121

there are indications of the existence of two other larger veins, one of
which at one point is at least 3 feet thick. Thus, ina thickness of some 20
feet, there appear to be four major veins, the uppermost of which is con-
tinuous the whole length of the trench, whereas the others possibly in some
part of that distance die out or break up into groups of thin, diverging
veins. The thickness and lateral extent of the three lower major veins
is conjectural only, since they are but poorly exposed. At the east end of
the trench, all the veins are terminated by a fault (See Figure 22).

A few feet to the east and a little north of the first trench, a second
trench extends for about 20 feet to the east. In it much magnetite is
visible, with the same general relations exhibited in the first trench, except
that the dip of the veins is steeper. At the east end of this pit the
following section is displayed:

Inches

ING esc apo cnaomoen coUadonseaen ed duld due nent On naaaboscotananocuG arama are
Magnetite..........-. 19
IR ei vaganaseedsess 6
Magnetite........... 23
IN@Okcogunsy doors Cons ResoaeaodRADDS 334
Magnetite.............. 45
IRCA cc den peaonee basen co 19
Magnetite............- 8
IDinlitia aso ude de sneha on cs Ebumars heen penne tance copEnbesEpomoecuboonG

In a distance of 12 feet westward along the floor of the trench, the
19-inch and 45-inch veins of the above section increase in thickness and
coalesce to form a solid mass of magnetite at least 8 feet thick with only
one wall exposed. At the west end of the trench, 8 feet away, this body
of magnetite has decreased to a thickness of 3 feet.

A third pit about 30 feet long extends eastward from just beyond the
east end of the second pit. The third pit has largely caved in, so that any
ore present is now largely obscured, but the general impression obtained
was that the amount of ore present decreased eastwardly and that on
the whole the pit was sunk in rock traversed by thin seams of magnetite
occurring in a zone about 12 feet wide.

About 20 feet.south of the third trench is a fourth trench, 40 feet
long but narrow and shallow. A fifth trench lies to the west of, and slightly
south of, the last mentioned. Magnetite occurs in both trenches. At
the western end of the fourth trench a mass of ore, 5 feet thick, appears,
but is abruptly ended towards the west by a fault. In the western part of
the fifth trench, in places no ore is present, whereas approaching the east
end, in a width of 10 feet, two veins of magnetite are visible, each 3 feet
thick, but one of these splits into several thin veins.

It is possible that the veins visible in these different trenches all
belong to one zone broken into short segments by faulting. Two such
faults were noted (See Figure 22) and there is presumptive evidence of the
existence of a third passing between the fourth and fifth trenches.

Four hundred feet west of the trenches is a small exposure of rock
impregnated and seamed with magnetite. One hundred feet north of this,
an inclined shaft or pit has been sunk to a depth of 30 feet. This exca-
vation has been made along the hanging-wall side of a magnetite vein
at least 14 feet thick, striking slightly north of east and dipping south at
an angle of 55 degrees. The same vein is exposed at a point 70 feet to
the east. Two hundred and thirty feet west of the inclined pit an isolated
exposure of magnetite, measuring about 2 square feet, is visible. Seven