OCCURRENCE OF PRECIOUS STONES IN N.S.W. 239 
I must say that I have seen the true emerald in one district in 
New South Wales only, viz., in the county to the north and north- 
east of Emmaville. Emeralds have been recognised in that locality 
in the tin-bearing drifts for some twenty years past; but it was 
only in the year 1890 that these drifted emeralds were found in 
situ. In that year systematic mining for emeralds was begun, 
about seven miles to the north-east of the township of Emmaville, - 
by the Emerald Proprietary Company. Attention was first 
drawn to this locality by Mr. H. M. Porter of Hillgrove. At 
the present time the Proprietary Company have some shafts 
down on the property to a depth of one hundred and fifteen feet, 
at that depth stones of a good colour and quality have been found, 
but from a variety of circumstances no active work is now being 
carried on at the mine. It would be a mistake however to con- 
clude that the emerald is confined to this one point of the locality 
named. TI have seen emeralds of a good quality a mile-and-a-half 
to the north of the Proprietary Company’s ground, and I have 
also seen a good emerald in a granitic matrix, discovered in 
detritus from a granite cliff, on a creek about two miles nearer 
to Emmaville. 
Occurrence of Emerald. 
At the Emerald Proprietary Company’s mine the emerald was 
found on the surface with disintegrated felspathic material, slate- 
rock, and quartz, not very far from the junction of clay-slate and 
granite. On opening the ground it was seen that a reef or vein 
of siliceous materials occurred in slate-rock or clay-stone. The 
reef travels or trends in a north-eastern direction, dipping at a 
high angle to the south-east. At various points, proved toa 
depth of a hundred feet, shoots or pockets occur containing 
_Qartz, topaz, tin-stone, arsenical pyrites, fluorspar, and kaolin. 
These shoots almost always carry emerald or beryl associated 
with the minerals named. Again some shoots consist for the 
most part of emerald and beryl only. Glancing over a collection 
of emeralds from this mine, I noted the following occurrences :— 
