PHYSIOGRAPHY. 



Anatase. 



15 



tia.) and Monte Somma where from its being of a flesh-red color it has 

 received the name of Sarcolite. It is met with in the iron-stone beds of 

 Arendal in Norway, and in the silver veins of Andreasberg in the Hartz. 



ANATASE. Pyramidal Titanium-Ore. MOHS. 



Primary form. Octahedron with a square base. P on 

 P (over the base) =136 47'. 



Secondary forms. 

 Fig. 8. 



Fig. 9. 



P on o 



r on o 

 r on s 

 P on 5 



- 111 17' 



152 -27 

 166 30 

 132 5 



Cleavage parallel to the primary faces and to b, both 

 perfect. 



Fracture conchdidal, scarcely observable. 



Surface smooth and shining. 



Lustre metallic adamantine. Color various shades of 

 brown, more or less dark, also indigo-blue. Streak white. 

 Semi-transparent . . . translucent. 



Hardness^ 5-5 ... 6-0. Sp. gr. = 3-826. 



