﻿151 
  

  

  Rose's 
  analysis 
  of 
  the 
  sphene 
  of 
  Zillerthal 
  gave 
  the 
  following 
  results 
  : 
  

   silica 
  32-29; 
  titanic 
  acid 
  41*58; 
  oxide 
  of 
  iron 
  1*07; 
  lime 
  29-60. 
  

   The 
  analysis 
  was 
  effected 
  by 
  sulphuric 
  acid, 
  and 
  the 
  details 
  are 
  given 
  

   in 
  the 
  Phil. 
  Mag. 
  fy 
  Ann. 
  xxvii. 
  p. 
  560. 
  

  

  A 
  new 
  process 
  for 
  the 
  analysis 
  of 
  this 
  mineral, 
  invented 
  by 
  Fuchs, 
  

   is 
  described 
  in 
  Berzdius 
  1 
  Annual 
  Rep. 
  for 
  1845, 
  p. 
  178. 
  

  

  The 
  Lederite 
  of 
  Shepard, 
  it 
  now 
  appears, 
  is 
  identical 
  with 
  common 
  

   sphene 
  in 
  its 
  crystallographic 
  and 
  other 
  characters. 
  The 
  accompanying 
  

   figure 
  illustrates 
  its 
  crystallization. 
  

  

  ADDITIONS 
  

  

  Of 
  Mineral 
  Species 
  found 
  in 
  this 
  State 
  since 
  the 
  date 
  of 
  the 
  publication 
  

   of 
  the 
  Mineralogy 
  of 
  New- 
  York, 
  

  

  COLUMBITE. 
  

  

  This 
  mineral 
  has 
  been 
  found 
  by 
  Dr. 
  Leonard, 
  associated 
  with 
  chryso- 
  

   beryl 
  at 
  the 
  remarkable 
  locality 
  in 
  the 
  town 
  of 
  Greenfield, 
  Saratoga 
  

   county. 
  

  

  LOXOCLASE. 
  

  

  This 
  name 
  has 
  been 
  applied 
  by 
  Breithaupt 
  to 
  a 
  mineral 
  received 
  from 
  

   Prof. 
  Shepard. 
  It 
  was 
  found- 
  in 
  Hammond, 
  St. 
  Lawrence 
  county, 
  with 
  

   pyroxene, 
  graphite 
  and 
  calcareous 
  spar. 
  In 
  many 
  respects 
  it 
  resembles 
  

   oligoclase 
  (soda 
  spodumene 
  ;) 
  color 
  yellowish-gray, 
  yellowish-white, 
  pea 
  

   yellow 
  and 
  blueish 
  gray. 
  Lustre 
  between 
  vitreous 
  and 
  greasy; 
  pearly 
  

   on 
  the 
  most 
  perfect 
  cleavage 
  surface. 
  Primary 
  form 
  an 
  oblique 
  rhom- 
  

   bic 
  prism. 
  P. 
  on 
  M. 
  93° 
  45', 
  P. 
  on 
  T. 
  115° 
  30'. 
  

  

  