﻿153 
  

  

  YTTRO-CERITE. 
  

  

  The 
  occurence 
  of 
  this 
  very 
  rare 
  mineral 
  in 
  the 
  limestone 
  of 
  Orange 
  

   county, 
  N. 
  Y., 
  was 
  first 
  noticed 
  by 
  Mr. 
  Alger. 
  

  

  It 
  presents 
  all 
  the 
  characters 
  of 
  the 
  mineral 
  from 
  Finbo, 
  in 
  Sweden, 
  

   and 
  cannot 
  be 
  distinguished 
  from 
  it 
  in 
  hand 
  specimens. 
  (Me?noirs 
  of 
  

   the 
  Boston 
  Nat. 
  Hist. 
  Soc. 
  ii, 
  p. 
  88.) 
  It 
  occurs 
  in 
  grains 
  of 
  a 
  beautiful 
  

   purple 
  color, 
  resembling 
  fluor 
  spar 
  for 
  which 
  it 
  has 
  heretofore 
  passed 
  

   among 
  the 
  New- 
  York 
  mineralogists. 
  I 
  have 
  specimens 
  from 
  Amity, 
  

   in 
  Orange 
  county, 
  associated 
  with 
  talc 
  and 
  other 
  minerals 
  in 
  white 
  

   limestone. 
  

  

  