﻿84 
  TWENTY-FIRST 
  REPORT 
  ON 
  THE 
  STATE 
  CABINET. 
  

  

  with 
  wollastonite 
  and 
  pyroxene. 
  Garnet 
  is 
  moreover 
  of 
  frequent 
  

   occurrence 
  in 
  the 
  strata 
  associated 
  with 
  the 
  limestones, 
  sometimes 
  

   disseminated 
  in 
  grains 
  in 
  the 
  pyroxenites, 
  and 
  more 
  often 
  in 
  

   accompanying 
  beds 
  of 
  quartzite, 
  in 
  which 
  it 
  sometimes 
  forms 
  

   layers 
  of 
  red 
  garnet 
  rock. 
  The 
  strata 
  of 
  gneiss 
  in 
  the 
  vicinity 
  of 
  

   the 
  limestones 
  often 
  abound 
  in 
  garnet. 
  

  

  Idocrase. 
  — 
  This 
  species, 
  although 
  less 
  abundant 
  than 
  garnet, 
  is 
  

   found 
  in 
  several 
  places 
  associated 
  with 
  it. 
  The 
  occurrence 
  in 
  a 
  

   vein 
  of 
  a 
  skeleton-crystal 
  of 
  yellow 
  idocrase, 
  enclosing 
  orthoclase 
  

   and 
  zircon, 
  has 
  been 
  noticed 
  on 
  page 
  50. 
  The 
  same 
  vein 
  affords 
  

   crystals 
  of 
  cinnamon-stone 
  garnet. 
  I 
  have 
  elsewhere 
  described 
  a 
  

   boulder 
  of 
  crystalline 
  carbonate 
  of 
  lime, 
  apparently 
  a 
  veinstone, 
  

   found 
  on 
  the 
  Ottawa, 
  in 
  which 
  were 
  detected 
  small 
  square 
  prisms 
  

   of 
  idocrase, 
  dodecahedrons 
  of 
  garnet, 
  and 
  terminated 
  triangular 
  

   prisms 
  of 
  tourmaline, 
  all 
  three 
  species 
  being 
  of 
  a 
  bright 
  yellowish- 
  

   brown 
  color. 
  

  

  EriDOTE. 
  — 
  This 
  species 
  occurs 
  in 
  several 
  localities 
  in 
  calcareous 
  

   veins 
  among 
  the 
  Laurentian 
  rocks 
  in 
  New 
  York 
  and 
  New 
  Jersey, 
  

   sometimes 
  crystallized 
  with 
  orthoclase, 
  pyroxene 
  and 
  graphite, 
  or 
  

   as 
  described 
  by 
  Prof. 
  Henry 
  Wurtz, 
  imbedded 
  in 
  fine 
  crystals 
  in 
  

   calcite, 
  in 
  Byram, 
  New 
  Jersey. 
  A 
  specimen 
  from 
  Cold 
  Spring, 
  

   New 
  York, 
  exhibits 
  a 
  crust 
  of 
  small 
  crystals 
  of 
  epidote 
  coating 
  a 
  

   large 
  prism 
  of 
  pyroxene. 
  Although 
  not 
  hitherto 
  detected 
  in 
  any 
  

   of 
  the 
  Laurentian 
  veins 
  in 
  Canada, 
  epidote 
  enters 
  largely 
  into 
  the 
  

   composition 
  of 
  the 
  pyroxenic 
  and 
  feldspathic 
  rocks 
  which 
  are 
  asso- 
  

   ciated 
  with 
  the 
  limestones 
  in 
  the 
  vicinity 
  of 
  the 
  iron 
  ores 
  of 
  Bel- 
  

   mont 
  and 
  Seymour, 
  Ontario. 
  

  

  Allanite, 
  which 
  is 
  regarded 
  as 
  a 
  cerium-epidote, 
  occurs 
  in 
  some 
  

   of 
  the 
  Laurentian 
  veins, 
  associated 
  w 
  r 
  ith 
  apatite 
  and 
  tourmaline 
  at 
  

   Ticonderoga, 
  and 
  with 
  quartz, 
  feldspar 
  and 
  magnetite 
  at 
  Port 
  

   Henry, 
  New 
  York. 
  

  

  Zircon. 
  — 
  This 
  species 
  is 
  of 
  frequent 
  occurrence 
  in 
  the 
  calcareous 
  

   veins, 
  associated 
  with 
  pyroxene, 
  hornblende, 
  orthoclase, 
  scapolite 
  

   and 
  sphene. 
  In 
  Munroe, 
  Orange 
  county, 
  New 
  York, 
  crystals 
  of 
  

   zircon 
  abound 
  in 
  a 
  gangue 
  of 
  magnetic 
  iron 
  ore 
  with 
  pyroxene 
  and 
  

   feldspar, 
  and 
  according 
  to 
  Durocher, 
  zircon 
  is 
  also 
  met 
  with 
  in 
  the 
  

   magnetic 
  iron 
  of 
  Solberg, 
  near 
  Arendal, 
  and 
  at 
  Langsoein 
  Norway 
  

   {Ann. 
  des 
  Mines 
  1 
  4J, 
  xv, 
  229). 
  Zircon 
  is 
  also 
  found 
  disseminated 
  in 
  

  

  