Mineralogy and Geology. 119 
II. MINERALOGY AND GEOLOGY. 
1. Pachnolite, a new mineral.—In searching for crystallized eryolite, 
occurs 
Fe Al Na Ca H 
50°79 18:14 12°16 17-25 960 = 102-94 
ftom which Knop draws the formula 3(2Ca, 2Na,) FI4+-Al,Fl,+2H= 
Fl 51-12, Al 12-29, Na 12°38, Ca 16°14, H 8.07=100, 
; The crystalline form of pachnolite as determined by Knop and v. Rath 
's trimetric. The crystals occur in simple rhombic 
to its crystalline form and chemical composition. Dr. Hagemann’s 
analysis gives : 
Fl N Cc H se 
5115 eis tot 1744 863 = 9963 
It is interesti in this connection to note that cryolite is now imported 
froma A A by the cargo to Natrona for the purpose of pean 
mg soda ash, alumina salts and other products mentioned in volume 
XXXY, p. 285,] 6... 
