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346 Canadian Record of Science. 
the pegmatitic portion, filling in angles between other . 
minerals and proving that quartz was on the whole latest 
in crystallizing. 
As a result of the visit to the Clear Lake region it is 
found that the band of eruptive rock represented on Dr. 
Bell’s map as extending from the middle of Morgan Town- 
ship to the northeast corner of Lumsden, and extended in 
the map published by the Ontario Bureau of Mines in 1892 
nearly to the western boundary of the District of Nipissing, 
should be still extended four miles eastward so as to pass 
between Clear Lake and Marion Lake which lies to the 
south. 
NOTES FROM THE CHEMICAL LABORATORY, QUEEN’S 
UNIVERSITY. 
Communicated by Pror. W. L. Goopwin. 
It, 
A Hicuty Nickenirerous Pyrire. 
There is at the Murray Mine, Sudbury, Ontario, a deposit 
of nickel ore consisting of rounded nodules in a horn- 
blendic matrix. It is found near the surface, and is quar- 
ried out along with pyrrhotite, chalcopyrite and galena. 
In the same deposit is found a pyrite containing no nickel 
or cobalt; and in an underground working magnetite is 
found. This also contains neither nickel nor cobalt. The born- 
blendic gangue is much decomposed at the surface, so that 
large lumps of the rock fall to pieces with a light blow of the 
hammer, revealing the nickel ore as grey nodules, re- 
sembling in colour and lustre arsenopyrite. It is, however, 
free from arsenic. Its hardness was found to be 65. It 
was found difficult to separate the pyrite completely from 
gangue; but an analysis was made of as pure a sample as 
could be obtained, with the following results: 
ik IE 
One sccisdced eerece eee BUAD P. GC. ssereve 
Nickel (and Cobalt?) 482 “ ....... 
OMI OUVTUR: Grebe Aaqetidoae AA? GLA ey 
Insolablevre. vee. 9:92 “« 9°90 
96°45 
