New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1880-03-22

feet. and tunnel 2.400 feet long has been driven
on the vein through the mountain into Little COZ
| tonwOod Valley. The most noted mines OF 'h'>
region, however. lie in q bed of cavernous Int
stone of which the outcr0p forms belt some SUI
feet wide on the south slope Of the mountain over
! looking Alta. descending ohquely iron the rla'-
staff 10 the Emma. The dip IS some 30 Z" 81 ''
ward the north into the mountain. Ibis hmcsVc"p
belt il not what It has sometimes been called
assure vein. hut Is simply y stratum co'i"im"''o
with other strata OF more compact and massive
hmestones above and below. More soluble 'han
the others this has been OF some tine honcycomoF'
by atmospheric water forming caves and galleries
In subse0uont disturbances these have heeL
| onenpd Nv fssnrcs through which the MN
eral solutions have flowed M from nelo",
depositing in all the cavities 10 when theS n""
Access sulphdes of lead, iron ana silver bE "Nl"'-
ton these sulphides have since been cohVeI'e" '"'"
| oxides and carbonates, usually porous rusty ~"
soft ores The great ore-body Of the Emma filed \
| chamber not unlike the Ports chamber at LnFek"
| Al the time of nv visit the Emma Mine was oelhe
worked on royalty, and the lessee was oceupeu III
cleaning ont any scraps strings OF ore that nau
| heon left in former working, and in Washing me
! d,u,ns ontsiie Of the mine No new ore-bodies hao
| hoep Il covered aud the great Ore-chain'cr nau
nartiolly caved in that u was boih dihcui, anu
| dangerous 10 traverse it through the cInS'cd al"
spl,ptered timbers 1t by no means follows now
| ever. that the property is exhausted ana haS oc-
come valueless as in all probability iutuie eHp'or|
,iocs will result IN the discovery of other ore
bodies; and IT is quite possible that the Einna
| Mine VIII regain its lost reputatlon'
The mineral belt Is here uaversed by iau't
mich ,asses from the Telegraph through the
Emma ground and is well shown III the Hll"o'S
| tpnnel Tho great ore-body is said 10 have been
| 1i ,I,,, foutf Int w
. tborourb probing of the ground with the diamond
driu oould hardly fail TO reach some Of the connec
tions of that ore-body, and probably deeper III the
mountain "a the throw OF the fault Is apparently
! in that direction.
| THE BINGHAM GOLD MINES.
BINGHAM Canon 10 In tn Oquirh range Of noun
| t.ins ON the opposite side of the Jordan Valley
from the Little Cottonwood Canon opened in the
Wasotch range Ii il situated about Twenty-Five
miles from Salt Lake with which 1t Is connected by
railroad The Bingham or West MoRntain mining
district has been prominently before the pubic 10Y
many wears, since number of productive mines
have been located there; of these the O'd Iele-
graph is about as widely known "a the Emma.
| The geological structure of the district Is briefly
rs follows, The mineral belt has bearing generally
A little north Of east and south OF west. snd the
mines are located In Al series OF heavy beds o.
| ouartzte and marble. which are intersected III va
rous directions. sometimes transversely. sometimes
| conformably, by heavy dykes OF porphyTy' Most
Of the mineral veins are situated approximately
between the surfaces of dacent strata but IN some
| instances they are found DESERVING the contact
| nlanes and cutting distinctly through one or
another of the prevailing rocks. In some of these
| veins the banded structure is very consmcuously
shown. and in all the walls are smoohed and stri-
ated-a feature generally shown In fssure VEINS, but
never seen in beds.
| IL il plain that these veins originally filed
with siiicious veinstone carrying large quantities
of iron pvrites and galena but down 10 the perna-
neut water level they now thoroughly o1lclzed,
and the vein material consists OF spongy, ferrn-
rnous sandy mass envciopng here and there mas rs
NJ carbonate of lead and carrying Q considerable
quantity of gold and silver.
For many wears the argeutiferous lead was the
only object of exploitation in the larger and so
called bedded veins. and the ochrey material pene-
trated TO reach this was thought to have no value.
IL has recently been discovered, however, that
this carries from 81 to $50 ter ton In gold
and silver and 1T is regarded as form
ing by far the most important element Ill the re-
sources of the district The system OF VEINS "hicll
has been described extends for some miles along the
ortcron of the strata mentioned above. and forms
several parallel belts the dip OF all beng nearly
uniform. and from thirty to forty-hve degrees ia
the northwest or these. the Old Telegraph is on tie
most southerly and lowest vein which has both
foot and hanging walls Of quartzite. The Yosemite
Jordan Utah Red Rover. Spanish. Stewart. etc
are on more northe I'll belts. The in these vein:
varies from twenty-five to fifty feet III thickness
and "a the strata are deeply cut by the ravines OF
3 cafons the outcrops sometimes $50 TO 400 fee
above the drainage lines and water level. All TIM
\ portion Of tho veins is oxIdizcd, and the or
: is free milling, yielding on an average per
( haps $40 to the ton in gold. Below the waite
' line the milling will unqnestIonably be sue
t ceeded BIZ sulphurets. as heavy masses OF pyrlte
D have been reached in the lower workings OF tn
. Nav Flower. the Jordan and the Stewart. Below
this level important deposits of galena undoubted.
a exist and for them the mines may perhap
I h. worked to greater depth; but the auriferou
nvrites. when of low grade. cannot be prOftab
worked by any process now known. Hence the gol
4 ores of Bingham which havo economic value ma
h be expected TO be limited to those PORTIONS of tn
n veins which lie above the present draining streams
= The quantity of of this kind. however, D
: | these great and continuous veins is enormous, an
sufficient to form the basis of successful minin
@ | industry for many years The ore Is very SOIL,
i mined with great facility, and with proper appl
/ | ances could be as cheaply crushed IA any IN tl
country IL is so soft indeed. that il could probabl
bo crushed better with rolls than stamps. but
. slammed. four To five tons to the stamp could b
4 crushed in a day. In manys Locations the mine ca
A be worked by open cut. Here no hmbcring Will b
f necessary and the cost of mining and milling shout
G not exceed So per ton 1t is evident. however, tina
= the ore cannot be most probably worked at th
G mines The supply of water there Is small. and tn
II best results will be- obtained by combining tn
n properties. putting up large mills at the Jorda
# and Transporting the ore there 10y railroad. an
working large quantities of II. BY pursuing tn
course profit Of more than So TO the ton may ca
lily be secured. and thus the gold production
- Bingham may become AS great and as profitable z
. that of the Black Hills.