No. 50.] 
91 
Stellite — A new mineral described by Dr. Thomson, and which will 
be more particularly noticed in the appendix to this report. Also, 
prehnite, dathoHte and stilbite. 
Nemahte, resembling asbestus. 
Calcareous spar, nearly in the form of cubes, the cuhoide of Hauy ; 
and the same assuming the form of datholite, for which it may be mis- 
taken. The action of dilute muriatic acid, however, will serve to dis- 
tinguish them. 
Galena — In minute crystals or grains. 
Apophylhte. This occurs in a variety of forms at Bergen Hill. 
Stillbite. Sometimes colourless, and sometimes of a straw colour. 
Chabazie occurs at Bergen Hill, but I have not yet found well charac- 
terized specimens in Rockland. 
There is another interesting locality at Stony-Point, near the light- 
house. On the western side of this Point, there is a coarsely crystal- 
lized hornblende, and with this is associated the mineral usually called 
kerolite, or magnesite. Two parallel dykes of trap pass up the north- 
western face of the Point, and are distinctly visible by a coating of white 
magnesian minerals. The rock which has formed the wall of these dykes 
has disintegrated, and the debris cover the whole of the side hill. The 
trap is filled with veins of kerolite of different varieties, some of which 
closely resemble those of Hoboken and Staten-Island. There are also 
other magnesian minerals, and veins of a beautiful silky amianthus are 
not uncommon. 
About two and a half miles west of Grassy-Point, there is a beauti- 
ful variegated marble, which is susceptible of a fine polish, but it does 
not appear to be abundant. Associated with this, are sometimes found 
epidote, crystallized hornblende, and feldspar. A quarry of dove-co- 
loured marble occurs on the banks of the Minischecongo creek. The 
following is its composition in 100 parts, viz. 
Insoluble matter, consisting of silica and alumina, 3 . 75 
Carbonate of lime, 93. 50 
Moisture and loss, 2. 75 
So that it is sufficiently pure to be burned into lime.* 
* A blue limestone, found near Stony-Point, and which is used for obtaining lime at 
New-Brunswick, New-Jersey, contains 
Silica and alumina, 7.25 
Carbonate of lime, 92.75 
