﻿137 
  

  

  SCAPOLITE. 
  

   (Mineralogy 
  of 
  New-York, 
  page 
  329.) 
  

  

  Imperfect 
  crystals 
  of 
  scapolite 
  have 
  been 
  found 
  in 
  Putnam 
  Valley, 
  

   Putnam 
  county, 
  by 
  Mr. 
  Cyrus 
  Fountain. 
  

  

  In 
  regard 
  to 
  the 
  specimens 
  heretofore 
  described, 
  I 
  have 
  to 
  remark, 
  

   that 
  some 
  of 
  those 
  from 
  Brush's, 
  in 
  Monroe, 
  Orange 
  county, 
  resemble 
  

   the 
  wernerite, 
  from 
  Franklin, 
  N. 
  J. 
  They 
  are 
  in 
  the 
  form 
  of 
  small, 
  

   irregularly 
  crystallized 
  masses, 
  and 
  are 
  imbeded 
  in 
  a 
  reddish 
  carbonate 
  

   of 
  lime. 
  I 
  formerly 
  supposed 
  the 
  mineral 
  to 
  be 
  apatite. 
  The 
  following 
  

   notices 
  may, 
  also, 
  be 
  here 
  itroduced 
  : 
  

  

  The 
  specimens 
  from 
  Fall 
  Hill, 
  in 
  Orange 
  county, 
  melt 
  into 
  a 
  darker 
  

   colored 
  globule 
  than 
  any 
  others 
  which 
  I 
  have 
  tried. 
  They 
  are 
  asso- 
  

   ciated 
  with 
  a 
  dark 
  colored 
  pyroxene, 
  which 
  will 
  account 
  for 
  their 
  larger 
  

   proportion 
  of 
  oxide 
  of 
  iron. 
  

  

  Analysis 
  has 
  proved 
  that 
  the 
  specimens 
  of 
  scapolite 
  from 
  Ticonde- 
  

   roga, 
  in 
  Essex 
  county, 
  are 
  similar 
  in 
  composition 
  to 
  some 
  of 
  the 
  foreign 
  

   ones, 
  although 
  the 
  proportion 
  of 
  alkaline 
  matter 
  is 
  larger. 
  

  

  Nicol, 
  in 
  his 
  Manual 
  of 
  Mineralogy, 
  published 
  during 
  the 
  present 
  

   year, 
  describes 
  nuttallite 
  as 
  a 
  distinct 
  species. 
  A 
  recent 
  analysis 
  made 
  

   in 
  the 
  laboratory 
  of 
  Prof. 
  B. 
  Silliman, 
  Jr., 
  confirms 
  the 
  statement 
  made 
  

   in 
  my 
  report, 
  of 
  its 
  identity 
  with 
  scapolite. 
  The 
  composition 
  of 
  a^ 
  

   specimen 
  from 
  Bolton, 
  Mass., 
  as 
  thus 
  determined, 
  is 
  as 
  follows 
  : 
  

  

  Silica, 
  - 
  - 
  - 
  - 
  - 
  . 
  - 
  - 
  45-79 
  

  

  Alumina, 
  - 
  - 
  30- 
  11 
  

  

  Peroxide 
  of 
  iron, 
  l'S6 
  

  

  Lime, 
  17-40 
  

  

  Potash, 
  3-49 
  

   Soda, 
  

  

  M 
  trace, 
  

  

  anganese, 
  

  

  Water, 
  ...... 
  1-63 
  

  

  100-2S 
  

   (Silliman's 
  Journal, 
  Nov., 
  1849, 
  p. 
  394.) 
  

  

  