On Tribasie Phosphoric Acid. L65 



who all overlooked phosphoric acid. This mineral seems to 

 bethetirst one in the analysis of which the method with water 

 glass wa> u-ed. 



A] 2 3 P0 5 + 4A1 2 3 , 3 HO. 

 1817-1820. Amblygomte, Breithaupt (Hotfm. Min. IV. 6, 

 159). 

 Berzelius (Gilb. Ann. LXV. 321). 



{i (LiO, NaO) 3-1 Al 2 3 ) 4, PO 5 . 

 1819-1819. Autunite, Berzelius 'X. Syst. Min. 295). 

 Berzelins (1. c.) 



It was known before as Frank • : Werner, who analyzed it. 

 found if to contain 72.1."> I\ ( > 3 . Berzelius obtained L5.20 1'' >"'. 

 I\ 3 2, P0 5 +CaO. IIO + T IB'. 

 1821-1821. Wagnerite, Fuchs (Schw. J. xxxiii. 269). 

 Fuchs (1. c.) 



RfgO 3. PO 5 . 

 1^3-W>2. ChUcb-enite. Lew (Branded J. XVI. 274). 

 Rammelsberg (Pogg. Ann. LXXXY. 435). 



■i iR04, P0 5 ) + (A1 2 8 2, PO^+IS IK). 

 1^24-1^4. Xmotime, Berzelins (Ak. II. Stockh. ii. 331). 

 Berzelins <1. c.) 



YO 3, BO 5 . 

 1825. Hopeite, Brewster (Trans. Ii. Soc. Edinb. X. L07). 

 Brewster, no analysis. 



Is supposed to he an hydrous phosphate of zinc with a little 

 Cadmium. 



1 ^-±~<-\ ^25. CacoxenUe^ J. Steinmann (Leonh. Oryctog 

 750). 



J. Steinmann (1. c.) 



Fe. <> i', P0 5 +12 IK). 

 1821 L825. Hurea/uUte^ Allnaud (Vauq. Ann. Ch. Phy. 

 XXX. 302 . 



Vauqnelin (1. c. | 



(MnO. Fe O, HO) 3, PO'+2 HO. 

 1826-1857. Beudunlite, Levy (Ann. PhiL II. ii. 1'.' 



