',10 
Records of the Geological Survey of Indio. 
[vol. in. 
Tlie root and floor of tliu deposit are not confined to any particular kind of rock of the 
metamorphic series; many different rocks occur as such,—clay-slate, chlorite-, talc- and 
mica-schist; but always a schist; quartz rock never occurs as roof and floor. The strike is the 
same as that of the rocks ; in the west, from east-west to east-35°-south; in the east so 
much as east-60 0 -sonlh._ The dip is 15° to 50°-to northward, mostly 2»l° to 36°. The normal 
width ol the lode is 20 to 22 inches, at which the ore is richest; sometimes filling the whole 
vein. It often expands to three feet and over; but then the ore scatters and the richness 
suffers. W hether a workable ore extends, and how deep, is unknown; the ancients only 
worked that nearest the surface; hut wherever I opened old works and went deeper good 
ore was touml, generally after cutting through some poor ground, so that, at 100 to 120 feet 
the ore still always hold out. At the time of my departure the point at which research had 
been carried farthest was at Landu; there 212 feet had been reached, but already at 190 feet 
the ore had. decreased, and at last was quite lost. Whether there only happened to be poor 
ground at this spot, or whether generally the ore does not extend to the deep, is unascertained: 
I would almost decide for the latter opinion. The deposit is of course not worth working 
throughout its entire extent; hut rich parts alternate with poor or even with barren; to find 
the first was therefore the chief endeavour: and we were successful at many points in finding 
such rich localities. 
In the Lopso and Siren section the ore is associated with quartz- and mica-schist. 
At Podumpur with a sandy mica-schist containing schorl. 
At Akarsuni with black mica-schist and quartzose clay-slate, close to greenstone; granite 
also shows in the neighbourhood. The detritus on this granite is washed for gold. 
At Tamba-dungri, a greenstone that does not reach the surface seems to have raised 
tlie schists and partly metamorphosed them locally into gneiss and quasi-granite, and the 
ferruginous schist into jasper. The top of the hill is burrowed all over with little pits 60 
feet deep. 
Tlie northern run at Landu is in quartzose schist accompanied by mica-and chlorite- 
schist: the southern in mica- and chlorite-schist with associated quartz. 
At Chundra the ore occurs with quartz gangue in mica- and chlorite-schist and quartzose 
clay-slate. 
At Matku in the quartzose clay-slate and quartz-schist. 
The northern lode at Chura-dutigri and Hifku is in quartz-schist; at Pahlu-dungri in 
chlorite-schist; at Banka it is greatly disturbed and seems to be cut out suddenly by 7 a mass 
of potstone. 
At Raoia and Bagh-ghura the rock is sandy schist and quartzite, hut mica-, chlorite- 
and talc-schist are not absent. It was here that disthene-rock was found. The ore is in a 
silieious schist and occasionally in mica- (black mica), actinolite- and chlorite-schist. 
At Sukurna, near Sideshor, the ore is in silicious schist, associated with mica-, chlorite- 
and quartz-schist. Sideshor appears to he the production ol’ a penetrating north-south upheaval; 
and in its quartzites traces of the ore arc found, as malachite,—a proof that many beds of 
the metamorphic series are cupriferous. At Bindrabun immediately under the ore is a 
massive rock composed of quartz and tourmaline with a little mica,—a granite formation, 
except that felspar is wanting; one might almost call it greisen. A run of jasper occurs 
close by, in the formation of which, as well as in the elevating of Sideshor, this peculiar 
rock may have taken part. Malachite traces are found in it too. 
At Path nr dungri the rook is quartz-schist; hut on the south-west of the hill ore occurs 
in mica-, chlorite-and hornblende-schist. 
At Surd# the ore is in dark mica-schist containing garnet, chlorotoid, and hornblende 
crystals. Near Pathurgliora the ore is in more or less metamorphic schist; near the village 
red felspar is associated, and the rock becomes granitoid. 
The distribution of the ore in the lode follows no certain order; unless one is to con¬ 
sider as such its constant association with quartz, which is always the preponderating gangue. 
Prom the agreement of the dip and strike of the deposit with that of rocks, one would con¬ 
sider it as a stratified ore, were there not much against such a supposition. I do not hero 
allude to the cuirasses and quartz druses, hut especially to the variable strength of the 
deposit itself, and the interruption and separations of the outcrops; which then again follow 
