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DESCRIPTION OF THE ORE OCCURRENCES

At several places on the jutting point southeast of Stuart anchorage,
magnetite occurs in small quantity impregnating parts of bands of
micaceous schist, but only in one place does any important amount appear
at the surface. At this place a band of mica schist possibly 150 to 250
feet broad forms a narrow ridge which strikes southeast at right angles
to the shore and rises along its axis to a height of 100 fect in a distance
of 200 feet from the sea. The ridge is largely covered with drift, but rock
is exposed at its base at its shore end and over an area a few feet wide
and 150 feet long extending from the shore along the northeast side of
and close to the axis of the ridge. Several shallow trenches extend from
the long rock exposure across the axis of the ridge and two other trenches,
respectively 60 and 135 feet distant from the southeast end of the long
rock outcrop, cross the strike of the strata. Farther southeast along the
ridge a few rock exposures are present.

The magnetite outcrops in several masses at the water edge at the
northwest end of the ridge, and is exposed in a band not averaging more
than 4 feet in width and which for a length of 200 feet is visible in the
long exposure on the northeast face of the hill. Sixty feet southeast of
the end of this band of ore and along its strike, no magnetite is visible
in a crosscutting trench. Seventy-five feet farther southeast, a second
trench shows schist impregnated with magnetite over a width of several
feet.

In the case of the several smaller masses of magnetite at the seaward
end of the ridge and the long, band-like area, on the northeast slope,
although one boundary may be sharply defined, the other usually is not so
and for a space of one or more feet the bordering schist is rich in magnetite,
or bands of schist and magnetite-rich schist may alternate. The several
small bodies at the shore end of the ridge range in length from 15 to 30
feet, and in each case end to the southeast rather abruptly and, possibly,
against a fault-plane, though no direct evidence of the existence of a fault
was noted. The purer magnetite is compact, fine-grained, with some
admixed biotite and other mineral constituents of the schists.

MODE OF ORIGIN

The occurrence of the magnetite in bed-like masses associated with
schists of, presumably, sedimentary origin, may suggest that the magnetite
also is of sedimentary origin. The sporadic appearance of magnetite
elsewhere in the general vicinity and the numerous examples along the Pacific
coast of magnetite bodies associated in origin with plutonic rocks, gives
rise to the presumption that the magnetite occurrences on the Royal
claim also are secondary, and are of the nature of replacement bodies
formed along lines of weakness in the more schistose members of the
sedimentary series.

ECONOMIC CONSIDERATIONS

The band-like body of magnetite outcropping on the northeast. side
of the ridge is exposed over a length of 200 feet. At its northwest end it
passes below sea-level. At the southeast end it disappears beneath drift.
Sixty feet beyond the southeast end, a cross-trench fails to reveal ore;
either the band ends in this distance or it has been displaced by a fault.