﻿139 
  

  

  (Mineralogy 
  of 
  New-York, 
  page 
  342.) 
  

  

  The 
  mineral 
  from 
  the 
  trap 
  region 
  of 
  Bergen, 
  in 
  New-Jersey, 
  and 
  

   Piermont, 
  in 
  Rockland 
  county, 
  New- 
  York 
  ; 
  which 
  I 
  supposed 
  to 
  be 
  the 
  

   stellite 
  of 
  Dr. 
  Thomson, 
  has 
  been 
  the 
  subject 
  of 
  some 
  discussion. 
  

  

  It 
  is 
  stated 
  by 
  Dana, 
  (Mineralogy, 
  2d 
  ed.,) 
  that 
  Mr. 
  A. 
  A. 
  Hayes 
  has 
  

   analyzed 
  the 
  same 
  mineral 
  with 
  quite 
  a 
  different 
  result, 
  as 
  follows 
  : 
  

   Silica, 
  55-96; 
  lime, 
  35-12; 
  soda, 
  6*75; 
  potash, 
  0-60 
  ; 
  alumina 
  and 
  

   magnesia, 
  0-08; 
  protoxide 
  of 
  manganese, 
  0.64; 
  water, 
  (hygrometric) 
  

   0-16;=99 
  - 
  3l. 
  Dana 
  adds 
  that 
  the 
  large 
  per 
  centage 
  of 
  soda, 
  and 
  the 
  

   proportion 
  of 
  silica 
  and 
  lime, 
  would 
  seem 
  to 
  ally 
  the 
  species 
  to 
  pectolite 
  ; 
  

   from 
  which, 
  however, 
  it 
  appears 
  to 
  be 
  removed, 
  by 
  containing 
  no 
  water. 
  

   He 
  has 
  compared 
  specimens 
  of 
  the 
  stellite 
  from 
  Bergen 
  with 
  the 
  foreign 
  

   pectolite, 
  and 
  finds 
  them 
  closely 
  similar 
  in 
  external 
  characters; 
  more- 
  

   over, 
  Frankenheim 
  makes 
  pectolite 
  an 
  anhydrous 
  mineral, 
  stating 
  that 
  

   the 
  water 
  varies, 
  and 
  is 
  not 
  an 
  essential 
  ingredient. 
  

  

  Mr. 
  Alger, 
  in 
  the 
  supplement 
  to 
  his 
  edition 
  of 
  Phillips' 
  Mineralogy, 
  

   (p. 
  624) 
  quotes 
  the 
  same 
  analysis 
  of 
  Hayes, 
  and 
  adverts 
  to 
  the 
  very 
  close 
  

   resemblance 
  in 
  composition 
  and 
  general 
  physical 
  characters, 
  between 
  this 
  

   mineral 
  and 
  three 
  others 
  : 
  the 
  wollastonite 
  and 
  stellite 
  of 
  Thomson, 
  and 
  

   the 
  pectolite 
  of 
  Von 
  Kobell, 
  excepting 
  in 
  its 
  entire 
  freedom 
  from 
  water, 
  

   and 
  its 
  more 
  perfect 
  crystallization. 
  " 
  They 
  undoubtedly 
  all 
  constitute 
  

   but 
  one 
  species, 
  and 
  while 
  they 
  may 
  be 
  most 
  appropriately 
  designated 
  

   under 
  the 
  name 
  of 
  stellite, 
  the 
  chemical 
  title 
  of 
  anhydrous 
  lime 
  (meso- 
  

   lite) 
  is 
  naturally 
  suggested 
  by 
  their 
  crystallographical 
  identity 
  with 
  meso- 
  

   lite, 
  as 
  established 
  by 
  Mr. 
  Teschemacher." 
  

  

  In 
  the 
  number 
  of 
  Silliman's 
  Journal 
  for 
  July, 
  1849, 
  is 
  a 
  short 
  notice 
  

   of 
  pectolite 
  and 
  stellite, 
  by 
  Mr. 
  J. 
  D. 
  Whitney. 
  " 
  Pectolite 
  occurs 
  in 
  

   Isle 
  Royale, 
  Lake 
  Superior, 
  in 
  spheroidal 
  masses, 
  consisting 
  of 
  delicate 
  

   silky 
  fibres 
  radiating 
  from 
  a 
  centre 
  resembling 
  foreign 
  specimens 
  from 
  

   Monte 
  Balco. 
  The 
  stellite 
  of 
  Bergen 
  Hill, 
  New-Jersey, 
  analyzed 
  by 
  

   Beck, 
  has 
  the 
  external 
  characters 
  of 
  pectolite 
  ; 
  and 
  also, 
  as 
  Whitney 
  

   shows, 
  its 
  composition. 
  The 
  following 
  are 
  the 
  results 
  of 
  four 
  analyses 
  :'' 
  

  

  