94 
Records of the Geological Survey of India. 
[VOL. VI. 
Mr. Waldie, who analysed it, describes it as a new mineral species under the name O’Bileyite, 
in the Proceedings of the Asiatic Society of Bengal for 1870, page 279. Two analyses of the 
samples were made as below, the first being that of 
a sample forwarded on the 24th July, 
the second, which differs slightly, a sample forwarded subsequently:— 
Copper 
... 17-000 
Silver 
... 0*096 
Iron 
... 36-470 
Antimony 
... 1-150 
Arsenic 
... 32700 
Sulphur 
... 1-360 
Earthy matter... 
... 0-560 
Deficiency and loss 
... 10-664 
100*00 
The silver in the above sample is equal to 31f r ounces troy per ton. The large amount 
of loss, however, (presumed to he mainly arsenic) was unsatisfactory, and Mr. Waldie, there¬ 
fore, made a careful analysis of a second sample of the same mineral, forwarded by 
M. O’Biley on the 10th of October, with the following results 
Specific gravity: In small pieces 7'343 : 
In powder 7‘428. 
Copper ... ... 
... 12-13 
Iron 
... 42-12 
Arsenic 
... 3845 
Antimony 
... 0-54 
Earthy matter ... 
... 0-12 
Oxide of copper... 
... Mil 
„ lead ... 
• •• ••• 1‘89 [soluble ini dilute 
... 1-12 [; hydrochloric acid. 
Araenious acid ... 
Protoxide iron ... 
... 1-97.J 
Loss 
... 0-45 
100-00 
Indications of the presence of copper, in the shape of stains of the green carbonate, are 
also occasionally met with; one such being recorded in the Geological Notes by Captain 
W. Foley, in the Botoung hills, 90 miles north-north-east from Moulmein (Maulamgeng); 
his words are : “ Silver ore is said to exist in a limestone rock at this place; and judging from 
the numerous excavations that had been made by those in pursuit of the precious metal, no 
little labour has been used in the endeavour to discover it. I had neither time nor opportunity 
for ascertaining whether silver ore does so exist. 
Pieces of copper green, iron pyrites, and 
lead ore deemed useless and cast aside by those in pursuit of silver were strewed about the 
place, and for the first time, in this part of the 
thin seams through the limestone rock.” 
world, I observed anthracite dispersed in 
From this interesting passage, I should infer that extensive diggings for galena had 
been made here, as in a note the rejected lead ore is said to he the “ arseniate," possibly iden¬ 
tical with phosphate of lead containing arsenic, which has recently been received in the 
laboratory of the Geological Survey for analysis from the Martaban district. 
Antimony.— Antimony occurs associated with galena in Martaban, but is nowhere 
worked in British territory. Metallic antimony, however, is imported to a small extent from 
the Shan States, and is probably used as an ingredient in the alloys of copper and silver 
which are worked up for ornaments by the Shaus, who excel in all sorts of metal work. Anti¬ 
mony docs not seem to receive much attention as a metal, though the powdered sulphide is 
largely used throughout the East as a collyrium under the name of soorma/t, the application 
of which along the eyelid, in the shape of a fine black powder, is supposed to enlarge the 
