Ellsworth American. [volume] (Ellsworth, Me.) 1855-current, 1880-04-29

fractures Of sedimentary terranes. The swan
lode traverses a true hssure in the tilted
strata of meiamorphic sedimentary bed,
and there can be no doub, about its relia-
bility
To be more explicit about the geological
position of the Swan Mine. i, may be as well
to state ,ha; it rests perfectly eoniormable
with the stra,ihed lamination Of a vast
Archaan sedimentary deposit. known TO ge-
ologis,s a. the Huronian. |, has been esti-
mated that the vertical depth Of Huronian
strata is from ten thousand to twenty thous
and feet; and as the cleavage fractures of
the up,urned strata. extend through the en-
tire deposit, some idea NAV reformed of the
probable depth of the Swan vein matter.
In this connection. | desire to state as
briefly as possible. the accepted theory in
relation to the trend. or strike. Of rock lam
nations 1t is now generally admitted by
geologis,s. that the rock fractures, or deep
surface assures Of the globe. have been oc-
easioned by some general law Of terrestrial
crystalliEaton. In other words, that the en-
tire surface Of the planet is crystalline, and
that the rocks manifest a tendency to split
in certain directions. like the cleavage lines
IN ordinary rock crystals.
As ProfcssorJ J. ID. Dana stated il, Two
great systems Of courses or trends prevail
over the world. a Northwestern. and north
eastern. transverse 20 one another; that the
islands of the oceans, the outlines and re-
liefs Of the continents, and the oceanic
basins themselves. alike exemplify these
systems that the mean average directions
Of the two sysicms of trends arc northwest
by-~est, ana northeast BY north; that there
are vide variations from these courses, bu,
according TO principle, and that these varia-
,ions are often along our,ing lines that.
whatever the variations, when the lines Of
the two systems meet, they NEE; nearly a,
rgh; angles. or transycrselv 10 one another
In North America, the north
west system Is seen in the general course o.
the Rocky Mountains. the Cascade Range,
aud the Sierra Nevada; in Florida; in the
hne Of lakes. from Lake Superior 10 the
mouth Of the Mackenzie; in the southwest
coast Of Hudson's Bay; in the shores Of
DAVIS Straits and Baffins Bay and With no
greater disergenocs from a common course
than occur in the Pacific. The nor;h-cls;
system il excmpliied IN the Atlantic coast,
. 4 -
farther to the northeast, along the coas, OF
Greenland"
The great zone in which the Swan Mine
is situated. belongs to the grand north-eas,
s,siem OF continental trends. and. as il has
no, been pcrccpiibly detected or faul,ed by
disturbing forces. i; evidently occupic, rs
original crystalline position aud J. therefore
in pcFfcc; harmony with the accepted ,heor,
OF continental rock structure.
That the Swan, a; it. present superficial
depth. contains some refractory base ee
ments. such the sulphufets Of iron and
lead, j. certainly true; but the practical
working of just such mines in other portion.
Of the world has long since proved ,ha,
when such base elements appear at tn. out
crop Of well defined silver bearing lode,
they rapidly fade out as depth increases
from the surface, and finally give place to
the more precious metal.
The present developments upon the Swan
lode are merely superficial. and therefore
afford limited knouledg. of the real con-
di,ions Of the mine | am fully satisfied
that when suitable mining appliances shall
b. placed upon the property, the Swan will
speedily assume the character OF perna-
nent and valuable silver mine The Swan
Mining Company hold. perfect title to all
minerals which may exist upon territory
one hundred and eighty rods east and vest
by one hundred and twenty -eigh, north and
south. or one hundred aud forty four acres
of land upon which their mine is located
together with all the rights and privileges
necessary to develop the same.
The vein whereon the shaft is now being
sunk, lies about fifty rods ives, Of the eas,
line OF the property.
The mining ~olks are easy Of access by
well constructed wagon road, and are also
within three e-fourths OF u mile from the shore
Of Frenchmans Bay. The trac, of land re-
ferred TO, is covered by fine fores, Of living
trees, which will furnish all the timber and
lumber required by the owners for mining
purposes. In brief, the Swan Mine is in
every respect promising prospec, for
first-rate silver mine.
Yours very sincerely,
" L Srru,nr