125 



TAB. CLXV. 



FERRUM Scheelatum. 

 Scheelate of Iron, or Wolf rain. 



Syn. Wolfram. De Lisle, i. ii. 311. and'm. 262. 

 Scheelin ferrugine. Haiiy. 



This substance had long retained the German name of 

 Wolfram, although mineralogists were much divided about 

 what class to refer it to, until Scheele had discovered 

 Tungsten. It is found in tolerable quantity in Cornwall, 

 and is said to be mostly found in Tin-Countries. We, how- 

 ever, have specimens from the Isle of Man by favour of 

 His Grace the Duke of Athol, and Lord James Murray. 

 I understand that Tin has formerly been known there. 

 Much Spathose Iron Ore has been found there, very much 

 of the same nature and kind as that figured in tab. 53. of 

 this work. 



The present specimen was the gift of my good friend 

 P. Rashleigh, Esq., often mentioned in this work, and 

 is of the more consequence as it is in some parts crystal- 

 lized, so as to allow me to describe the form of its crystals, 

 and in which state it is rarely seen. 



The primitive crystal is a cube which may be fractured 

 parallel to one of its faces, commonly with great ease, and 

 parallel to another with some difficulty; but in the direc- 

 tion of the third with much irregularity. The crystals on 

 the upper specimen are so small that they cannot be under- 

 stood without the help of a lens. It is accordingly repre- 



