59 



TAB. CCCXXXIV. 



Schiller Stone^ 



Syn. Schiller Spath. Emmerl. 3. 340. 



Spath chatoyant des Allemands. Haiiy, 4. 39.5. 

 Schiller Stone. Jameson, 1. 428. 



Already mentioned at tab. 221. This substance is not 

 much known, and although tolerably easily detected when 

 in Serpentine, is not otherwise much unlike some sorts of 

 Hornblende; it is, however, much softer, and is rather easily 

 scratched with a knife, giving a white streak somewhat 

 metallic in lustre, and having a plated appearance. Ta 

 the British specimens, either from Cornwall or Scotland, 

 the plated structure is more or less readily seen in numerous 

 brilliant specks, from the tenth of an inch to upwards of 

 half an inch in size : the larger plates have frequently a 

 broken or ragged appearance, with holes in them penetrated 

 by the duller Serpentine, or its flat surface forming round 

 about the rugged earth, which often accompanies the dark 

 brick-coloured Serpentine. 



The plates seem very thin, and accumulated upon each 

 other ; and this is partly seen in some rhombic sides, re- 

 sembling some slaty structures : on the other sides it is 

 not at all discernible. The substance on the whole is of a 

 dull blueish green, or middle greenish grey — see my Elu- 

 cidation of Colours, tab. 5 and 6, No. 47*. The plated 



* It is usually called Olive green ; but olives differ very much. I feel con- 

 fident that a table for colours and reference will be most exact. 



