The Anaconda standard. [volume] (Anaconda, Mont.) 1889-1970, 1899-10-06

the day before, concerning the oxid.z-
ing power Of rain water.
The witness said that rain water dis
solves rather than precipltates metals
He explained that sulphides are COM
pounds of iron and sulphur, copper and
sulphur and other metals and sulphur.
Sulphates are compounds of chemicals
or metals to which oxides have been
added, changing the form existing In
the sulphides. When pure sulphuriC
acid is released from sulphides in a
chemical change. there must have been
an excess of sulphur in the sulphides.
The witness explained a NUMBER oil
chemical compounds and elements and
chemical changes in response to Mr..
Patterson's questions.
Mr.. Patterson then read a geological
description of the region and mines of
Butte.
state whether or not anything was
said. in what just read, of re-enrich-
ment or redeposition,' said MIR. Patter-
son.
IT did not hear any reference to it in
what was read" said the witness.
Mr.. Patterson was reading from all
the authors read by Mr.. Hughes, and
he reopened Mr. Phillips al this point.
on vein Gaping or iron hat. The wit
ness said that the vein Gaping or iron
hat is the residue of the vein at the
top after oxidation, the insoluble min
erals remaining in it. Iron, which, is
the larger part of the iron hat, remains
as iron oxides, and lead. being the lesser
part. remains largely also.
The witness said that the soluble
metals may be carried off entirely by
the water operating as an oXldlZing
agent. He said that the iron hat of
the veins here--or the gossan, as he
also called it's over 400 feet deep in
some places.
Mr. Patterson read Phillips. quoting
Douglass, in which the statement is
made that there is a zone of re-enrich-
ment in the Butte mines about 200 feet
deep.
This is given here as statement
of fact. What is your experience with
reference to it, Mr.. Tyler said Mr..
Patterson.
'"There is nothing at all to warrant
the statement" said the witness.
What is the vertical extent Of the
sulphide region in this ground below
the oxide region?"
at is 54s feet in the Rarus; from the
30 to the 900 level
rs there any difference in the quail
ity of the ore anywhere. excluding the
area between the faults?'
Il found no difference. The ore is
the same on all the levels
The witness said that the iron hat, or
gossan. may be red. brown or another
color and be honeycombed. It is easily
distinguished from the sulphide zone.
DO you find any rich, decomposed
ores in the veins in this ground?" asked
Mr.. Patterson. after reading a detailed
description of various Butte mines.
mo, sir. There may be streak of
black copper ore at the very top of
the sulphide ore, but that is ALL said
Mr. Tyler
Mr.. Patterson read an authority
named Foster, who said that the re-
enriched zone in the Butte mines is
200 feet deep and that below it is the or
binary mineralzed veins.
What have you to say to that?'
asked Mr.. Patterson.
Il found no such thing in any of the
mines I have visited or in the disputed
ground said the witness.
The recross-examination was opened
by Mr.. Hughes.
You put some pencil marks on a
map yesterday to represent porphyry.
l want to know whether or not you
mean to indicate that the porphyry has
different direction than what is
shown on your 70Orlevel map said Mr..
Hughes. ta.
II did not mean to show different
direction" said the witness.