568 
GEOLOGY OF THE FIRST DISTRICT. 
esteemed for the furnace, and is said to furnish pig iron, which is easily rendered malleable 
by the processes now employed for that purpose. Under these circumstances it is gratifying 
to be enabled to add, that this bed is of great extent, and if judiciously worked, will undoubt- 
^sdly yield a vast amount of ore. 
Analysis of the magnetic iron from the Long mine, Orange county. 
Protoxide of iron- 25.40 
Peroxide of iron_ 70.50 
Oxide of manganese- 1.60 
Silica or quartz, and loss_ 2.50 
100.00 
These proportions of protoxide and peroxide of iron are equivalent to 68*50 per cent of 
metallic iron.” 
“ The Patterson mine is half a mile southwest of Long mine; ore very similar in all 
respects ; makes excellent red short iron ; is in the granitic rock. The ore is twenty feet thick ; 
opened one hundred and fifty feet long. About ten thousand tons of this ore have been used. 
It is strongly magnetic, and has polarity. About the middle of the mine, as now open, is a 
transverse slip or heave ; the mine and its walls appearing as if they had slid downwards and 
forwards to the southeast, causing an angle in their line of bearing. This mine was discovered 
in 1831, by John Patterson. One thousand tons have been raised annually. Its ore is used 
principally to melt with infusible and bad ores, as O’Neil and lean limonitic ores. Its iron is 
good. 
Mountain mine, Antone mine, Conhlin mine and New mine, are a group from twenty-five 
to fifty rods northwest and north from the Patterson mine, belonging to the same proprietors. 
They lie in nearly parallel beds; the ore of all apparently similar—a rich black magnetic 
oxide, possessing polarity. Ore to the amount of five thousand tons has been used from these 
mines; the ore and walls nearly vertical; layers of ore from four to eight feet thick. The. 
new mine has a cap of rock lying nearly horizontal. Associated minerals, sahlite, hornblende, 
and felspar. The sahlite is laminated and very beautiful; iron red short. 
“ The Mountain mine was discovered in 1758, by a hunter, in consequence of a tree being 
blown up by the roots; yield forty-five per centum; iron remarkable for strength diud fine polish; 
cost of mining, one dollar per ton. Two dykes cross this mine at an angle of forty-five 
degrees, each fifteen inches thick. Before the Revolution, when this mine was chiefly worked, 
the iron was sent to England to be used for tinning. 
“ Crossway mine is four hundred or five hundred yards southwest of Mountain mine. This 
bed is fourteen feet thick, and has been wrought sixty-five feet deep and one hundred and 
fifty yards in length ; ore and iron very similar to those of Patterson mine ; moderately red 
short ; ore and walls nearly vertical. Twenty-eight thousand tons are supposed to have been 
used from this mine. Associated minerals, hornblende, epidote, mica and adularia. This 
