“In account of the New Jersey Sapphire. 319 
Art. XI—An account of the Sapphire and other minerals in 
Newton township, Sussex County, New Jersey ; by Samven 
Fowter, M. D. 
Tue valley including Sparta, Franklin, Warwick and Newton, for 
its mineral treasures, useful as well as curious, has very justly been 
compared to Arendal, in Norway ; both regions abound with magnetic 
ore of iron, connected also with the same rock formations, but neither 
of them is truly primitive, though including beds of gneiss and granitic 
sienite, All the peculiarly curious minerals of this region are uniform- 
ly connected with, subordinate beds of white crystalline limestone, and 
they occur chiefly near the line of junction which this rock forms with 
the granitic sienite. In this situation occur the spinelles, ceylonites, 
garnets, &c. as well as the beds of curious zinc, and manganesian 
ores ; and most of them are entirely peculiar to this part of the world. 
This valley continues uninterruptedly from Byram, in the county of 
Sussex and state of New Jersey, which is the south western extremity 
of the white carbonate of lime, to mounts Adam and Eve, in the 
township of Warwick, in the county of Orange and state of New 
York, which is the north eastern extremity of the white limestone, a 
distance of twenty five miles. In this whole distance we observe the 
white carbonate of lime running in a north easterly and south wester- 
direction. The Franklinite and red zine ore accompany the same, 
beginning half a mile north-east of Franklin Furnace, and ending 
Wo miles south-west of Sparta, a distance of nine miles. It is in 
different parts of the township of Warwick that so many curious 
and splendid things have occurred ; and it is here the calcareous 
Valley is the widest. Several years ago, sapphire as well as spinelle . 
Was discovered at Franklin, but apparently only in a single block of 
“tone probably detached from its original bed, so that the spot was 
Sooner discovered than exhausted, and all subsequent attempts to 
race out more of this interesting mineral have proved in vain. It 
_ Was blue and white or particolored, and imbedded in a rock of com- 
Pact seapolite and feldspar, in connection with black spinelle and 
black tourmaline. 
t four years since, in company with my neighbor, Mr. Inglis, 
lm the township of Newton, six miles from Franklin and one mile 
, Nestof the calcareous bed of Byram, we discovered sapphire im- 
dded in a whitish feldspar, near the junction of the granitic sienite 
