APPENDIX. 



323 



2. Analysis. 



By WERNEKINCK. By HISINGER. 



Sulphur . . 42-25 ... 38-50 



Cobalt . . 53-35 . . . 43-20 



Iron . . 2-30 . . . 3-53 



Copper . . 097 . . . 14-40 



3. It is found in beds, at Riddarhyttan in Sweden, in gneiss. 



COLUMBITE. 



A very interesting deposit of this species has lately been discovered at 

 Middletown, (Conn.) It exists in granite. The crystals are occasion- 

 ally distinguished for their regularity and high degree of lustre, and are 

 very generally of unusual dimensions for the species. One of these in 

 the possession of Mr. F. MERRICK, the discoverer of the locality, 

 weighs three or four ounces. Several of the angles of the annexed fig- 

 ure were obtained by means of the reflective goniometer. 



T onv 

 T on a 

 T on i 

 v on a 

 a on i 

 Mon a 

 M on v 

 P on c 

 M on c 

 c on o 

 a on o 

 M on o 

 e on e 

 a on e 

 P on e 

 P on o 



157 40' 



129 30 



112 10?? 



150 10 



162 30? 



140 40 



107 45? 



160 23 



109 37 



140 30 



144 00 



128 30 



149 30 



126 30 

 137 20? 



127 00 



Fig. 498. 



Associated with the crystals of Columbite are Apatite, Uranite and 

 Albite. 



