The Anaconda standard. [volume] (Anaconda, Mont.) 1889-1970, 1899-08-22

while the development work, which in
cludes shafts and tunnels already driv-
en-, amounting to upwards of 1900 feet is
being continued, and the vein through
out in first rate shape. The
Lower California mining excite
ment, says the San Francisco Exam
iner has largely gone up in blue smoke
or something more ethereal. This is not
among things unexpected. The reports
from there were not of a nature to en-
courage large hope. There doubtless IS
much gold in Lower California. but
there also is disheartening scarcity of
water. and until men with money sIfTi-
Client to purchase water at any price
are attracted thither, gold mining on
the peninsula will be confined to little
more than an occasional scratching of
the surface of the earth. The
men who went to Lower Califor-
mia at the first rumor of gold having
been found there in quantity generally
will come back as soon as they are arl e
1t is dry and sterile land. and. with
the yellow metal only to be scratched
from desert places, there will be little
to attract or hold them. The
Baja California gold excitement
may not be absolutely a fake, but it
is not far from being the first cousin to
one.
The glacial drift which swept 1own
from the northward and covered the
Canadas. New England and middle
states. and extending as far westward
as Minnesota. brought with it large
masses of rocks, unfamiliar N the
region where they are now found. In
New Jersey huge blocks of granite are
found resting on the red sandstone of
the Trassic. In central Ohio consider
able masses of pure copper have been
found which undoubtedly We're de-
tached from the mass deposits of the
Lake superior region and transported
on the ice sheet several hundred miles
and dropped where found. The under
lying rocks of the drift area have been
planed down, secured and in some
places polished. Some of the harder
rocks still show the markings of the
glacier. and in places where excava-
tons have been made in gravel beds
and clay banks there have been found
several series of striae, indicating the
changing direction of the flow from
time to time, the later situations not
having oblterated the earlier.
There is difference between vein
and zone. A vein. whether large or
small, has clearly defined limits. wheth-
er all the material between the walls
be ore or not. A zone is not necessarily
sharply defined by walls, the mineral
occurring along a considera bic lOnSi-
tudinal extent in a more or less irregu-
lar manner. The masses or lunches Of
ore may or may not be connected. Eth
er vein or zone may lie horizontally
or stand vertical, or at any intermedi-
ate angle. A fiat vein is not necessarily
a blanket vein. BY a blanket vein is
meant a sheet or deposit of ore in sedi-
mentary formal ton, which is the result
of replacement or impregnation. When
one wall is composed of eruptive rock
it is called a contact. This was the
original meaning of contact vein. but it
has since been mscelaneously applied
to veins and deposits occurring between
wall rocks of unlike character. The
fact that a vein occurs at such contact
does not indicate value, as there are
veins of great value occurring between
walls of the same formation.
p. A. O'Farrell well-known mining
expert who has been visiting British
Columb ia camps, writes of the Mother
lode of the British Columbia Copper
company, at DeadwOod: II measured.
myself, 2O2 feet of solid ore between
walls in this mine. 1t is not a high
grade ore. but II will do to work on a
large scale, and some day it will make
a fortune for its stockholders. The
Mother lode people are building a smell
ter. and the railroad is graded to within
a mile Of the mine. and will be ready
to haul ore in 90 days
Samples of ore taken from a three
foot ledge, from the face of the 700
foot tunnel in the Blue Jacket nine,
Seven Devils. Idaho. assay 80 per cent.
copper and $14 in gold. This is from
the 5S0-fOot depth. Ten teams are now
engaged in hauling ore from the prop
erty to Weiser for shipment East.
1t is reported from Greenwood, B. c.,
that an important strike has been
made at the Summit camp, by the rail
road cutting revealing two veins on the
Emma claim. One lead is said to be
33 feet in width and the other over 100
the latter being iron and copper ore.
Copper has finally taken a place in
the procession of metals that have been
coming from the Bunker Hill at Stock
ton, says the Salt Lake Tribune. and
there are those who believe that with
depth the lead will be entirely replaced
by it. Such a change has previously
occurred, says the patriarch, and he is
reckoning on it there. From samples
assayed by McVicker yesterday, Al per
cent. copper, 30 ounces of silver, 49.4
per cent. lead and 81 in gold per ton
was obtained. The chute from which
the samples were taken lies upon the
foot wall and is cemented to the lead
silver chute that was first encountered.
At present there are 10 inches of the
ore in which the copper occurs, with
over four feet of the other. and ore for
market is being hoisted as rapidly as
it can be broken down.
Potato Bread for Horses.