PENROSE.] 
APATITES OF CANADA. 
33 
eral cases were found where the apatite and associated minerals came 
into direct and sharp contact with the country rock (see Figs. 7 and 20). 
Thus, on the land of the Sly brothers, in Oso, Frontenac County, Ontario, 
there is a vein two feet wide in a gneissio rock. The boundary lines of 
the vein are sharply defined and white, red, and transparent calcite is 
associated with grass-green hornblende and brown apatite, in a mass 
apparently devoid of any banded structure (see Fig. 7). (The vein dips 
at an angle of 85° N. and strikes E. and W. The country rock strikes N. 
20° E. and dips 40° to 45° ESE. A somewhat similar instance is seen 
in the same township at Boyd Smith's mine. Here were three veins 
apparently occupying joint planes, and parallel to one another (see Fig. 
10). The veins are composed principally of apatite and hornblende, 
and their general character is very similar to that of the last vein de- 
scribed. They strike K 15° W. and dip at 10o NE. The strike of the 
country gneiss is ET. 35° E., dip 60° SE., so that it is evident that 
the deposits cannot be beds. They can be traced for 50 yards along 
the side of the hill. 
Fig. 15. Southwest side of a pit at North Star mine, Portland East, Ottawa County, Quebec, Canada. 
A, apatite; B, pyroxene. Scale: 1 inch = 10 fee... 
Some of the veins of apatite show a distinctly banded structure. 
On the land of James Foxton, in Frontenac County, township of Longh- 
boro', there is a series of gash-veins running in a general northwest and 
southeast direction. They are of ail sizes, from small ones not two inches 
thick to large ones three to six feet wide. The general character of all of 
them is the same. They occur in the country gneiss and occupy an al« 
Bull. 4G— 3 (507) 
