Pratt — Mineralogical Notes from North Carolina. 127 



The specific gravity is 3'64 and was determined upon several 

 different samples. Iron and chromium were very carefully 

 tested for, but no trace of either was observed in the analysis, 

 which showed only the presence of alumina and silica. 



Pale green cyanite has been obtained from a number of 

 localities and it has also been found in the vicinity of the green 

 cyanite locality on the farm of Isaac English of Spruce Pine, 

 Mitchell Co., imbedded in an undecomposed mica schist. 

 Another occurrence that is worthy of note is that of Graves 

 Mt., Georgia. At this locality thin small plates of the pale 

 green cyanite are associated with well crystallized rutile. 



Zircon. — Some specimens of zircon crystals were obtained 

 of Messrs. Geo. L. English & Co., from New Stirling, Iredell 

 Co., North Carolina, and on account of their size and develop- 

 ment it has been thought a description of them would be of 

 interest. 



The crystals are all very similar in their habit, in which the 

 unit pyramid is strongly developed while the prisms faces are 

 short, figs. 1 and 2. Fig. 1 represents the majority of the 



crystals, where the prism of the first order is only slightly 

 developed, at times being hardly perceptible. Those repre- 

 sented by fig. 2 are similar in their habit to some zircon crys- 

 tals described by the author from the townships of Dungannon 

 and Faraday, Ontario.* 



The following forms were observed on these crystals : 



a, 100; m, 110; p, 111; v, 221; x, 311. 



The face x, 311 was only observed on a very few of the crys- 

 tals and was but slightly developed. The crystals are all well 

 developed with smooth faces, making them well adapted for 

 measurement on the reflecting goniometer. Although the 

 author had no reflecting goniometer at hand, the faces were 

 readily identified by means of the contact goniometer. 



The crystals vary in size from l cm to 2'5 cm in diameter and 

 are of a reddish-brown color. 



♦This Journal, vol. xlviii, p. 215, September, 1894. 



