IMPERFECTLY EXAMINED MINERALS. 245 



HARD COBALT PYRITES, Breit. H. 5-0., .6-0. Sp. Gr. 6-7.. .6-8. L. 



met. C. dark tin- white. Massive. 

 HATCHETINE, Conybeare. Very soft. Very light. L. glistening and 



pearly. C. yellow. In flakes. 

 HERRENITE, Del Rio. (Carbonate of Tellurium and Bi-carbonate of 



Nickel.) 

 HISINGERITE, BerzeL Sectile. Soft. Sp. Gr. 3-04. C. black. 



Streak, greenish, grey. Fracture earthy. 

 HYDRO-CARBON, Scherer. Sp. Gr. 0-65. L. nacreous. White, or 



yellowish-white. Crystals acicular. 

 HYDROFHYLLITE, Hausmann. 

 HYDROSILICITE, Kuh. C. white, without lustre ; feels greasy, is soft 



and translucent : does not adhere to the tongue. 



I. 



IODIDE OF MERCURY, Del Rio. Resembles dark colored Cinnabar. 



IODIDE OF SILVER, Vauquelin. 



IRID-OSMIUM, Schwetzau. In low six-sided prisms. H. 5-0. ..6-0. 



Sp. Gr. 17-9.. .18-5. C. lead-grey. 

 IRON-SINTER. Sp. Gr. 2-4. L. res. C. yellowish and blackish-brown. 



Brittle. Fracture conchoidal. 



K. 



KNEBILITE, Lenz. Hard. Sp. Gr. 3*7. L. glistening. C. grey, red, 

 brown and green. Opake. Fracture imperfectly conchoidal. 



KORNITE, Breit. 



KUPFERINDIG, Breit. Soft. Sp. Gr. 3-8. L. faint res. C. blue. In 

 plates forming spheroidal shapes, and impalpable. 



L. 



LEELITE, Clark. Sp. Gr. 2-7. Lustre and translucency like horn. 



Massive. Fracture splintery. 

 LIGURITE, Viviani. Crystallized. H. above 50. Sp. Gr. 3'49. L. 



between vit. and res. C. apple-green. Frac. uneven, 



M. 



MELLILITE. In crystalline grains. H. 6-0...6'5. C. yellowish or 



reddish-brown. 

 MINERAL HYDRO-CARBON, In acicular crystals, Sp. Gr. 65 ? L. 



nacreous. C. yellowish-white. 



21* 



