Eureka weekly sentinel. [volume] (Eureka, Nev.) 1887-1902, 1897-11-27

ores, which were more or less mixed with
limestone, that the lode had yielded above.
IL il calculated that the subterranesn
disturbance which created the Ruby Hill
fsult raised the footvsll side Of the Pros
pecs Mountain limestone. through the Eu-
reks Con. mine, about 400 feet.
PROSPECT
Rises to an elevation considerably higher
than that Of Ruby Hill, showing that the
erosion of the latter locality must have
greatly exceeded that Of the former. Pros
rec, Peak, the highest point on Prospect
Mountain, has an elevation OF 1904 feet,
and the highest point on Ruby H~illreaches
Al altitude Of only 1921 feet shove sea
level. II is here seen that the difference
10 the elevation Of the i've points is 2,31S
feet.
The outcroppings Of the ore bodies Of
Ruby Hill we're larger than those Of Pros
pect Mountain, but the difference may be
accounted for in the excessive erosion Of
Ruby Hill. In the main body Of Prospect
Mountain the ore bodies generally augment
in size with the increase OF depth. The
deepes, workings in Prospect Mountain,
following the ore downward from the sur
| face, are found in the Diamond and Excel
sior mines, about I, 600 feet below she top Of
the main ore chute and q little over 500 feet
below the main tunnel level. The surface
VI Ruby Hill 10 relatively fiat when com
| pared with tina, of Prospec. Mountain,
which is doubtless due TO the greater ero-
| zion OF the former, and il is therefore fair
TO believe that the outcroppings OF the
Ruby Hill ore bodies were, At one time,
| no greater than those OF the Diamond and
Excelsior mines az the present.; and il the
theory generally accepted here-that the
ore solutions were forced up BY infltrs-
ton and dynamic pressure from bellows
correct, that relating TO the difference in
lie OF the o~utcroppings OF Ruby Hill and
P~rospec, Mountain Is not without Q ress.
| enable basis.
The question OF deeper exploration in
Ruby Hill and Prospect Mountain has re.
| Gently been discussed here, and there has
| been no reason sdduced to show why the
| work should not be remunerstive, II has
| been demonstrated that the ore bodies still
continue going down in the caves, below
| the deepest workings of the Diamond and
Excelsior mines. II is also shown that the
| ore continues dipping below the deepest
excavation in the Eureks Con. mine ; and
| there is reasonable probability that ore
| bodies may be found below the deepest
| workings OF either OF the Ruby Hill mines
as ainsble AZ those which were exc.ysted
| above. II "a manifest that the limestone
| bodies of Ruby Hill and Prospect Noun.
| tain. Al presen, separated by the granite
| and Prospect Mountain ousrtzite, were
originally one and the same that the dis.
| connection occurred through excessive ero-
| sion above the Prospect Mountain ou.rtz.
| lie. ana tba, the difference in the extent Of
| he rasnso,iye o-ntcroupings mon Ruby
| BiIl ana prospect Mountain ia due 10 the
| ~erosion, UndoubtedIy the erosion ocour.
red s-nbseonen, "a the uphssvsl and rels.
ice cses,ian NJ The Rnbv HiIi fsni,. There
can he b,t Ii,tle ouestion a. 10 The imnor,-
.nt ba.,;noo ~ n af.nIt IN the nyasen, s.ruc.
,nrsos pin nan and ,osna Monntain
.n5 he ,alstion q, The o,a bodie. 10 each
r. rha ,nr,oa, he. hssn m.n1fs.,ad
.srenah d;I;aon, ;nves,;gs,;on ;ns,;ss,sd
"nSern.,;a,sI s,.bori,v ana /, IA on;,a
soInsions nsssed mn tbropeb ,be great aso
1850 Inv me.ns n, Modification and neY.
ceis,ion ,b,onch the .esms in The oonntyv
~ 1a,a consavas 10 and danos;,ad IN
- o,Ia. - ~ Az