. . 



4 



Mineralogical Notices. 395 



cleavage. Octahedral and cubic :crystals of magnetic iron some- 

 times incrust cavities in the ston# or brick work of the furnaces. 



The chytophyUitej (p. 35,) has the/ormula {H Ca) (§i,Si), and 

 consists of •; - . 



Si 51 Fe -• • Ca 



54-S9'7 6-018 20-794 ^ 20-346=10M15 



It is foHated columnar, not unlike some kyanite, with the color 

 pearl gray, having a shade of lavender blue. Luster of folia be- 

 tween vitreous and pearly; translucent, when thin. Specific 

 gravity at 15^ R. 2-940. H.=5'5. Breaks with difficulty being 

 tough. B.B. fuses easily with intumescence to a greenish-black 

 glass, not magnetic. 



iVe^^J American localities of Minerals; by F. B. Hough, A.M., 

 M.D. (Communicated for this Journal.) — Sulphate of B aretes, 

 in a highly crystallized form, associated with an extremely unc- 

 tuous variety of specular iron ore and serpentine, on the farm of 

 James Morse, in Gouverneur. Specimens from this place are full 

 of angular cavities from the intersection of tabular crystals. 



Chondrodite occurs abundantly disseminated through white 



hmestone, about three-fourths of a mile west of Somerville, in 



the town of Rossie. This is the only place where it has been 



observed in quantity in Northern New York. It is associated as 

 usual with 



Spinel^ in perfect octahedrons with but few modifications. The 

 latter mineral is of a pale rose color, and when in small crystals, is 

 nearly transparent. They occur from an inch io less than a line 

 in diameter and are frequently grouped together in great numbers. 

 The large crystals aje quite rare, but the smaller ones are common. 



Apatite^ in the town of Gouverneur, about two miles north of 

 Somerville. Large crystals occur through the soil and in the 

 subjacent limerock. Most of those hitherto procured have been 

 from the partially decomposed rock.- 



One crystal had a length of one foot and a diameter of two 



inches. 



perfect 



terminal planes which are covered with pits and irregular indenta- 

 tions. The quality is very poor, but doubtless translucent and 

 highly colored specimens might be obtained from the rock. 



Sphene^ in large brown crystals, has been obtained from the 

 town of Macomb, in the vicinity of Pleasant Lake. The quality 

 IS very inferior, and crystalline form imperfect. 



Galena and Zinc Blende, have been observed in considerable 

 quantities in the town of Macomb, about half a mile from the 

 Wilson Lead Mine. It is on the land of James Averil, and is 

 owned by that gentleman and Messrs. Wilson and Smith. These 

 ores occur disseminated through a friable limestone rock, to the 

 ^idth of several feet, and nromise a profitable yield of these met- 



