﻿64 
  TWENTY-FIRST 
  REPORT 
  ON 
  THE 
  STATE 
  CABINET. 
  

  

  characters 
  and 
  associations, 
  but 
  also 
  in 
  the 
  mode 
  of 
  their 
  occur- 
  

   rence. 
  These 
  resemblances 
  were 
  in 
  fact 
  noticed 
  so 
  long 
  ago 
  as 
  

   1827 
  by 
  Dr. 
  William 
  Meade 
  (Amer. 
  Jour. 
  Science 
  [1], 
  xii, 
  303), 
  

   who 
  called 
  attention 
  to 
  the 
  great 
  similarity 
  between 
  many 
  Scandi- 
  

   navian 
  minerals, 
  particularly 
  from 
  the 
  vicinity 
  of 
  Arenclal, 
  and 
  

   those 
  found 
  in 
  Orange 
  county, 
  New 
  York, 
  and 
  in 
  Sussex 
  county, 
  

   New 
  Jersey. 
  He 
  instanced, 
  among 
  others, 
  the 
  species 
  pyroxene, 
  

   chonclrodite, 
  scapolite, 
  garnet, 
  sphene 
  and 
  ilmenite. 
  Daubree, 
  

   who 
  in 
  1843 
  published 
  an 
  instructive 
  account 
  of 
  his 
  examination 
  

   of 
  the 
  metalliferous 
  deposits 
  of 
  Norway 
  and 
  Sweden, 
  furnishes 
  

   some 
  interesting 
  details 
  of 
  the 
  minerals 
  associated 
  Avith 
  the 
  beds 
  

   of 
  magnetic 
  iron 
  ore 
  in 
  the 
  vicinity 
  of 
  Arendal 
  (Ann. 
  des 
  Mines 
  

   [4], 
  iv, 
  pp. 
  199, 
  282). 
  The 
  ore 
  is 
  here 
  found, 
  sometimes 
  in 
  gneiss, 
  

   and 
  at 
  other 
  times 
  in 
  a 
  gneissoid 
  rock, 
  consisting 
  of 
  various 
  admix- 
  

   tures 
  of 
  pyroxene, 
  hornblende, 
  garnet, 
  epidote 
  and 
  mica, 
  the 
  whole 
  

   associated 
  with 
  crystalline 
  limestones. 
  These 
  strata 
  are 
  cut 
  by 
  

   numerous 
  well 
  defined 
  but 
  irregular 
  veins, 
  which 
  are 
  described 
  

   by 
  Daubree 
  as 
  granitic 
  or 
  syenitic 
  in 
  character, 
  and 
  have 
  yielded 
  

   the 
  following 
  minerals 
  : 
  Orthoclase, 
  scapolite, 
  quartz, 
  apatite, 
  

   lamellar 
  carbonate 
  of 
  lime, 
  hornblende, 
  black 
  mica 
  in 
  large 
  plates, 
  

   garnet, 
  epidote, 
  allanite, 
  gadolinite, 
  axinite. 
  zircon, 
  sphene, 
  spinel, 
  

   specular 
  iron, 
  and 
  more 
  rarely, 
  beryl 
  and 
  leucite. 
  Serpentine, 
  

   chondrodite, 
  lievrite 
  and 
  corundum 
  are 
  also 
  enumerated 
  among 
  

   the 
  minerals 
  of 
  the 
  district, 
  though 
  not 
  especially 
  mentioned 
  by 
  

   Daubree 
  as 
  occurring 
  in 
  the 
  veins. 
  In 
  addition 
  to 
  the 
  species 
  

   already 
  mentioned, 
  these 
  veilis 
  contain 
  datholite 
  and 
  apophyllite, 
  

   with 
  analcime 
  and 
  various 
  other 
  zeolites, 
  which 
  are, 
  however, 
  pos- 
  

   sibly 
  of 
  later 
  origin 
  than 
  the 
  other 
  minerals. 
  These 
  veins 
  some- 
  

   times 
  include 
  irregular 
  fragments 
  of 
  the 
  wall-rock, 
  and 
  present 
  

   cavities 
  lined 
  with 
  crystals, 
  showing, 
  not 
  less 
  clearly 
  than 
  the 
  

   veins 
  which 
  we 
  have 
  mentioned 
  in 
  the 
  Laurentian 
  rocks 
  of 
  Canada, 
  

   that 
  they 
  have 
  been 
  formed 
  by 
  the 
  progressive 
  filling 
  up 
  of 
  fissures 
  

   in 
  the 
  strata. 
  

  

  In 
  some 
  instances, 
  these 
  veinstones, 
  by 
  the 
  absence 
  of 
  calcareous 
  

   and 
  magnesian 
  minerals, 
  become 
  granite-like 
  aggregates 
  of 
  ortho- 
  

   clase 
  and 
  quartz. 
  Daubree, 
  however, 
  having 
  reference 
  to 
  their 
  

   structure, 
  calls 
  all 
  of 
  these 
  veins 
  granitic, 
  though 
  they 
  sometimes 
  

   contain 
  lamellar 
  carbonate 
  of 
  lime. 
  He 
  agrees 
  with 
  Scheerer 
  in 
  

   supposing 
  them 
  to 
  have 
  been 
  filled 
  by 
  segregation 
  or 
  secretion 
  

   from 
  the 
  surrounding 
  strata, 
  while 
  Durocher, 
  on 
  the 
  contrary, 
  re- 
  

   jected 
  this 
  view, 
  and 
  supposed 
  them 
  to 
  have 
  been 
  filled 
  by 
  injection. 
  

  

  