IMONITE  DEPOSITS  OF  EASTERN  NEW  YORK  AND  WESTERN 
NEW  ENGLAND. 
By  Edwin  C.  Eckel. 
INTRODUCTION. 
During  the  early  summer  of  1004  the  writer  visited  most  of  the 
on  districts  of  New  York  and  western  New  England.  The  work 
one  was  purely  in  the  nature  of  a  reconnaissance  and  was  designed 
3  supply  data  for  comparison  of  these  classic  iron-ore  deposits  with 
lose  of  the  Southern  States.  It  is  hoped,  however,  that  a  more 
etailed  examination  can  be  made  during  the  field  season  of  1905. 
The  iron  deposits  discussed  in  the  present  paper  are  the  brown 
Bmatite  ore  bodies  in  New  York  east  of  the  Hudson  River  and  in  the 
Ijoining  counties  of  New  England. 
Aside   from  the  present  economic  importance   of  certain   of  the 
•own  hematites  of  this  region  as  sources  of  the  famous  Salisbury 
on,   the   deposits   are   of   widespread   scientific   interest   as  typical 
)dies  of  the  so-called  "  Cainbro-Sihirian  limonites  "  that  are  worked 
om  Pennsylvania  to  Alabama  along  the  Great  Valley.     Recent  dis- 
issions  of  the  age  and  origin  of  these  ores  in  Pennsylvania,  Virginia, 
eorgia,  and  Alabama  have  developed  very  marked  points  of  dis- 
jreement  between  the  various  geologists  and  mining  engineers  who 
tve  studied  the  deposits  in  different  localities.     It  is  to  be  noted 
at  all  these  recent  studies  have  been  carried  on  in  the  territory 
uth  of  the  glaciated  region.     This  southern  area,  though  of  great 
onomic  importance,  is  unfavorable  to  such  studies,  because  of  the 
eat  amount  of  decomposed  rock  which  must  be  penetrated  before 
tisfactory  exposures  can  be  found.     In  New  York  and  New  Eng- 
Ipd,  on  the  other  hand,  the  glacial  sheet  effected  the  removal  of  all 
me  old  land  waste,  and  the  outcrops  of  all  rocks  are  comparatively 
fpsh.     To  this  fortunate  condition  is  due  the  fact  that  certain  deter- 
n  nations  as  to  origin  and  occurrence  of  the  ores  can  be  made  readily 
i:  the  region  in  question.     A  partly  counterbalancing  disadvantage, 
hlwever,  is  that  the  geologic  history  of  the  northern  region  precludes 
tfe  possibility  of  procuring  direct  evidence  as  to  the  age  of  the 
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