Mineralogy of Orange County, N. Y. 325 
in dimensions from one line to half an inch in diameter, are termina- 
ted at both extremities by dihedral summits, reposing on the lateral 
solid angles, and very often modified by the truncation of the lateral 
edges. ‘They are short, in proportion to their length; and possess 
unusually brilliant cleavages, which take place, not only parallel with 
the lateral, but with the terminal planes. ‘Their colors are a leek- 
green, grass-green and shair-brown. Next to the Hornblende, the 
crystals of Zircon are worthy of mention. These are contained in 
the same aggregate as the Hornblende, though for the most part im- 
bedded in the Scapolite. They are very small, but eminently pur 
fect, and possessed of the highest finish, as respects their lustre. 
The form is that of four-sided prisms, surmounted by four-sided 
pyramids, having the edges between the pyramid and prism trun- 
cated. Their color is a chocolate-brown. The Scapolite is always 
massive, and usually without discernible cleavages. ‘The other min- 
erals which occur at this spot, are Mugite, Brucite, Spinel and purple 
‘Fluor; but these last in specimens, for the most part, undeserving of 
regard. 
The next locality south of the one just described, is upon land 
owned by H. W. Raynor, and situated three quarters of a mile north 
ofthe village of Edenville. It is marked No. 9 on the map. This 
spot affords a handsome hair-brown Hornblende, in highly perfect 
crystals of the form above described, though occasionally with ter- 
minations more complicated, among which may be found the modi- 
fication denominated Amphibole acceléré of Haiiy. The prisms are 
sometimes very short, insomuch that the terminal faces come into 
Contact. The crystals are disseminated through an aggregate of 
White Limestone and brown Mica, and vary in size from very small 
0 an inch in diameter. Dr. Young possesses a crystal from this 
Place, four inches long by three in breadth. So peculiar is this 
Aorblende in its color, that it has obtained in collections, the dis- 
‘Unetive name of Edenite, from its locality. In some specimens, it 
S nearly white and semi-transparent. ; 
No. 10 upon the map is upon the land of H. W. Houston. The 
most interesting substances it affords are Brucite and Rutile. The 
Brucite is thickly disseminated through Limestone bowlders, in 
ns of large dimensions and very handsome colors, as orange- 
Yellow and garnet-red; the same masses frequently embracing crys- 
Lllized, greenish Hornblende, which has been designated Pargasite. 
Associated with the Brucite, in the same aggregate, is found a well 
