New Specific Gravities of Minerals. 



271 



77. 

 78. 

 79. 

 80. 

 81. 

 82. 



83. 



84. 



85. 

 86. 



2.708, 

 4.262, 

 4.254, 

 2.989, 

 2.982, 

 3.263, 



4.684, 



4.211, 



Eugnostic calcareous spar. 

 > Rutile of distinct semi-metallic lustre, from Freiberg. 





4.330, 

 3.829, 



87. 3.336, 



Calcareous spar, from Schneeberg. 



Pyroxene of green color, from the greenstone in 



Voigtland. 

 Axotomous iron ore, from Essex County, N. Y., 



America. 

 Probably a new iron ore which forms with the above 



a uniform coarse granular mixture and resembling 



the magnetic iron ore. 

 Flesh colored sulphate of barytes, from Freiberg. 

 Yellow garnet of North America, identical with the 



aplome-garnet, from Franklin, N. J. 

 A pyroxene distinctly prismatic, by the name of 



ferro-silicate of manganese, from Franklin, N. J. 



which bears great resemblance with the manganif- 



erous pyroxene, from Sweden, but is not identical. 



> Rosy calcareous spar, from Freiberg. 



> Berthierite, from Freiberg. 



Tremolite, from New York. 



Polymorphous calcareous spar, accompanying the 



yellow garnet, from Franklin, N. J. 

 Magnetical iron ore from the Uralian Mountains. 

 Sideritic pyroxene or JefFersonite, from N. J. 

 The true Hedenbergit, from Tunaberg, Sweden, and 



appears to be in all its characters identical with 



JefFersonite. 

 Nordenskioldite, from Olonetz. 

 The real Mesotype of Berzelius. 

 Peach red calcareous spar, from Schneeberg. 

 Pseudomorphous crystals of Gay Lussite, Mansfield. 

 White hemidomatic pyroxene, from Finland. 

 Sphene of changeable colors, from Tyrol. 

 A massive brown iron ore, from Bohemia. 

 Grey antimony, fine crystalized, from Freiberg. 

 Zinciferous iron, from New Jersey. 

 Micaceous iron, from Tyrol. 



