U S. GEOLOGICAL SURVEY
RETORT ON HYDEX DISTRICT
Reprinted from U. S. Geological Survey Bulletin No.
77$—B, “mineral investigatio ns in southeastern Alaska,'’ J
926: BY A F. Buddington.
RIVERSIDE
The Riverside group of claims
Is on the east aide of the Sal
mon Rivpr road a little beyond
Seven Mile, ‘at an altitude of
about 260 feet. The property
conaiate of ten claims under
development by Strong, Barb
er A Black. The developments
consist of aboiit 2,400 feet of
Underground workings ana
numerous trenches end strip
pings ai the surface, made
since September, 1922. Three
quartz fissure veins in grano
orite are being prospected,
kno^jvn as .the Ickis vein, Cross
veip, and Southeast vein or
“main lead."
The Ickis vein has been pros
pected <by three tunnels, the
lowest One about 15 feet long,
the middle one about 20 feet
long and 35 feet higher (now
covered by the dump from the
upper tunnel)', and the upper
onal abput 70 feet above the
low/eat rtunnel and 500 feet
long. In the upper tunnel the
vein is about 20 inches wide
at the face and is reported to
be 4 or 5 feet wide in front
of the entrance, now covered
by the dump. The tunnel
was driven on the vein, which
narrows to a stringer a fract
ion of an inch wide at about
200 feet from the entrance
and does not thicken again
within the length of the tun*
nel. The vein within the tun
nel averages about 8 or 10
inches in width, with local
pinches. The country rock Is
a shattered, slickensided gneis
soid granodioritic rock. The
vein occupies a fissure and
consists of quartz with local
bunches strongly mineralized
with pyrite and galena and
rarely with sphalerite. The
vein has a general northwest
strike, though varying con
siderably, and a steep north
east dip. Assays as high as
$20 to the ton in gold, silver,
and lead are reported. The
vein matter breaks free from
the wall. Stringers (drop
pers) of quartz several feet
long offshoot into the wall
rock.
The Cross vein was cut In
the underground workings
when a cross cut was driven
from the drift on the Ickis
vein with the intention ^ of
reaching the Southeast vein.
It is intersected about 600
feet from the entrance of the
tunnel, and drifts have been
driven on it for about 160
feet tp the south and for
about 60 feet to the north,
to a point where it pinches
out; from this point the tun
nel has been continued north
ward to the extension of the
Southeast vein. The southei
lg 100 feet of the vein ranges
froip 8 inches to 8 feet In
width, but the southernmost
26 feet is sparcely mineral
ized and carries only a little
gold. In the drift north from
the crosscut tunnel the vein
is also narrow but is bettei
mineralized with sulphides.
The 60 feet of the vein im
mediately south of the crosv
cut tunnel ranges from 18
inches to 3 feet in width, is
well mineralized with sul
phides, and carries gold, re
ported to average locally 840
to the ton. At 60 feet in from
the crosscut tunnel a 20-foot
raise and a 40-fopt winze
have been opened on the
vein .The vein maintains a
width of about 2 feet in the
raise but narrows to 6 or 8
inches in the winze. The vein
as thus exposed in the tunnel
is about 210 feet long; the
northerly three-fourths is well
mineralized with sulphides
and carries a good metal con
tent, and the other fourth
MAP OF
PORTLAND CANAL MINING DISTRICT
HYDER, ALASKA
t
U
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has sparce sulphides and a
low metal content, mainly
gold. The southern terminat
ion of the vein is not shown.
About 150 feet of the vein,
as developed in the tunnels,
is considered workable. The
sulphides comprise pyrite gal
ena, and chalcopyrite, with
rare sphalerite. The vein is in
part frozen to the walls (gran
odiorite). It strikes about!
north and dips 30 degres E.
By September, 1924, con
tinued prospecting of this
vein had developed new ore
Bhoots, and it was planned to
install a 60-ton mill using
both tables and flotation to
treat the ore. Three shoots
of ore have been found in j
drifting on the vein at the !
level of the crosscut tunnel,— I
a small one north of the cross
cut tunnel, the one described
above south of the crosscut
tunnel, and a new 70-foot
shoot 150 feet farther south.
About 150 feet of sparcely
metallized quartz intervene*
between the two main shoots.
The southernmost ore shoot
in turn gives way to quartz,
metallized with pyrrhotite anu I
other sulphides but of low
tenor. A winze has been sunk ■
on the vein from the tunnel I
level 140 feet to a lower lev- j
el, where drifts have been
run on th vein for a length;
of 180 feet, and 110 feet to
a still lower level, where
drifting is in progress. Un
the.first level below the tun
nel 50 feet of fine ore has
been exposed which averages
over 3 feet in width, ranging !
from 2 to 5 feet, and is re- j
ported to average $46 a ton !
in value, ranging from $36 to!
$100 pe r ton. The ore aver-j
1 ages about $7 or $8 to the :
ton in gold and 1 ounce of
silver to 1 per cent of lead. I
A sample from the muck pile'
of both the upper and lowei
levels which included some
rock, yielded about 25 pei
cent concentrates. The pyrite
concentrate obtained by sep
aration on tables gave 0.56
ounce of gold and 10.40
ounces of silver to the ton,
4.4 per cent of lead, 37.4 pei
cent of iron, and 0.4 per cent
of insoluble matter. The gal
ena concentrate gave 0.40
ounce of gold and 58 ounces
of'silver to the ton, 74 pei
cent of lead, 4 per cent *of
iron and 1 per cent of insol
uble matter.
The Southeast vein or “main ;
lead” has been developed b>
two adits and a drift over 400
feet long from the crosscut
tunnel. The crosscut inter
sects the vein at about 800
feet from the entrance. Tne
vein here consists of quartz
stringers, locally widening to
several feet, in a highly mash
ed, minutely plicated schist-1
ose granodiorite. A 70-foot •
raise showed similar matei- '
ial. A lens of solid pyrltt j
several inches wide was
found. About 60 feet above
the main tunnel the vein
crops out on the hillside, ana
an adit about 300 feet long,
known as the Lindeborg tun
nel, has been driven on it.
Some inclusions of schistose
granodiorite occur within the
vein. In the Lindeborg tunnei
the vein averages about 3 feet
in width and is reported to
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Rev. C. T. Kattfca, Pastor
average about 914 a ton. The
vein is cut by two dikes ol
dark andesite porphyry, and
the tenor is reported to de
crease near the dikes. The
sulphides are pyrlte and gal
ena, usually localized in
bands, with here and there
a little sphalerite and chalco
pyrite. About 90 feet below
the Lindeborg tunnel is an
I other adit about 150 fee.
long driven on the vein. A.
the portal of the adit is a 2
foot quartz vein which
pinches markedly about 6i
feet in. Stringers of quarts
occur in the adjacent country
rock, and stringers and vein,
of quartz are found along the
remainder of the drift. Then
is here no well-defined per
| sistent mineralized vein, but
sulphides, mainly pyrite anc
galena, are present locally in
considerable quantity. At the
surface numerous trenches
and strippings have exposed
quartz with sulphides for a
length of about 1,800 fee:
up to an altitude of 900 feet
The amount of sulphidos
varies considerably. Layers of
solid galena several inches
thick and carrying consider
able silver are found here
and there. At one cut the
quartz vein is 5 feet wide
and contains 18 inches of
steel galena reported to as
say 27 ounces of silver to the
ton. The present workings
thus show a better-defined
vein with higher metal con
tent m the outcrop and the
upper (Lindeborg) tunnei
than in the lower tunnels, li
the lower tunnels the vein
has more of the nature of a
stringer lead in schist, with
thick bunches of quartz am
small local pockets of sul
phides. Several dikes of and
esite porphyry cut the grano
diorite and the vein. The
vein matter breaks freely
from the walls.
At an altitude of about 550
feet about 40 feet of vein
matter is exposed, consisting
in pail, of solid milky-white
quartz and in part of a brecci
ated granodiorite with quartz
veinings. A grab sample of j
this quartz is reported to
show a little gold, though it
carries practically no sul
phides.
CONTINUED NEXT WEEK
Mrs. Felix Seppi, who has
been quite ill for several days
as a result of an attack of ton
silitis and under the care of
Dr. Standard, has now so far
recovered as to be about.
i
/hrine Pilgrim* Give
Impromptu Entertainment
Continued from Page 1
Mrs. Frank Schopper, Mr. and
Mm. C. Sonnerman, Mis»
Schopper, Mr. and Mrs. Chaa.
Joseph, Mrs. Bremenkamp, A.
B. Hyman,, Miss A. S. Woef
?on, F. Wm. Harte, Walter T.
Fahrenbuck, Mrs. El. Davis,
Mrs. Louis Schneider, Mr. and
Mrs. A. J. Gable, Mr. and Mrs.
3. A. Gast, Mr. and Mrs. Mike
Sohrer, Mr. and Mrs. F. li.
Whipper, A. F. Stark, Miss
ttark, Miss Whipper, Mrs.
Caroline Meyers, Ida K. Dater,
Mr. and Mrs. Fred S. Levy and
<on, Dana Litchfield, A. G.
Dick, Carl Bassler, David In'.
Ulland, Mr. and Mrs. Jerom
Jackson, Mr. and Mrs. Chas.
Jones,, Tillie Hahn. Laura
jraham, Vera E. Gruessei,
Louis Hahn. Harry Schott, Dr.
A. A. Kumler, Sam S. Nichol
son, Mr. and Mrs. John A.
j Griffiths, Wm. H. Tateman,
Jas. M. Fischer, Mr. and Mrs.
Henry Fillmore, Mrs. Theresa
Fox, Geo. M. Manter, Walter
Koertbein, Edith Malm, Louis .
D. Rickel, Mr. and Mrs. O. a
Goetzel, Mrs. Theo Luth, Mrs.
Anna J. Noterman, Dr. Clai
ence Betzner, Louis Seiden
feld, C. P. Ware, Mr. and Mrs.
John Dittgen, Mrs. John C.
! Evans, Miss Dorothy Evans,
Mr. and Mrs. Ed Baumgartner.
Mrs. Jessie Hicks Mrs. Roben.
Hicks, Mr. and Mrs. John A.
Reis, Miss Maas, Mrs. Brack
en, Mrs, Ed. Steinbock, Mrs.
Carrie Reed, Ed Maas, M.
Westlake, Jr. Geo. E. Tebbs,
Frank G. Hamer, Mr. and Mrs.
N. E. Westlake, C. D. How
land, N. Robert Christy, Mr.
and Mrs. John G. Cambria,
jDr. and. Mrs. David E. Weav
er, Mr. and Mrs. Henry Port
man, Miss Weaver, Mr. ana
Mrs. Chas. F. Runck, Jr., Mr.
and Mrs. R. E. Albrecht, Mr.
and Mrs. J. E. Bertsch, Mr.
and Mrs. John E. Weisbrodt,
Norman Schott, Mr. and Mrs.
Wm. Saatkamp. Mr. and Mrs.
James E. Bradford, Mr. and
Mrs. John G. Robinson, Miss
Bradford, Master Bradford,
Mrs. Mougey, Mr. and Mrs.
Doug. Jones, Mr. and Mrs.
Geo. Grau, Mr. and Mrs. Ofctd
Bachman, Mr. and Mrs. John
Warrington, Mr. and Mrs. Al
bert Schirmer, Mr. and Mre.
John Kloh:.
A four team baseball league
has been formed at Ketchikan
! to entertain baseball loi,ors
; during the summer. The
i league includes the Elks.
Eagles, Moose and Signal
' Corps team3.
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