290 MIDDLEMISS : GEOLOGY OF HAZARA AND BLACK MOUNTAIN. 



I have not been able to mark the coal band on the geological map with this 

 memoir, because the scale of the map is too small, nor do I think it worth while, 

 considering its variable quality and quantity, that any further details as to its 

 position need be given here. In my previous report I have indicated its position 

 in the Dore R. sufficiently well for practically testing its worth by some simple 

 mining operations such as recommended by Mr. Morris. Until these are done, 

 and a sufficient quantity of the stuff extracted to prove its worth or worthlessness 

 as fuel from a practical point of view, it would be hardly advisable burdening 

 this memoir with a special map showing its known distribution and probable course 

 along the line of country to which it is confined. 



All such information can be supplied at any time in the event of it proving 

 of any real use as fuel. 



Index to Plates of Microscope sections. 



Fig. I. Gneissose-granite from Shal. n. between Kand and Seri, Black Mountain. 



Specimen No. ^fy. Natural light, l inch objective. Drawn with camera 



lucida through a Dick's petrological microscope, as are all the sections which 



follow. a=» orthoclase crystal shattered and deformed, b — quartz layers. 



£= garnet. 

 Fig. 2. Same as Fig. I. Seen between crossed nicols. The polarized light brings out 



very plainly the ' cataclastic ' structure in the quartz-felspar layers. 

 Fig. 3. Plagioclase-augite dyke (dolerite), f- mile north east of Mansehruh. Specimen 



No. 5~§6. Natural light. 1 inch objective. a=» plagioclase, b = augite, c=» 



titaniferous iron-ore. d=> green alteration product. 

 Fig. 4. Epidiorite, near Mansehruh. Specimen No. -g-fy. Natural light, 1 inch objective. 



a= plagioclase, b = augite, c= titaniferous iron-ore, d— green alteration 



product. 



Fig. 5. Epidiorite, dyke right bank of Indus river, opposite Ghazikot, Black Mountainy 

 Specimen No. ^. Natural light, 1 inch objective. a= rolled out plagioclase 

 layers, b<= eye of augite considerably altered, c= rolled out lenticles of 

 titaniferous iron-ore, rf=» alternation product. 



Fig. 6. Hornblende-schist, same locality as Fig. 5. Specimen No. gt^ Polarizer only 

 i inch objective. 0= Quartz and secondary felspar? layer, b= hornblende, 

 6'«=> Tremolite ?, c=» sphene. 



Fig. 7. Hornblende-garnet rock, river boulder in Indus river bed. Specimen No. ff. 

 Polarizer only, 1 inch objective. a= Hornblende, 6= garnet, c<= titani- 

 ferous iron rock, d= rutile. 



Fig. 8. Ultra-basic rock, River-boulder in Indus river bed. Specimen No. g-fa. «« 

 augite, b<= olivine, c«= hypersthene ? 



( 290 ) 



