88 PHYSIOGRAPHY. 



It occurs at Ersby in the parish of Pargas in Finland, 

 along with Pargasite (hemi-prismatic Augite-spar) imbed- 

 ded in rhombohedral Lime-haloide ; also near Newton in 

 Sussex county, New Jersey, along with Graphite and curved 

 lamellar calcareous spar. Count D'OHSSON first described 

 the Chondrodite from Pargas. Dr BRUCE discovered the 

 American variety, which was named Brucite after him, by 

 GIBBS. SEYBERT gave it the name of Madureite. 



COBALT-KIES. 

 PYRITES ? 



Cobalt-Kies. JAM. Syst. Vol. III. p. 289. Man, p. 270. 

 Sulphuret of Cobalt. PHILL. p. 280. 



Massive : composition granular . . . impalpable. In- 

 dividuals indistinctly cleavable. Fracture con- 

 choidal, uneven. 



Lustre metallic. Colour pale steel-grey, tarnished 

 copper-red. 



Semi-hard. 



It emits a sulphureous odour before the blowpipe, and 

 after having been roasted, it communicates a blue colour 

 to glass of borax. It consists, according to HISINGER, of 



Cobalt 43-20. 



Copper 14-40. 



Iron 3-53. 



Sulphur 38-50. 



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

 along with pyramidal Copper-pyrites, and hemi-prismatic 

 Augite-spar. 



COB ALT 1C GALENA OR COBALTIC LEAD-GLANCE. 

 GLANCE. 



Cobaltic Galena or Cobaltic Lead-Glance. JAM. Syst. Vol. 

 III. p. 368. 



