a a a 
ELISHA MITCHELL SCIENTIFIC SOCIETY. 83 
ZIRCON. * 
Some specimens of zircon crystals were obtained of 
Messrs. Geo L. English & Co., from New Stirling, Tre- 
dell Co., North Carolina, and on account of their size 
and development 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. 4and5. Fig. 4 represents 
the majority of the crystals, where the prism of the first 
order is only slightly developed, at times being hardly 
‘perceptible. Those represented by fig. 5 are similar in 
their habit to some zircon crystals described by the au- 
4. 5. 
thor from the townships of Dungannon and Faraday, 
Ontario. t 
The following forms were observed on these crystals: 
ee see VAS ee Es tr, 2212 ake, 
The face x, 311 was only observed on a very few of the 
crystals and was but slightly developed. The crystals 
are all well developed with smooth faces, making them 
well adapted for measurement on the reflecting goniome- 
ter. 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 1°™ to 2°5" in diameter 
and are of a reddish-brown color. 
wa 
#Am. J. Sci. Vol. V, 1898, p. 127. 
+Am, Jour. Sci., vol., xlviii, p. 215, 1894. 
