The Weiser signal. [volume] (Weiser, Idaho) 1890-1904, 1902-12-10
YIBW
Mining DISTRICT.
A BRIEF DESCRIPTION OF RAPID RIVER
PROPERTIES AND PLANTS BEING
INSTALLED THERE.

ties there is high grade ore. The
rock of the district is quartz, quartz
porphyry and common porphyries,
very heavily mlneralized with iron
pyrite, arsenical pyrite, and carries
generally principally gold, little
silver and sometimes copper. Sur
face ore is generally very much If
not fully free milling, but as usual
with depth gets base. There being
no zinc or lead and but little copper
compounds in the district the ores
are generally suitable for concentra-
ton.
So taking the district as whole,
there are great promises for the near
future, not in high grade ore on the
surface but with depth, and certainly
properties should 60 down here for
they are true fissures.
| Now, as to the outlook for good,
] big, permanent, producing camp,
I there certainly seems nothing lack
r ing. There is worlds Of timber and
o water, fine fat two miles long and
4 one mile wide for a townsite, and
d fine climate with lots of fish and
e game. The Rankin G. NJ Co. has
e water rights from which they can
g generate 35, 900 horse power, has
/ three groups of properties, the Star,
s Jackley and Champion group, form
|, erly belonging to the pioneers OF the
y district. the Potter brothers. Their
It ore averages thirty-slx dollars per
J. ton, though the company through the
n use of the Rankin process for leach.
ar ing ores free milling chsaply, car
OF work ores in many cases goinl
n only $2 per ton, and in no case re
ne curing over SO. 90 per ton to produc
GOOD profits. 1t is in this ability t
of virtually work ores from the surfac
IA down. or in other words, to max
rd any low grade base ore, free mil
id ing one so cheaply that what al
oic termed mere prospects may
les worked proftably, dispensing wit
es- doing thousands of dollars worth {
lite preliminary development work
lgh make a tmine," that is find sufiicie
yry high grade ore so as to be able
in ship to a smelter.
on A brief description of this We
Ken unique method is appended.
lels 1t is well known to all chemis
,ry- and metallurgists that nitric &C
sins when placed upon crude ores or &C
ced centrates, will remove from them
.ck- base matter such as suphides, arse
idle ides, antimonides, tellurides, copp
and lead, zinc, quicksilver, sll and lin
rite leaving little but the quartz ana g
and which, thus made free. may be say
Oh by pan amalgamation, copper pla
Jun any other free milling system,
and Rankin company using pan anal
IS Of ton. If any one doubts this,
Is him take a piece of rock conta
, be- some base matter such as sulphl
good of iron or copper or zince, leadete
py- of tellurides, pulverize 1t IN NOR
re is pass through sixty-to eighty N
des, screen and then put into soup
or other china or glass article
rface will stand heating, place Twice
,llars bulk of nitric acid upon 1T, ana
crop few drops of either wood or g
ankin acohol to it and heat the mass |
V has all chemical action ceases. de
lacey then find that if the ore conta
lghey gold, he can upon panning see
le ore .scolors" and that there is no
per matter left in the ore that W
r ton. cause quick to ''sicken' or INC
10 per The copper, silver, lead, II any