BOLE. 179 



Massive : composition impalpable. Fracture rather 

 thin and straight, slaty. 



Faintly glimmering. Colour brownish- black and 

 blackish-brown. Streak shining, with a resinous 

 lustre. Opake. 



Rather sectile, feels very little greasy. Interme- 

 diate between soft and very soft. Sp. Gr. = 

 1-995, KIRWAN. 



According to WERNER, it is slate-clay with a small por- 

 tion of bitumen. It occurs at "Wehrau in Lusatia, also in 

 the neighbourhood of Elbogen in Bohemia, in the Tyrol, 

 in great quantities in Thuringia, and in many other coun- 

 tries, with different varieties of clay, and with coal. 



BOLE. 



Bole. JAM. Syst. Vol. II. p. 86. Man. p. 314. Bole. 

 PHILL. p. 53. 



Massive : composition impalpable. Fracture per- 

 fectly conchoidal, sometimes rather flat. 



Faintly glimmering ... dull. Colour brown, yellow, 

 and red. Streak shining, resinous. Feebly 

 translucent on the edges ... opake. 



Rather sectile. Adheres to the tongue, feels greasy, 

 and is very soft, sometimes approaching to soft. 

 Sp. Gr. = 1-600, KLAPROTH ; = 1 977, BREIT- 



HAUPT. 



If thrown into water, it emits a crackling noise and falls 

 into powder. It occurs in irregular beds or disseminated 

 masses in wacke, trapp-tuff, &c., and is found at Striegau in 

 Silesia, at Scheibenberg in Saxony, the Habichtswald in 

 Hessia, in Thuringia, Tuscany, &c. 



