The Salt Lake tribune. [volume] (Salt Lake City, Utah) 1890-current, 1906-12-26
MINES OF DIAMoNDFIELD.
Little Known Section of Goldfeld Has
Two Strong Veins

on the Great Bend Mining companys
ground at DIamondneld NeV. there are
two veins. These have been developed by
much trenChlng on the surface. which al
though n good and cheap way OF pros
peCting, proved costly for the company
that did H. because so much time was
devoted to this work that there was none
LETT TO do any crosscutting from the shaft
before the option expired. When the
present company took the mine, It began
underground development work. says the
Engineering and Mining Journal. In this
property there are two veins, viz, the
north and the south. The south is the
richer one; there are three leases on "
covering about 500 feet ON the vein
This vein Is nearly vertical and strikes
east and west. II Is from three 10 fve
feet wide and has quartzose gangue.
This mine is remarkable In being one Of
the few In the GoldAcld district In which
tellurides are found. telluride OF iron
occurs here, and with II the ore is high
In gold. About 800 feet north Of the
south vein there is an east and west vein
which dips about 60 degrees to the south,
II is developed by a accompaniment
footwal OF the vein. This vein has been
found 10 he wide wherever II has been
crosscut. From the 200foot level cross
cut has been driven through the vein.
The ore on the 2OO-foot level is fne
grained sulphide scattered through de-
composed andestte country rock which
has been silicified In some places, but the
slllcihcation is not so strong as In the
upper levels. Near the hanging wall there
is streak As feet wide. which is said
TO assay SIS TO $40 per ton. There Is
seam of tale mud. about eighteen inches
wide. which assays SIS per ton. The re-
mninder of the vein assays from 81 10 $l2.
Above the 200-foot there are levels at l25
feet and sixty feet The ore above the
water level Is strongly oNid!zed. but once
In while some telluride ore is found In
the upper levels.
Along the l25-foot level there Is a fair
" continuous pay streak about two feet
wide. The ore from this is sorted up 10
grade Of about sos per ton for ship
ment. The vein as whole averages
On the slXty-foot level the vein has the
same general characteristics as on the
l25-foot level. The Black Butte mine is
situated near Dlamond1eld and is the
farthest extension OF pay ore in that d.
rection from Goldfeld. The vein runs
northeast and southwest and dips 10 the
northwest; ~ outcrops on the south side
OF Black Butte and has been opened up
by trenches and pits for 500 feet along
It's strike The top part OF the vein Is
opened up through crosscut drift, from
the south side Of Black Butte. This top
part IS almost fiat for los feet, dipping
only about degrees. but then IL steep
ems 10 40 degrees. 4 winze tfty-elght
feet deep from the drift follows this vein
degrees to northwest The highly in
cllned part of the vein is also opened up
by a vertical shaft
on the 1l0-foot level from this shaft
the vein has been opened up for 200 feet
along its strike. The vein averages
about SIX feet In width. three feet OF the
ore assaying $l2 TO Sl4 per ton. Some OF
the ore goes as high as $3.50 per ton. On
the north side of the mountain from the
Quar,zte claim belonging TO the same
company (the Diamondned- Black Butte
Consolidated Mining company lessees
have shipped $500 900 Of ore. This is "A
parallel vein and is larger than the Black
Butte. Rich chambers OF ore, fourteen
10 fifteen feet wide. occur In It. while
there is a lot of mill ore assaying $40 TO
nor ton.