294 PHYSIOGRAPHY. 



Zurlite. 



ZOISITE. (See Epidote.) 

 ZURLITE. 



Form, rectangular four-sided prisms, lengthened in the direc- 

 tion of the axis, and having sometimes their lateral edges repla- 

 ced. 



Cleavage indistinct. Fracture conchoidal. Surface rough, 

 generally covered with a white coating, sometimes convex. 



Lustre resinous. Color asparagus-green. Streak pearl-grey. 



Hardness about 6-0. Sp. gr. =3-274. 



1. It is infusible before the blow-pipe, but yields with borax, a bluish 

 glass. Nitric acid dissolves it, partly, with effervescence and assumes a 

 yellow color. 



It is found at Somma, with Dolomite. 



