cxviii Report of the Mineralogical Survey [No. 126*. 



cleavage, and so strong a pearly lustre, as to be at first mistaken for 

 dolomite spar, (macrotypous lime haloide,) but its specific gravity 

 and ready effervescence with acids, shew it to be rhombohedral lime 

 haloide : veins of a resinous quartz ; bluish, black and white, are also 

 observable. 



257. In descending to the Surjoo, a little blue limestone is seen, and 

 one patch very beautifully variegated with yellow veins of carbonate of 

 lime. The prevailing rock, however, is argillaceous schist ; a good deal of 

 what might, in following up the distinction, (Art. 246), be called clay 

 slate also prevails, soft and distinguished by its series of colours as well 

 as by its patches of a different colour from that of the ground. At the 

 bridge, the rock dips S. W. In ascending from the river, an impure 

 hornblende rock begins to appear, remarkable for its numerous cleavage 

 places, which render it so difficult to distinguish the lines of the strata. 

 Hornblende and actynolite schist are found, and a white massy rock, 

 which from a cursory examination, I supposed to be a compound of 

 tremolite and quartz, as the three substances, hornblende, actynolite 

 and tremolite really constitute but one species, (hemi-prismatic augite 

 spar,) there is nothing improbable in this opinion. I have to regret in 

 this, as in many other instances, the want of access to the specimens col- 

 lected, in drawing up this paper, which prevents me from revising parti- 

 culars of this description, stated hypothetically in my note book. 



258. The hornblende schist ceases a little above the village of Neoola- 

 goon, and is succeeded by gneiss, which is of a porphyritic type, contain- 

 ing superadded prismatic nodules of felspar. This mineral in every case 

 appears to be of greater durability than the basis or ground, and the nodules 

 consequently remain projecting after the other has in a measure disinte- 

 grated, giving the rock an exceedingly uneven and rugged surface. The 

 dip was observed to be S. W. Near Jagesur, this gneiss is succeeded by 

 micaceous schist, dipping to S. S. W., with an inclination of 60° above 

 Jagesur. On the Pass the dip had changed S. W. This rock continues 

 to Almorah, and presents nothing very worthy of remark along this line. 

 Near Chandeswur, it dips to S. S. E., with an inclination of about 15°. 

 A few miles from this, it contains beds of brown iron ore, (prismatic 

 iron ore,) which are said to furnish a very good metal. The ore con- 

 tains a little manganese, rolled pieces composed of grains of quartz sand, 

 and octohedral crystals of magnetic iron ore (octohedral iron ore,) are 



