86 B, Silliman on Wollongongite. 
The remarkable substance which is the subject of this note 
has been observed only in one place, about 250 feet above tide, 
and five miles inland at a point about 40 miles south of 
Sidney. Its mineralogical characters are as follows: 
In cubical blocks without lamination. Breaks in broad con- 
choidal surfaces, extremely tough a resounding like hard 
wood under the blows of the hamm 
04— 
H.=2 to 2'5. =I- 1-49, re resinous, somewhat 
silky. Color greenish Leste and brownish black. Streak light 
brown to er eee o odor when ra ote ae cae Sect- 
of a yellow cblor and wie odor, much gas. 
insolible? in alcohol, ether, or penzole, but is slightly dissolved 
in onic disulphid to which it imparts a slighty yellowish 
nit is readily kindled in thin splints by a match, burning with 
a brilliant flame and muchsmoke. The analysis i ina platinum ~ 
crucible yields the following results. 
Volatile matter, - - - - - 82°5 
Fixed carbon, - - - - - - 6°5 
Mh Gee ae A ek eS 
100°0 
From these characters this substance obviously resembles suc- 
cinite and is probably as well entitled to a place in the system 
as bathillite or torbanite. An ultimate uot analysis of the 
mineral is required before its true composition can be ascer- 
tained. It may provisionally be called Wollongongite. 
The dellowing technical results were obtained by us at the 
in New York gas laboratory of the Manhattan Gas Light Co., 
sie York, made with a view to determine the achive! value 
mineral as an enriching material in gas making.* 
* Mr. Young, of Glasgow, well known for his researches upon coal oils, of 
which in fay he is a well known anaes obtained the {alivwing results on 
tne cam ce cannel, by oan for 
yields per ton of ernde oil, Sp. Gr. 0°860==152 gallons, divided as 
ss " Mineral turpentine” ght asphths,) - Sp. Gr.=0-739=8 galls. 
Burning oil, - : “ O-816—72° ** 
Lubricating oil, es : ss POUGES 
Paraffin, 49 pounds, - oe ¥ a" 
Loss, ash, 2G ee Se 32. 
pba eS a a ial Iara oc whe cM 
Gas found by Mr. Young, x a a 16,000 cubic feet per ton. 
Private communication by Mr. Hall. 
