Bisbee daily review. [volume] (Bisbee, Ariz.) 1901-1971, 1910-05-03
REPORT Of THE B|SBEE
COALITION BY MALCOLMsON

rock of the entire Bisbee district,
and the granite on the Bisbee Goa
htion claims has broken through j:
The contact between this granite an
is copper stained in several places
and the value Of the property depend
On the possibility Of ore being dis
covered at or near the contact. o
n some Of the numerous quart
seams running through the granit5
in the vicinity of the contact
NORTHERN PORTION OF TIL.
PROPERTY.
The first exposure of ore visite
was in the group originally known
as tie North Bisbee. in the north
err part OF tn property. Here
the granite schist contact has tdrne
and ran northwest This fault or
contact which dipped mort. was COP
per stained and altered for a tota
width OF approximately twenty fec
AID the ore could be picked cut run
ming from TO 10 per cent copper
This cutcrop has been sampled
across many times, and carries be
tween two and four per cent cope
for its entire width A tunnel ha
been driven in along the contact
and two shafts sunk to adepth-I
am infcrned-65 feet, and some
feet Of drifting done. but were ful
o water a tunnel has also beer
driv $50 eet iato the schist. net
at the granite contact, to cut wha
appears to be a silicified seam {.
quartz ledge with indications Of cop
per. This latter work done doe
not appear to hava cut the ledge
SOUTHERN PORTION
The southern portion of the Coaii
tiOn property formerly known as tn
Eureka, consists OF a number
quartz seams or veins with work
done showing naturalization owe
300 feet in width in the granite
near the above mentioned contact
with the granite and Pinal schist
These quartz seams are accompan
led by indications Of copper. and tn
work done has been on some Of IN
most promising seams.
Three shafts have been sunk TO
depth Of from 40 TO 100 feet and wit
one exception are filled with water
The dumps show consid cradle aZur
tie and other copper carbOnates
mixed with silica, and the ground
would appear to be worth further
I prospecting. the carbonates carryin
II would estimate-high copper val
ues
CONCLUSIONS.
/ There is a resemblance between
( the schist granite contact at the
I Bisbee Coalition and the granitoiC
schist contact at Miami. and Inspi
ration near Globe, the schist is tn
same in both places. and the grant
rock has been forced up through a
both places.
Prospecting might very readily
open Up an ore body On the contac
or in the vicinity of the contact sim
liar to those in the granite porphyr
, near inc fludl sEuAHts III dApbS az
at other points.
. Prospecting should be carried o.
at as deep a level as the water vii
permit without undue cost Tn
amount CT water which viii have {
be handled is indefinite. The min
is $50 feet above the town of Bisbe
and the water should not be trouble
some In sinking the North Bisbe
shaft to a depth of s. feet, a sma
twenty-four hours daily. handled tn
water. and keeping II down wi h
difficulty. Just how much waite
would be cut by sinking the shat
another hundred feet cannot be e
timated, as there are no Other pro.
pects in the immediate vicinity "a
comparison, hut ] do not believe.
would be more than 100 gallons
minute
(SignedJ James w Malcolmson