Jl Description of a JVew Mineral Species. 83 



ish white powder, soluble in muriatic acid, its solution affording by- 

 evaporation small transparent crystals ; when these crystals were 

 heated in sulphuric acid, a solution was obtained, in which crystals of 

 sulphate of potash, caused the precipitation of delicate flocks of crys- 

 tals of sulphate of lime. The crystals mixed with boracic acid and 

 metallic iron, heated before the blowpipe flame, readily fused, and 

 gave a globule of phosphuret of iron, it was therefore principally- 

 phosphate of lime. 



VI. When the liquor and washings from the phosphate of lime in V. 

 were united and evaporated, a mass remained, "which when heated in 

 a platina crucible, was volatilized except a half fused saline matter, 

 enveloping a light white earth ; water digested for some time on this, 

 dissolved all but a few parts; the solution was saturated although con- 

 siderable in quantity; when partially evaporated it deposited imperfect 

 crystals of a diffic.ultly soluble salt, along with opake, soluble cubes. 

 The mixed salt being dissolved in water, a trifling excess of carbonate of 

 soda was added, the whole evaporated and heated, water then dissolved 

 the soluble part, and the solution by evaporation deposited pure, well 

 formed cubes of chloride of sodium, which when dried, weighed 3. 

 713- This salt dissolved in water was not affected by a solution of 

 chloride of sodium and platina or oxychlorate of soda, when the solu- 

 tion was evaporated with phosphate of soda, no insoluble matter re- 

 mained ; thus proved to be free from potash, or lithia ; the chloride is 

 equivalent to 1.97 parts of soda. 



VII. That part which water did not dissolve with the portion left 

 by carbonate of soda in VI. was united to the phosphate of lime of 

 V. the whole weight was 3.00 parts, by digesting with sulphuric acid, 

 evaporating to a paste and adding alcohol in a relatively large 

 quantity, 2.94 parts of dry sulphate of lime were obtained. It was 

 yellow colored and by subsequent treatment with oxalic acid and al- 

 cohol .07 per oxide of iron was separated, leaving 2.87 parts sulphate 

 equal to 1.19 lime. 



VIII. When the alcoholic solution from the sulphate of lime in 

 VII. was evaporated and heated, it gave a glacial acid, very soluble 

 in water and alcohol, its alcoholic solution burnt with a yellow flame. 

 With oxide of iron, boracic acid and metallic iron, it gave by heating, 

 phosphuret of iron ; it was phosphoric acid containing a trace of 

 lime, and by difference its weight was 1 .74. 



t 



