44

Prare VII.

A. Microphotograph of polished ore from the Brian
Boru property, magnified 395 diameters. Chalco-
pyrite veining zine blende. 1, zine blende; 2, chaleo-
pyrite; 8, pyrrhotite; 4, gangue. Paragenesis—4,

(Page 20.)

So.

2.

B. Microphotograph of polished ore from the
Hazelton View mine, magnified 395 diameters. Show-
ing the fineness and distribution of the gold. 1,
arsenopyrite; 2, safflorite; 3, gold; 4, molybdenite;
5, gangue (quartz, actinolite, etc.). (Page 23.)