Albuquerque evening herald. [volume] (Albuquerque, New Mexico) 1911-1914, 1913-01-22
Survey Of Important Western
Zinc District--Formation Of
the Ores and Their Charact-
er--History Of Production
and Milling Enterprises
Excellent Prospects.
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NaRuaionA. SocoFfo county. NeW
aiexlco. Il situated on the west uionn
Of the Maedalcna ranEe A sntsr or
the sahta Fe railroad connects "a with
lts main line at SocoFfe. n. ~. some
1e miles distant The elevation Ia
$500 feet above sea level The IN.
trance 10 the known mines are-about
l.oeo feet higher and are convenient
u accessible b. Wagon road. Kelly,
tho pfinclpal camp OF the district. il
three miles distant from Magdslena.
A daily stage connects the two noinfs.
The MazdaicDa mountains run IN
northerly and s0utherly direction
from Kelly. The base of the mount
AIN consists 81 q close grained. very
compact schist. Ereenish In color. call
ed by the miners Erecnstene. This
rock forms the base OF the western
'hank % the mountain ruuEo north
and south Of town. IA dips 10 degrees
% the west and forms the floor 90 the
ore bodies There d. however. no
sharp division line between the bot
tom bed OF the crystalline limestone
and the schist In many places they
ncrae into each other In some lao-
lated instances there h y thin bed OF
eopper-bearing pyrite ore resting al
rcctly upon tina greensboro and be-
tween a and the everything crystalline
limestone. This crystalline limestone
Us divided into an upper and lower
~.
about eight feet thick. called tho sill
yer pipe lime. Overlyng the upper
crystalline limestone alternating beds
81 shalc and amnrtzitc occur, ending
with a thin bed 1T lime which h. min
eralized In places. This brings us a.
n thick bed % carbonifcrous shale.
about 400 feet thick on top OF which
rests some impure earthly limestone
with another zone % naturalization
Tho ore here Is generally low grade
oxidized ore. This brings us 20 the
Intrusive eruptive which forms the
western boundary Of the present
known ore deposits. This eruptivc 1,
compact granite porphry called
rhyolitc by the miners
There is y series of north south and
easi-west faults cutting the limestone
beds into Irregular blocks. In exam
lning the north-south faults Il will b
found that In every instance they arr
caused and flied by eruptive bikes. In
many places tho ore bodies are con.
tinuous between two or more parable
fatiltina dskes From an observation
Il Is safe 10 say that these bikes are
prior 10 the naturalization and tina
the main uplift Of the mountain range
occurred simultaneously with them.
Ore OccurrenCc.
The ore occurs In the following or
der.
Ci) The contact copper bonrini
material Cbotween the greensboro an,
the crystalline iimestone).
CD The sliver~pipe vein zone Gin
mediately below the silver pipe lime
stonel In this zone the ore nftci
runs from one eruptlve north-Eoutl
dixie 10 another parallel dixie hundred
OF feet distant.
(3) The so-called east vein (usual
! o. between the heavy bed of carbon
ferrous shale and upper layer Of crys
taiiine iime)
60 A slightly mincralized zon
| In hckle bed Of lime between M
shalc and coarso-g grained quartzlte
CD The contact vein IN a shattere'
zone where the eruptive ebuts agains
the scdimentarics.
The ore bodies are usually the larg