Mineralogy of Orange County, JV. 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 hair-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 per- 

 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 Augite, 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 

 of the 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 accelere of Haliy. 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 

 to an inch in diameter. Dr. Young possesses a crystal from this 

 place, four inches long by three in breadth. So peculiar is this 

 Hornblende in its color, that it has obtained in collections, the dis- 

 tinctive name of Edenite, from its locality. In some specimens, it 

 is 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 Ruiile. The 

 Brucite is thickly disseminated through Limestone bowlders, in 

 grains of large dimensions and very handsome colors, as orange- 

 yellow and garnet-red ; the same masses frequently embracing crys- 

 tallized, greenish Hornblende, which has been designated Pargasite. 

 Associated with the Brucite, in the same aggregate, is found a well 



