New Specific Gravities of Minerals. 
The same, from Schneeberg. 
_ The same, from Freiberg. 
The same, fine white, resembling the nickel pyrites, 
frorn Schneeberg. 
The same, of regular crystalline dentritic conglome- 
rates, from Schneeberg. 
we ms Ba se and reticulated iron pyrites, 
Schne 
Rasthiteite, froin the Auvergne. 
Diatome Wolframite, from Brazil. 
White nickel pyrites, (biarsenide of nickel,) Schnee- 
ber 
erg. 
Fragments of a large crystal of titanite—variety from 
Arendal. 
Yellowish white tetartine felsite, (tetartin,) accompa- 
nying the topaz crystals of the Uralian Mountains. 
Native bismuth, from Brazil. 
A mineral from near Bonn, said to be Allophane. 
Supposed to be an artificial product. 
Brass from a pga age 
The same. 
74 t4 
Ouwarowite, from Bisersk, Uralian Mountains. 
Manganiferous ore, Saxony. 
The true Sarkolite, from Vesuvius. 
A green pyroxene, accompanying the sarkolite. 
Hydrolite or Gmelinite, from Scotland. 
Fiedler’s Chloritoid, from the Uralian Mountains, ac- 
companying the diaspore and has the structure 0 
mica. 
Manganesian epidote, from Piedmont. 
Topaz, from Uralian Mountains. 
Chrysocolla, from Mexico. 
Tautokline calcareous spar, R=106° 10’, Saxony- 
Dark greenish white arragonite, from Silesia. 
Zeolite, fibrous radiated, from Bohemia, belonging 
perhaps to comptonite. 
