The evening herald. [volume] (Albuquerque, New Mexico) 1914-1922, 1915-05-07
lny D. 4. slal.. MInInr EneIncerl

ADN ~ ~ TtHtt4 NautuB EtaNteNtl
Magdalena. sooorro county, New
Mexico, IL situated on tho west slope
OF the Magdalena RANGE. A spur Of
the santa ne railroad connects Il with
It's main line 1T socorro, y. NJ, some
20. miles distant. The elevation "
$500 feet above sea level. The en-
trance % the known mines IL about
1000 feet higher and Is convenient
~ accessible by wagon road. Kelly,
the principal camp Of the district, IN
three miles distant from Magdalena.
A daily stage comets the two points
The Magdalena mountains run In a
northeriy and %southerly direction
from Kelly. The base OF the mount
aim consists OF q close-grained. very
compact schist. greenish In color. call
cd By the miners groenstone. This
rock forms the base OF the western
flank Of the mountain "a north
n south OF town. II dips 80 degrees
to the west and forms the floor OF the
ore bodies. There Is. however, no
sharp division line between the bot
tom bed OF the crystalline limestone
and the schist: in many places they
merge into each other. Ia some iso-
lated instances there is a thin bed Of
copper-bearing pyrite ore resting di-
rectly upon the greensboro and be-
tween Il and the everything crystalline
limestone. This crystalline limestone
IN divided into an upper aud lower
series by a distinct thin beddcd lime.
about eight feet thick. called the sill
yer pipe lime. Ovarlying che upper
crystalline limestone alternating beds
Of shale and quartzite occur. ending
with a thln Bcd Of lime which ~ min
eralized In places. This brings W to
a thick bed Of carboniferous shale.
about 500 feet thick, on top OF which
rests some impure earthly Limestone
with another zone Of naturalization.
The ore here is generally low grade
uxidizod ore. This briags us TO the
intrusive oruptiye which forms the
western boundary of the present
known ore deposits. This cruptive Is
n compact granite porphry called
rhyolite by The miners.
Eharo Is "A series OF north-south and
east-west faults cutting the limestone
beds into irregular blocks. In exam
inils the northsouth faults 81 will be
found that IN every instance they ate
caused and filled by eruptive bikes. In
many places the ore bodies are con
inuou between " or more parallel
fauitins bikes. From all observations
II is safe 10 say that these bikes are
prior To the naturalization and that
tho main uplift 81 tho mountain range
occurred simultaneously with them.
ore Occurrence.
Tho ore occurs ia the following or
der:
ca The contact COppcr-hearing
material tbetweon the greensboro and
the crystalline llmestonel.
co The silycr-pipe vein zone Om-
mcdiatcly below the silver pipe lime
stonel. IN this zone the ore often
runs from one cruptivc north-south
dixie Ia another parallel dixie hundreds
OF feet distant.
go The so-callod east veip (%usual-
Is between the heavy bed of carbon
ferrous shalc and upper layer Of crys-
tailine limc).
ca \ slightly mineralized zone
In "a ncSle bed Of lime between the
shalc and "A coarse-ggained quartz.te.
co The coutnct vein In a shatter-
ed zone where tho oruptiye abuts
aEainst tho sedimentaties.
The ore bod e. are usually the lars-