Miles and 
kilometres. 
23 
anorthosite, there are probably two kinds of 
iron ore associated with one another, one rich 
in titanium and one poor in, or free from, that 
element. A portion of it is titanic iron ore, for 
leucoxene often appears as a decomposition 
product. The calcite is always present as a 
Anorthosite from New Glasgow, P.Q. pigronbovorrapy between crossed nicols. 
X< 28 diam. 
decomposition product and the quartz, which is 
found in very small amount, is associated with 
the bisilicates, and may also be secondary. 
The rock in its present form probably repre- 
sents an advanced stage of granulation, for 
although twisted grains and _ strain-shadows 
