190 



Outlines of the Mineralogy and Geology 



Geological Situation and Localities. 



It occurs in small veins in Greywacke and in Amygdaloid, at 

 Brighton ; and in Greenstone, at Cliarlestown ; also massive and 

 disseminated in rolled masses of ^uartZ; at Brighton and New- 



4 



ton : and in Quartz^ at Blue Hill. 



y 



SPECIES iy,—OCHREV BEOWJV OXIDE OF IROJW 



(khrey brown oxide of Iron, Cleaveland^ p. 494. Ochrey brown Iron Stone> 

 Jameson^ vol, ii. p, £98. Brown Iron Ochre, KirwaUy vol. ii. p, 167. Ochrej 

 brown Iron Ore, Jikm, p. 118. Yellow Ochrej Artists. 



External Characters. 



Its colour is light brownish orange. 

 It is dull. 



It is opaque. 



It is amor^)hous. 



It exhales an earthy smell when breathed upon. 



It has an earthy taste. 

 It adheres to the tongue. 

 Its soil is brownish orai 



* 



It is friable. 

 It is very soft. 



The fracture is earthy. 



e 



Chymical Characters, 

 Before the blowpipe its colour changes to a deep reddish 



ge, and it then fuses into a blackish 



rey 



% 



