The copper era. (Clifton, Graham County, Ariz.) 1899-1911, 1908-08-20
AIsdOrfs Report on Home Copper Com
Dany Claims.

pany Claims.
The following is a report made by
F. C. Alsdorf, E. M, in January,
1903, after a careful examination of
the Home Gopher company's prop
erty. While this report is now five
and half years old it still will be of
interest to the many stockholders in
this company, who may have forgot
ten it long ere this. 1t may also be
of interest to prospective buyers.
The report follows:
The property consists of d group
of twenty three claims carrying their
main values in copper.
The group as whole is crossed by
several well defined mineralized por-
phyry dykes. The dyke passing
through the Hobson and Peacock
claims shows the best naturalization
on the surface. The majority of the
development of the group has been
done on this dyke. All the workings
are in the leached zone on the sur
face. The copper which originally
existed as chalcopyrite or as sui
phide of copper and iron has been re-
dissolved as copper sulphate and pre-
cipitated as copper sulphides below.
The workings in the Wine on the
Hobson claim are now approaching
this enriched sulphide zone. There is
no doubt that you have the zone of
sulphides below you and the only
question to determine is the per
cent. of copper in the general aver
age of the dyke matter. 1 should
therefore advise the continued sink
ing of this Wine and a crosscut from
the bottom of the entire miner lized
zone when the sulphides are reached.
On Stray Horse mountain find the
most extensive naturalization of the
most entirely mineralized mass of
porphyry. The surface is now leach
ed as described above and only shows
copper in the form of small seams of
malachite. The amount of iron
oxides and honey combed quartz on
the surface proves to a certainty
that vast bodies of sulphides exist
below, that these sulphides also carry
copper is evidenced by the fact
every ten-foot hole in the mountain
shows some copper, no matter where
it was dug.
This iron oxide does not occu
massive as in limestone formation
but in parallel seams and strata with
honey cOmbed quartz.
A remarkable fact is that these
stratas do not run parallel with those
in other parts of the district THAT is
northeast and southwest) but almost
at right angles to this direction.
They point to a high porphyry ridge
Immediately across the gulch from
Stray Horse mountain.
This ridge has the same direction
as the ore strata in Stray Horse
mountain. l should strongly recon-
mend the exploring of this mountain
with cross cut tunnel. You are
certain to strike enormous bodies of
sulphide ores. Whether they con-
tain enough copper to realize a profit
above expenses of mining and treat
ment is a question to be determined.
1t is useless to prospect around on
the surface where the leached zone is
several hundred feet deep. The sui
the Morenci district and the quicker
you go after them, and get them, the
quicker you have d mine.
anticipate that you will find an
enriched zone of ore in this noun
tain that will equal anything hereto
fore found in the district. 1t might
possibly prove to be mostly iron
pyrities, but the fact that all the
workings on the surface show some
copper, inclines me to the belief that
you will find considerable percent
age of copper below.
There are other dykes on the group
but none showing the former exist
ence of sulphides in large quantities
as does Stray Horse mountain.
L should concentrate all work here
for that reason. If your expectation
should be realized on Stray Horse
mountain you would then feel justi-
fled in attempting explorations in
other portions of the group, but the
first work on any proposition should
be done on the most favorable surface
indications.
1t is difficult to trace any particular
dyke on Stray Horse mountain. AS
stated before it is a mass of miner
allied pOrphyry and close resembles
Copper mountain at Morenci.
The exploration tunnel should be
located with reference to your mill
site on Eagle creek and all work con-
Quoted with the idea of large future
operation in mind.
GRADUATED Sore Eyes Cured.