260 The American Geoloyist. October, i^9G 
lilotitt' appears in tabular liexagonal crystals or in a })eciil- 
iar blade-like habit, with very marked elongation in one direc- 
tion. The color is dark greenish-brown or black. The uni- 
axial character can be seen with tlie polariscope. 
In some places little glistening scales of a silvery mica are 
foiind on the feldspar. 
(jKdrf.z. usually massive, is a very common mineral in this 
locality and occurs in large masses or mixed with feldspar as 
pegmatite. The color varies from white through shades of 
gray to a very dark smoke color. Kose quartz is often met 
with, some of a very deep, rich color being found at A. Hob- 
by's quarry. A few rather fine smoky quartz crystals have 
been found at F. H. Kinkel's quarry. The quartz shows posi- 
tive evidence of having been formed subsecjuent to the mica, 
as in some eases beautiful step-like casts of the mica plates 
can be seen in the quartz, 
'/'oiir))i((/liU' is very plentiful, esjjecially at P. H. Kinkel's 
quarry. It is black in color, with an elongated prismatic 
habit, the prism faces showing marked striations. The fol- 
lowing common forms have been observed : 
The trigonal prism (1010), /; the prism of the second order 
(1120), /-2; the unit rhombohedron (1011),/?: and in one 
case the ;? rhombohedron (0221), — 2. 
('rystals of large size are found at A. Hobby's quarr}^ but 
no doubly terminated crystals have as yet been collected. 
When tested with the blowpipe the tourmaline gave the boron 
flame, with the boracic acid flux, and fused rather easily with 
intumescence to a black glass. 
Uraninife.* Two quitelarge specimens of this mineral were 
found in a dump heap in P. H. Kinkel's quarry, ver}' near 
where the autunite occurs. The mineral is black, with pitch- 
like lustre and the characteristic conchoidal fracture of uran- 
inite. The test for Ur, was obtained with the blowpipe. 
Uranofile or uranophane occurs as a yellow powder or crust 
on the uraninite. 
A careful but unsuccessful search was made for the rare 
minerals monazite and xenotime, which have been found in 
the pegmatite on Manhattan island. Monazite has also been 
*Uraninite has also been noted in a feldspar quarry at Middleton, 
Conn., and a pegmatite vein at Branehville, Conn. 
