barite. In most of the Lead mines of that region asso- 

 ciated with Galenite; sometimes forming globular snowy-white crys- 

 talline aggregations on crystals of Galenite. 



In St. Louis, in cavities of the limestone, in snowy-white, rounded 

 incrustations on Calcite crystals or on Millerite. 



In Jacksoji Co., massive and in opaque crystals of flesh-color. 

 WiTHEUITE. 



Near Potosi, Washington Co., massive, in botryoidal forms. Rare. 



Rem — It has been proved by spectral analysis that most of the dolomitic 

 limestone of South-east Missouri, especially the so-called third mag- 

 nesian limestone, contain traces of Strontium. 



POTASSIUM AND SODIUM. 



Nitre. 



In Ozark Co., as efilorescence on sandstone (observed by Shumard.) 

 At Pottland, Calla-vay Co.; in Pulaski Co., and Maries Co., in the clay 

 of caves. 



