The Anaconda standard. [volume] (Anaconda, Mont.) 1889-1970, 1898-03-08

demarcaton between the country and
the lode liz not as we'll defined near the
surface il Is further down.
'On e-cross-examination Mr.. Forbis
asked: Have recent developments
changed your mind in regard to the
extent of this zone?'
II did not have a definitely decided
opinion until the recent developments. -
Would not further developments
change your mind again?'
Il think not. l think the develop
ment is now sufficient to show the zone
definitely"
But you have changed your opinion
since you filed that affidavit?"
II had no clearly defined opinion then
! had only partially formed an opinion
based on the partial development"
Mr.. Forbis then introduced request
signed by the witness asking permis-
sion Of the u. & NJ company to make
| a raise from the 700 level Of the Noun
tain View on the Rarus south vein.
| rs not that what you now call the
i SGsnlsa vein of the St. l'aWTence-Rarus
Yes"
Did not you therefore at that time
/ consider that there were two separate
and distinct veins. the north and south
Rarus?"
Not more than at present. The two
Veins ] considered to be both in the
! same vein"
| Mr.. MacFarlane was then excused.
Francis L. Freeland of Aspen. Colo
! a mine manager, was the next witness
| for the defendant. He graduated from
| the University of Pennsylvania and had
/ a postgraduate course there. He had
| been engaged actively in mining since
| 1881, and in examination and investiga-
ton of mines. He had examined the
Rarus claim a year ago when he spent
week in examination or the mine, and
the past two weeks he had expended
about every day in the mine. The wit
ness said he first tried to get a general
idea OF the ore deposition and the coun-
try rock. He noticed the country rock
In a general way was granite, but much
altered in some portions. The quartz
became prominent in some parts. There
We're occasional bodies of an eruptive
rock known as quartz porphyry.
with respect to the ores" said the
witness, Il find they occurred in
group of associated assures lying with
in stretch or belt from $50 to $50 feet
wide extending in an easterly and west
erly direction and giving a pitch to the
south OF about 20 degrees. The vein it.
sell 1 remarked as a zone of interIacing
assures. the foot wall and hanging wall
OF the lode being of granite with CON
sidera Bile granite in the lode itself The
lode is made by this group of assures.
] am led to this opinion by the opera
tons and workings in the lode and into
the walls by the Harris d Lloyd tunnel
and the 50-foot Rarus eross-cut. The
Harris & Lloyd tunnel shows the coun-
try 10 long distance south of the lode
and the Rarus cross-cut shows 1t to a
long distance north of the lode By
these workings | observed the condition
OF the country rock where il is not
affected by the deposition of ores. The
granite there is not so much altered a
in the lode. There is a greater preva-
lence of mica. The rock is generally
harder and there is an absence of the
deposition of pay ore and so far as
appears TO the eye. an absence of the
deposition of copper ores. There is
rather more sulphide of iron than sui
phide of copper. Within the lode is a
set Of joints or assures i'll the rock
which are substantially horizontal and
which connect the interlacfng assures
which are nearly vertical. The granite |
is stained and the mica is altered and |
the rock itself is of more grayish color |
and Of a chalky nature. In other por- |
tons of the lode the feldspar in the |
mica il decomposed and partly removed |
and there are bars of very hard quartz !
rock. SO that In some respects the vein |
is rather different from other assure |
veins. This lode Is in fact an aggrega- |
ton OF such assures. The water deposit |
IN the mineral has eaten into the walls |
ON either side and the streaks have |
not well defined boundary.
After a general View of the forma- |
tion OF the mineral and its deposition in |
y
ton, particularly of various workings in |
the mine. At the end of the 500-foot |
ercss-cut | discovered another zone or |
region OF mineral deposition similar TO |
the Rnrus zone. Between this Mountain |
NiewSulivan lode and the St. Law |
renee Rarus lode is a small connecting /
tissure which runs from about the No. | /
Rarus shaft to the Mountain View /
shaft 1t is very narrow and steep by t
comparison with the two broad lodes /
The values in both these lodes consist /
principally of copper ores with a little I
silver. The copper ore, when oXydiZed |
by the action of the rain water coming /
down from the surface, turns TO blue
Nitriol. That is why the first 300 feet |
below the surface is nearly destitute of /
copper ores and we get deeper than 300 I
feet before we get an exhibition of the +
sulphideS of copper which begin at a
depth OF about 800 feet and ore of the
same character from there down. In I
the western and eastern portions of the
property the greater mass of ore has
been taken from the ore streaks which
have greater value than the balance of
the lode. so that stopping has been done
in the streaks Besides these streaks are
other connecting streaks.
We also find continued the Witness
near the center of the plane known as |
the space between the two slip planes, or
faults, that phenomenon of an exceed
lnSly bToau set OF square sets. assO-
eiate that enrichment of the lode with /
the robbing of the oXydiZed lode just
above it. The mineral was leached OUT
just above the 300 and redeposited in
distance of $50 to coo feet from the sur
face. | account for the extraordinary
widening by the redeposition OF the min
eral above in the sulphide zone. ] be-
lieVe the two assures which have been
referred TO as fault assures had some
thing to do with the deposition of ore in
this shape and in this region. l think
the ore above was oxsdized and leached
out and collected near one of these clay
seams and caused "a broadening of the
lode at this point and has disintegrated
and decomposed the lode at this point
more than elsewhere"
The witness said he had tried in the
oxydized district above to trace out the
nd nn MI I