BY W. F. PETTERD, C.M.Z.S. 205 



localities. Before the blovpipe it fuses with intumescence, 

 colouring the flame purplish-red ; and also reacts for iron. 



356 ZoisiTE (Basiic SiUcate of Calcium and Aluminium). 



This orthorhombic mineral is of unusual occurrence 

 microscopically, but it is an essential constituent of the 

 zoiste-amphibolite which occurs as a schistose rock-belt near 

 the township of Hamilton, River Forth, and the Colling- 

 wood valley. 



