Eureka weekly sentinel. [volume] (Eureka, Nev.) 1887-1902, 1897-08-28

ha-g mines, and through the Uncle sam
and Hamburg mines further 10 the soutn-
yard. II faults all formations, but Is ~
self nowhere faulted or dislocaied so lar as
can be determined. 1t has been traced
anon The surface and Is identified under
ground By its filings Of rhyolite, ore,
ledge material aud composite OF rbyoiite
and elsy, the latter having been produced
nv .ttrItion where the walls are close to-
getner or nearly so. 1t hiss 9 most import.
ant bearing on the present structure oil
Ruby Hill and the country 10 the south
ward. as also on the relation OF the
ore bodies TO zach other. Throughout Its
entire course it Is found to be the key 20
tbe structural problem OF the Ruby Hill
and Prospect Mountain minersiized zones.
The country southwest, on the iootwall
aide OF the fault, has been raised several
hundred feet relatively TO The hanging
wall. /. is probable that there was up
hesyai aud ~subsidence. but that the latter
exceeded the former. Taken in connection
with all OF the mines TO the southeast, itls
found 20 be q fault plane slong which the
whole southwestern country has been
raised from 500 10 1900 feet. There can
be no question that the key TO the problem
OF deep mining IN Ruby Hill and Pros
pect Mountain will eventually be found In
the Ruby Hill fault. 80,
The limestone Of Ruby Hill Is divided
into two sections, which We will designate
the s~'front'' and ''bsck" limestone. Inc
latter forms 3 wedge which, taken tnrousn
,he Eureka Con. mine, extends from the
~surface downward to near the l5tn lever
end lies between the qusrtzite, the face OF
which has q mean dip Of about 4O degrees
and the fault assure, which dips al an an
gle OF about 20 degrees. This. which we
shall call the upper wedge, hes on 'ne
southwest or footwsll aide OF the assure
and has been raised in this locaiity ABOUT
I.40O feet relatively above the lower wedge
and usrrows 10 & thin edge at its owe
extremity. II il remarkable for its crushed
and broken condition. IL was IN TINS
wedge that all OF the tremendous ore bod
les which made Ruby Hill famous in the
early DAYS OF the district were mined.
TIE exploration Of the front limestone.
which o~verlies the fsul. TO the southwest,
has no. been sufficient TO determine
wbsther either large deposits or any ore st
All NAV be found in 10. From the narrow
mart OF the upper wedge, downward, ss
seen upou the 18th and 14th levels, as well
"a upon the 1,200-foot crossut from the
LOGAN shaft, below the 14th level OF the
Eureka Con. mine, the face OF the quartz
tie forms the fooivsll OF the fault, the lat
ter maintaining its dip at an angle OF 10
degrees. the same as il does above. Below
the 18th level, With its thinest edge upper
most and it's form inverted. as compared
with the upper wedge. but situsted upon
the northeast or hanging wall eide OF the
fault is q
LOWER WEDGE OF LIMESTONE
Identical in character with the upper
wedge. This is crushed and shattered in
precisely the some manner, and, subse
duent to the upheavsl a subsistence
along the fault line, was doubtless an I'M
divided part Of the block OF Limestone
which forms the upper wedge.
The future Of Eureka District viii de-
pend largely on deep level mining; not
that the levels near the surface are ex-
hsusted Of ore, for on the contrary, there
are hundreds OF the smaller mines and
prospects Of the district capable OF pro-
ducing the precious metals that are seldom
or never talked about; but there is no
question Of doubt among the experienced
miners who have worked on the deepest
levels of Ruby Hill that there are bodies
Of ore to be found in the lower wedge OF
limestone az valuable as those which
+ ~ Lo-I.-n "a tka
were e1casa'eo III 'n'o' y
upper "euse.
ing ~ 49, enms y,
require 'ne 1peLai hyssads ~
money. no ouu'-peiu - Sor.rs.
tnoussnos' PosSioiy muaNos ~. ~ Tni
o1' "nen ~ 49, 49,
ress oon' anu .G'nn 1aI,.na ~ S;v;daOSs
paia o'e. . HnaSos aaoa,a wasI,hr
snu usue PeeP ~,
,hs o,a 4. tnovn Al sn,ar The lower wedge
20 r;mos,ona and N 90 down below sny
Saa.h 20, s,,s;nsa IN Rnhv Hul. il Ia mo,
.n~ra.snn.hia 40 hal;ava that deener ex.
nia,at;on In .ba Iowar sdyaw would nav.
W nnis ,sason given ,o the nublic by
| ,ha Fn,srs consoliS.tsd manseement for
49,, s;nt;ns a. T'ocsn shsft desnar and
osnssnr.,;ne a. ,ha ioaa haIow ths LOGAN
1ooo,soo, laval wsa hat the maobinery
mo, ths T,ocsn shsft Was in.deouate for
az Anal ,aoniramsnts NJ arsinine the mine
- usssr AMI rsisino the material broken
nndayeronnd 20 tbe s~nrface: thew were nm.
%viII;ne Al continue draining the hill OF
water nnIess ona or more OF the companies
,hst wara onarstino In Rnbv Hill would
diviaa ,ba bnrdan Of exnense with them
IA 4. . seitIa6 fact that The machinery was
| dafeetiya Tor the general reouirements Of
he nina hpt tbe Volume az water 10 be
oor,endaa v;th ara ali ~ Abs m Material that