﻿135 
  

  

  HYPEBSTHENE. 
  

   (Mineralogy 
  of 
  New-York, 
  page 
  309.) 
  

  

  Damour 
  has 
  published 
  an 
  analysis 
  of 
  a 
  specimen 
  of 
  this 
  mineral, 
  from 
  

   Labrador; 
  the 
  following 
  are 
  the 
  results 
  : 
  Silica, 
  51-36; 
  protoxide 
  of 
  

   iron, 
  2T27 
  ; 
  magnesia, 
  21-31; 
  lime, 
  3 
  - 
  09 
  ; 
  protoxide 
  of 
  manganese, 
  

   1-30 
  ; 
  alumina, 
  0-37. 
  Phil. 
  Mag., 
  April, 
  1845. 
  

  

  A 
  specimen 
  from 
  Orange 
  county, 
  known 
  by 
  the 
  name 
  of 
  hypersthene, 
  

   is 
  foliated, 
  has 
  a 
  brownish 
  color, 
  and 
  is 
  not 
  unlike 
  feldspar 
  in 
  its 
  ap- 
  

   pearance. 
  Upon 
  analysis 
  it 
  was 
  found 
  to 
  contain 
  the 
  following 
  ingre- 
  

   dients, 
  vie 
  : 
  Silica, 
  59-50 
  ; 
  oxide 
  of 
  iron, 
  12-00 
  ; 
  magnesia, 
  27*75 
  ; 
  (not 
  

   a 
  trace 
  of 
  lime.) 
  In 
  composition 
  this 
  mineral 
  is 
  almost 
  identical 
  with 
  

   Klaproth's 
  bronzite, 
  the 
  hemiprismatic 
  schiller 
  spar 
  of 
  Jameson, 
  [Man. 
  

   of 
  Mineralogy, 
  p. 
  166,) 
  and 
  with 
  the 
  anthophyllite 
  of 
  Thompson, 
  (Out- 
  

   lines 
  of 
  Mineralogy, 
  fyc, 
  ii., 
  p. 
  206.) 
  Some 
  obscurity, 
  therefore, 
  still 
  

   rests 
  upon 
  this 
  species. 
  As 
  before 
  stated, 
  Dana 
  unites 
  hypersthene 
  

   with 
  pyroxene 
  ; 
  but 
  this, 
  it 
  seems 
  to 
  me, 
  is 
  scarcely 
  allowable 
  in 
  the 
  

   present 
  state 
  of 
  our 
  knowledge. 
  

  

  ORDER 
  II. 
  ALUMINA. 
  

  

  SPINELLE. 
  

   (Mineralogy 
  of 
  New-York, 
  page 
  315.) 
  

  

  To 
  the 
  localities 
  of 
  this 
  interesting 
  mineral 
  heretofore 
  given, 
  may 
  be 
  

   added 
  its 
  occurrence 
  in 
  Schroon, 
  Essex 
  county, 
  in 
  pink-colored 
  crystals. 
  

   (Emmons' 
  Pep. 
  on 
  the 
  Geol. 
  2d 
  Dist., 
  p. 
  227.) 
  I 
  have 
  also 
  received 
  

   regular 
  octahedrons 
  of 
  spinelle, 
  having 
  a 
  black 
  color, 
  from 
  Carmel, 
  in 
  

   Putnam 
  county. 
  

  

  I 
  must 
  again 
  refer 
  to 
  the 
  'paper 
  of 
  Dr. 
  Blum, 
  on 
  pseudomorphous 
  

   minerals, 
  (Sill. 
  Jour., 
  xlviii., 
  p. 
  73,) 
  for 
  a 
  notice 
  of 
  the 
  soft 
  spinelles 
  

   described 
  in 
  my 
  report, 
  (p. 
  31S.) 
  

  

  AUTOMALITE, 
  

  

  (Mineralogy 
  of 
  New- 
  York, 
  page 
  319.) 
  

  

  In 
  regard 
  to 
  this 
  mineral, 
  whose 
  existence 
  as 
  a 
  New-York 
  species 
  is 
  

   very 
  doubtful, 
  I 
  have 
  to 
  state 
  that 
  recent 
  examinations 
  have 
  rendered 
  it 
  

   probable 
  that 
  it 
  is 
  identical 
  with 
  dysluite. 
  The 
  two 
  minerals 
  pass 
  into 
  

   each 
  other, 
  and 
  the 
  difference 
  in 
  hardness, 
  color, 
  specific 
  gravity, 
  &c, 
  

   can 
  thus 
  be 
  accounted 
  for 
  by 
  the 
  well 
  known 
  fact 
  of 
  the 
  isomorphous 
  

  

  