, 1875-02-20
important silver d.oucs.

From the San fTdRciBto HttiFftH.
Tbs rcputed immenaity Of tho bonanzk now
undergoing Development Ia the Ophlf, Callfor-
MA, nud Consolidated Virginia nihoa has led 10
considerable speculation relative to tha YIELD ul
other &rgonttferouB lodea IN other countflts. II
IL believed in some quarters that tlla bonanza,
provided Il shall prove TO bo a. rich aud oxtep-'
sivo ~ it is computed to be. IL far from hotng
equal to ore bodies that have been worked in the
mues OF poru md Mexico. 4 consultation with
tho most reliable authorities on tho subject docs
the most reliable data that could be obtained OF
tho yiold OF the Mexican and Peruvian mines up
to tho commencement OF tho presnt century but
lc found 1t impossible to seYrogate his n,aterial
cral tligtrict bad yielded during. the $50 yeara
they had bean woried prior to tho time Of Ills
visit. The Standards Kept 10 record Of tho
product Of their mnos. The records Of the 1nints
as 1ss5-ropreaentcd tho, total yield .of
tho Mexican silver Mines from tho
Copquost to tho beginning Of this con
tnry, to bo e1,7o7, $4,000, to rhlcl. Hum
making tho grand total 81, or, 200. Another
writer estimates tho toal yield Of tho allyoE
1niuek Of Mexico, up to 1858. ut t12 ono 900 0oo,
which makes = wido didcEence betWecn him and
n,inss in Mexico have bean coining silver as tho
average rate OF 32o, ,00o, QUO per anntlm. During
tho first quarter Of this century. owing to internal
troubles, their coinage did not exceed $40 000
per atlnuH II aumooats eet1aato of t4o
Total yold Of silver during tho bostor part Of the
three ceptuilea Which II covered Mas correct,
thcu tho to.a, yiold up 70 laso csniot havo e1-
ceeled $4,000. .0oo,oo0 Tho Groas bonanza
forming tho mother vein Of Mexieo IL
iodo. @ 81 explored IN That cou1try of whose
product apy definite estimate has been
made. It's Yield during tho three centuries
It has bcen operated is placod a. $500. .000. COO.
l3,lt this reprosents the combined product Of ths
group OF mines OF Guanajnato. embracing
ia1Ka number Of separate and distinct corpora
tiuns. Tho greatest yiold OF tho VAlenctspnh.
the richsst mino III shia group, VAS el,0o0,0 GOO
duauaju juato vein was tho richest silver lods eyor
discovered prior. to the Comstoek, aud tile Va
lenclaunn tito 1chest mlne. ....
Tho Cer1o Dc Potoa mines Of Bolivia, former
| iy part OF Peru, yielded during tue period ex-
reliable data 1t communal, $l,0o0 O00. .000 in all
yer. In this estimats the royal dues Of ono
fh I'D the tmoun. a. snagg.oa DO ss nos spposss
| p1esouts tho product Of 5000 openings
| In tho eonical summit Of tho ailyer.
bearing mountain, which probably
represent In turn hnlf - many separste mlnea
to tlo!s discovery tile inlnes OF potosl arc repre-
aontod 10 have yielded Ut tie rate OF e3,250,00
i year, but this haa been considerably lassencd
during tho present century, owing, to tho In.
| t0tHbQ ~ uAs1s " tVusHAA VIVA 1t Ht INV
depths, Humboldt placed tho Anuual product
OF tho slyes mines Of Ystu. which thon included
lilo Corro do potoal group u 81, SOU, 900, baslng
hia estimats upon the returns OF the nlnt Ut
Lima.
Vary rich srgentiterona lodas have beon workod
In Europu. The ore has generally bo0n Of =
much higher grade th2n the ores Of Mextco and
po.t1, but tho veIna hase been narrow. and con-
sequantly mora difficult to work ure 1eprc-
ssntA that tho moan product Of the whole 4uantl-
" Of silver orc reduced annually In Mexico tonly
amounts to from o.1s to o.25 por ceus-tbat IL,
from to OUNCES per 100 tbs. the true Average
not potpR over al uunces." liz ma!ntslns that
1t IL by their greater profusion Of ores and not br
thels superior richuoHs, that tho silver mines Of
tho American nurpaAA those Of Europe. Ila
mining district OF FTeibeFA, In Sa1ony, the rich.
eat sysr-bearing district IL Europe, contains l5C
mines, yielding acomtiuatton Of silver, lsa1, COP
per, and cobalt, aud yet tho to:al IMMORAL FRO.
duct OF the entiTe district docs not excooG
q, ,U00. .0D0. The Sierra Almagror silver nincu
In Spain, never yielded In0re than t350, 900 year
and Tho maximum product Of tbs nefghbo1ipt
siIyoz minen Of Iitenlelencina VAS only ahon
$500 0No. Tho greAtest yield Of the silver mlne'
Of Kouigubotg, Norway, III any oue year, va!
oniy 4 quarter Of million dollasn. How mucl
thoso mines hAys WELDED since thstr dlscogeIy III
have not 1t present auy meanH of ascertalning
but II Ia evident that their total ytell would Gu
no asurs IL comparison with tho mlnos Of nsxio'
and EAfu4