New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1852-04-09

IL M Oh ? The vein immensely valuable At Auburn
there Is considerable good qaa''z, ard sooa de o'
iuts5stt Is manifested in ms slrd of ninirg no
cUslz o. Grass Vaiey IS veff a1Intans, ricn' etSi
Is GuarTitc. apo easy q Access. Ngch o. !. Is ue-
crnposec neatly all IS fractured as u lay Ia Tug
v.i.s Nood snd water gre abundant. All ths
Il Is luuiie.n,l believe are dong seu, ana lhoss
e. Pcok, Collins, Weizer, Rocky Bar, ani a'eN
others ~hose names cannot call To mno, ~e'o
dong a land Office busiDess
me-. IA enc cuon Quartz on the Yu,a aad
Ftatssi Risss but many o those points are oiinsIi.
81 se,sss On Honcst CresE are soGe eIceuen.
ytIs hcE' ~as No pnps ssr1 tstti.,I, - pro.
CyIe 5000 iocauons' They arc ne'd ge"1ray ~
different parties. and t0s sums no' unffequenty us
uzbd.d are. IN my Judgment. outraseonsy hk.s
Most OF the machinery that | saw WAS sum s ant
nifeIhby defective, purchased and pus up ~ H'p
hazard, by men destitute of skill, experiehos a. a.
sci.Ice. That failures have NOT oeen reuus", -
one OF the best evidences of the value OF the quartz
that has come 10 my knOwledge we 4ave e,s.n.
lztd a company. and shall send nan 70 'ne S'a''S
by the rext steamer for machinery"
A ply stefan who has spent three years IN tue
mining regions, and engaged nearly all the 'iiho
in Placers and Quartz mining, writes
"lhaye ,yaversed the auriferou belt from tns
south to the north, and generally where nave Gun.
rayIne or surface washings have found sufliefous
npa,,z Most Of the achinery at present usoi' ms
a deficiency OF power and is deective, ana MS VI
the amalesmaiiODs are very Imperfect 49,
n e'er the southen TO the northern miBes auo pos"
have their advantages prefer those OF the norm
en- because the colo is more equal througnou' .uo
rock and is generally dug out easier IheIe .
greater abundance OF wood and water Two w
1orfsnt he lbs in quartz operations have particular
reerer ce no " 10 the Grass valley distnc' luese
mines are easily got al both summer ano Sinlel iioh
San Francisco, and the soil around this sec'Ioh -
csnable of producing all the hay, gram, AMI yess-
tab es Northumberland The climate IS delgn'-
.ni1. haa,,ny The mines about TINS place
aye,sse ahout s4O a tun after the specimens have
hesn c,llled | am confident that IN piscins he
average Weld OF quar'z rock OF Grass faiey Az mo
S35 10 $40 tun place the figures very low
The extent OF the quartz is such Una. WI, h;s ~
great many years to exnaust the nuhe' ~ -
! heir rich deposits"
A gentleman from the Grass Vaiey Ds'iict
writes TO his friend in this City that the vein
upcn which he is located will produce at the mill
or 10 cents per pound $50 lbs OF the quartz OF an
average char acter produced at the mill SAT
gentleman whe left Grass Valley on the
oath of February, and arrived in this City on
the Stat of March stated that the quartz continued
abundant and good and the mills were doing ex-
ceeoinsly well.
An old quartz miner, and of much practical
and scientific experience states, that stamp
mill competent to the reduction OF 100 tuns o.
ousf,7 rer dsy could produce One Million OF dollars
annually. THIS gentleman left for Europe last
week on a quartz mission and intends to erecta
mill of this description atthe earliest possible day.
The Nerada Journal, in speaking OF the move
ments in Grass Valley, says:
"Rich quartz leads continue to be met with, and all
the mills IN this snship With one exception num-
bering some seventeen or more. are now running
resula1l, and with good profit to owners"
Last July quantity of quartz was sent from
Grass Valley to Europe with view of ascertalnlng
its average value Of amelting. The following will
throw some light upon the subject
The London Times and London News both
have published the folio wing facts:
"In November last lsays the former Journal forty
two tuIs Of Cafornia gold bearing qiartz we're re.
! shipped from New York TO London by the house OF
| Rowland & Aspinwall. The ore was from Grass
Valley, Nevada County, being of variousdesfees OF
richness. The average result was fl00, or nearly
| $500 10 the tun. The picked specimens were equal
to Ct 0o0 or $35 600, per tun Several experiments
were mace win this rock in stamping. IN order 70
throw seine Light on the nature OF the machinery ex
pecIt to be used in California;
There are now no less than thirteen Califor-
MIA Gold Mining Companies organized in Lon
don, with an aggregate capital Of over seven
millions OF dollars.