2(5 The American Geologist. July, 1898 
magnetite being found. There are no associated finely crys- 
tallized minerals with the exception of molybdenite. This 
latter mineral is found in quantities as high as 2$ in the oresof 
the Elude mine at Stanhope. N. J., but here it occurs as finely 
disseminated scales or small hunches, more abundantly in the 
lower hornblende ores. Larue crystals have rarely been met 
with at the Hibernia mines. At the Ogden mines, however. 
these crystals are found of great beauty and of remarkable 
size. One crystal in the cabinet of Mr. Thomas Lang, of Og- 
densburg, N. J., is about two inches in diameter and three- 
fourths of an inch thick. Four of the prism faces are perfect, 
while the crystal is attached to a piece of feldspar by the re- 
maining two. A cluster of crystals, six inches in its largesl 
diameter, four inches in its shortest, and one-half of an inch 
thick, was also found there. 
Graphite has never heen observed in these ores by the writer, 
even with special search. 
Apatite is constantly associated with them. At Terro 
Mont is a mine known as the "Canfield phosphate mine," 
which carries over 30^ by weight, of this mineral. The 
Dickerson mine, near by, is also a phosphate-bearing one, 
though in such small quantities that it is not objectionable for 
foundry iron. The same is true of the great deposit at Hiber- 
nia, Hurdtown, Port Oram and Ringwood mines, as well as at 
Sterlington and Forest of Dean mines, in New York state. At 
many of these mines there are great lenses of pure phos- 
phate of lime, but these are so related to the ore bodies 
that no difficulty is experienced in cobbing the mineral from 
the ore. The fact remains, though, that apatite is widel}- dis- 
tributed through all of the ores, rendering them unfit for mak- 
ing Bessemer pig iron. Abundant as this mineral is. it is 
never found in good crystals, it occurs either as grains of va- 
rious sizes from the size of a pea down, or in large crystalline 
lumps. 
Hornblende, quartz, and red and white orthoclase feldspar 
make the usual mine rock. Black mica or biotite is rarely 
found. 
Titanic acid in the form of rutile is occasionally met with. 
but never in injurious quantities. 
Isopyre is found at the Dickinson mine. At the Ringwood 
