﻿149 
  

  

  CACOXENITE. 
  

  

  (Mineralogy 
  of 
  New- 
  York, 
  page 
  402.) 
  

  

  This 
  mineral 
  is 
  liable 
  to 
  decomposition, 
  even 
  in 
  the 
  closed 
  drawers 
  

   of 
  a 
  cabinet. 
  My 
  specimens 
  from 
  the 
  Sterling 
  iron 
  mine 
  in 
  Jefferson 
  

   county, 
  at 
  the 
  end 
  of 
  2 
  or 
  3 
  years 
  entirely 
  lost 
  their 
  silky 
  lustre, 
  and 
  

   were 
  converted 
  into 
  a 
  dull 
  yellowish 
  powder. 
  

  

  BABINGTONITE. 
  

   (Mineralogy 
  of 
  New- 
  York, 
  page 
  407.) 
  

  

  The 
  composition 
  of 
  this 
  mineral 
  as 
  determined 
  by 
  Dr. 
  E. 
  D. 
  Thom- 
  

   son 
  is 
  as 
  follows: 
  silica 
  47*46; 
  protoxide 
  of 
  iron 
  16*81; 
  protoxide 
  of 
  

   manganese 
  10*16; 
  alumina 
  6*48; 
  lime 
  14*74; 
  magnesia 
  2*21; 
  wa- 
  

   ter 
  1*24. 
  This 
  analysis 
  approaches 
  one 
  by 
  Bonsdorff 
  of 
  a 
  black 
  horn- 
  

   blende 
  from 
  Nordmark 
  and 
  Pargas, 
  the 
  magnesia 
  being 
  replaced 
  by 
  

   manganese 
  in 
  Babingtonite. 
  Phil. 
  Mag. 
  fy 
  Ann,, 
  xxvii., 
  123. 
  

  

  ZINC 
  BLENDE. 
  

   (Mineralogy 
  of 
  New- 
  York, 
  page 
  408.) 
  

  

  The 
  occurrence 
  of 
  this 
  species 
  in 
  the 
  calciferous 
  sandrock, 
  one 
  or 
  two 
  

   miles 
  N. 
  E. 
  of 
  Glen's 
  Falls, 
  in 
  Warren 
  county, 
  is 
  mentioned 
  by 
  Dr. 
  

   Emmons. 
  Rep. 
  on 
  Geol., 
  2d 
  Dist., 
  p. 
  180. 
  

  

  GALENA. 
  

   (Mineralogy 
  of 
  New- 
  York, 
  page 
  412.) 
  

  

  Various 
  crystalline 
  forms 
  of 
  galena 
  occurring 
  at 
  the 
  Nash 
  vein 
  in 
  

   St. 
  Lawrence 
  county, 
  are 
  noticed 
  by 
  Dr. 
  Emmons. 
  Rep., 
  on 
  Geol, 
  2d 
  

   Dist., 
  p. 
  356. 
  

  

  For 
  some 
  remarks 
  on 
  the 
  singular 
  crystals 
  of 
  this 
  mineral 
  found 
  at 
  

   Rossie, 
  St. 
  Lawrence 
  county, 
  by 
  Mr. 
  J. 
  E. 
  Teschemacher, 
  see 
  Phil 
  

   Mag. 
  fy 
  Ann., 
  xxv., 
  p. 
  232. 
  

  

  The 
  crystals 
  of 
  galena 
  from 
  Eossie 
  are 
  sometimes 
  very 
  singularly 
  

   constituted. 
  Alger 
  introduces 
  a 
  figure 
  representing 
  a 
  crystal 
  of 
  the 
  

  

  