The Anaconda standard. [volume] (Anaconda, Mont.) 1889-1970, 1899-09-20

| What is clay?" asked Mr.. Hughes.
| CLAY is a combination of silica and
| alumina, with a little lime added al
| times; silicated aluminium" said the
| witness.
| Would you call it clay when it is ir
| groundup state, without it being ce
| mented by water: in a powdery state?'
Yes, SIR"
! The witness said that porphyry, some.
times, was ground up and formed clay
| He had seen seams of pure kaolin pro
duced by the decomposition of por'
| phyry.
| DO not the books say that porphyry
is decomposed and turned into clay by
the action Of surface water?" asked Mr.
| Hughes.
| Yes, sir" said Mr.. Bulky.
| Then If you found clay near the sur
| face that had been leached by water
| you could not say it had not been por-
phyry?"
| NO; should say it had been por-
| phyry most probably.
| The witness said that the indication
| of the clay in the cross assures took
| place after the grinding had ceased in
| the assures. He could not give the ex-
| act point in time. He thought the clay
seam at the place where the sample
| came from is about a foot thick. He
had never seen anything quite like it
in any other part of the mine.
The 450 plan map was brought out,
and the witness said that he had not
seen all of the porphyry that is repre-
sented in a yellow figure on the map.
as east of the faults and terminating
against the east one. He had seen it
where it is shown in several openings.
Does it not extend west and south
around in between the faults?" asked
Mr. Hughes.
mo, SIR" said Mr. Bulky.
IF the porphyry did extend in be-
tween the faults here, what effect
would it have on your theory of dis
placement
Il don't think it would have any, but
l don't believe it extends there"
The witness said, in answer to an as
srmed case, that If the porphyry went
through the faults continuously it
would show there was no faulting. But
no such condition existed.
He said that the clay slip cuts off
the porphyry when the latter reaches
the east side of the east fault. None
of it shows along the working running
along the fault, nor does it show in a
north and south drift between the
faults. He had not been in the big
Slopes south of this drift, and the
ground was unopened to the west.
The 500 level map was next hauled
down, and the cross cut called the
powder magazine was discussed. The
witness said that he had been in a
drift at this point for 20 feet, and was
sure there was nothing but granite
there.
state whether there was any por-
phyry in this drift said Mr. Hughes,
indicating another working.
There was no porphyry there; I'm
sure of that" said Mr. Bulky.
Asked If there was porphyry at some
points on the 600 level he said there
was not
He said he did not find any porphyry
in a number of workings inside and
west of the faults on the 700 level named
by Mr.. Hughes. He testified to the
presence of porphyry on the 700 level,
on both sides of the faulted area, the
western body being farther north than
the eastern He said that he correlated
thin streak that he found on one side
with another that he found on the
other, though there was a space Sow
eral hundred feet wide between.
The porphyry shown on the 800 level
was gone over next. There is a body
of porphyry east of the faults and one
between, as shown on the map. The
witness said that If it were assumed,
from that the fact these bodies are
somewhat on line, that they were of