The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1912-08-01
INSPECTOR VISITS TROY MINERAL DISTRICT

Robert N. Bell state inspector of mine recently made
visit to the copper mines and prospects Camp and Bear
creek Custer county and gave out the following IN an inter
view there:
The Troy copper deposits situated Camp creek and
Bear creek in granite formation in the exposed bed
rock and slopes of the creek channels where they have
been uncovered by the erosion the plateau lava beds
when these stream were formed.
The granite formation shows decided variation through
the and schsy textures 1t pitches at very steep
angle the northwest and strikes northeast and southwest
which also the general strike and dip OF the ore courses
whose locazaon to have been influenced by veins OF
pegmae that both conform and the bedding planes
of the enclosing formation
Several wide dkes of notified fete porphyry appear to
strike north and south through the of the district and
probably the primary of its subsequent mneraza
ton. -
The ores of the district consist almost exclusively OF high
grade copper sues and their surface alteration products
Of oxides and caronates Of copper These are invariably
associated with decemenaed garnet and doe minerals ana
heavy massive garnet rock through which the hg grace o
purple and yellow copper suphde grains well decenaed
and if developed quantity would doubtless afford yer!
profitable concentrating mineral. ,
The O. K Olson mine is being developed with vertical
shaft now down 70 feet where short rosscu shows II feet OF
ore The TROY Mining and Milling company nearby is also
down 20 feet with vertical shaft and has some interesting
showings of the class Of ore The Haset clam recent
y bounded to Butte Mon party has copper stained iee
near one of the big poph dkes 20 feet wide and some RIOS
Of massive garnet rock in the creek bed very interestingly
specked with soft blue bonte right at the surface
reported that this property to be tested at depth win ~
mond drill which would DE very sooo wa! u ~ Hitting
it's merits m - ,
Adjoining the Halseth claim to the east the Troy Cold ana
Conner company has very interesting deposit OF mineral that
has been opened by quaryke cut 20 feet deep and 10 feet
wide which exposes twofoot vein of pegmatite that hes III
the form of flat anne that carries marginal ornatlon
of close grained blue gray garnet rock two to TOUR e' o
pretty we'll decemnated with borne and said to give aver
age values of three per cent copper and also important
values in gold and silver.
At Bear creek the Inland Empire Copper company mas run
series of shallow tunnels aggregang 1900 feet IN length ana
largely following of lenzy nature but sweg o
to several feet width in places and containing some nuggets
of pure chalcopyrite and high grade copper oxae e
said 70 have given old assays high 500 per ton IL
cold The formation this property decidedly schlsty and
much easier to drive than the massive granite on
creek but the borne mineral does not show so
High gold assays are reported from all these properties ana M
also generally carry little silver which together with h
high grade copper minerals they contain would cooe 10
ford rich shipping product Of concentrates developer
sufficient quantity to warrant milling equipment