No. 50.] '^'9 
Adularia, crystallized; and fetid feldspar— The former found in 
veins of quartz ; the latter in hme stone. 
Stilbite, red — On gneiss near the rail-road tunnel. 
Mesotype — In cavities and veins in greenstone bowlders. Perhaps 
the stelHte of Dr. Thomson. (See appendix.) 
Epidote — Small crystals in veins of gneiss. 
Amianthus — Associated with serpentine. 
Chlorite — On the Hudson and in bowlders. 
Mica, laminated and in six sided tables. 
Tourmaline, the common and the blue, or indicolite. — On the Har 
Isem rail-road. 
Apophyllite — In greenstone bowlders. 
Iron pyrites, in cubes and dodecahedrons — Limestone quarries. 
Rutile, or oxide of titanium — In the limestone quarries near Kings- 
bridge. 
Sphene — With the preceding. 
Beryl — In small, pale green, semi-transparent crystals, in granite. — 
{Pierce <^ Torrey^ in Cleveland.) 
Staurotide — On the banks of the Hudson, in mica slate. 
Sulphuret of molybdenum — In gneiss. — {Pierce <^ Torrey.) 
NIAGARA COUNTY. 
The mineral localities of this county, although at present not nume- 
rous, are such as to attract the attention of the traveller. The most 
important of these are in the immediate vicinity of the Falls of Niagara, 
and at the deep rock excavation near Lockport. The geodes which are 
here found in the limestone contain specimens of uncommon beauty, 
consisting of sulphate of strontian, calcareous spar, anhydrous sulphate 
of lime, selenite, pearl spar and occasionally fluor spar, and sulphuret 
of zinc. These minerals undoubtedly exist in many other parts of this 
county, but in consequence of the extensive operations at Lockport, 
they are there more abundantly obtained than elsewhere. 
Of bog iron ore, there are several localities in Niagara county, but 
none of them are of especial importance. The deposits of calcareous 
tufa are very abundant, particularly near the Falls, from which it is 
evident that the waters of Lake Erie hold in solution a portion of car- 
bonate of lime. 
