Tonopah daily bonanza. [volume] (Tonopah, Nev.) 1906-1929, 1909-10-10
PROF.. JENNEY'S REPORT IN FULL.

in FULL.
| liar earIy-formed fault fissure filled
with volcanic mud, which cuts
through all the igneous flows and
outcrops at the surface, from the Bel
mont mine west to beyond the Mid
way. 1t is known as the Mizpah dixie
Cor FAULT, and while in itself not
! ore-bearing, has influenced the depo-
sition of the ore bodies along it's
course. In the deeper levels of the
mines there are evidences that the
upwelling waters, which formed the
GRE, in some instances came up
through assures and channels along
side the dixie.
THE ORE DEPOSITS.
The reformation may be de-
scribed as broad belt of assure
veins, often closely spaced, travers-
| ing the district in a general east and
west course The extent of this min
J eral belt is undetermined; continu-
GUS Slopes and connected levels reach
from the Belmont mine, westerly
through the Tonopah, Jim Butler,
Montana, Midway, MacNamara, West
| End and Tonopah Extension mines.
The Belmont is following the ore
easterly beneath Mount Oddie; the
Tonopah Extension is exploring the
belt to the west towards the Mckane
property, and in depth to the north,
in the direction of the Golden An
Choir. With present development,
ore-deposits are opened along the
course of the belt for nearly a mile,
and are distributed over a breadth,
north and south, of 1000 feet. The
veins vary widely in width and often
subdivide into branch veins, which
not infrequently equal in size the
original assure. The great output of
*The Chemistry of Ore Deposition, by w.
| p. Jenney. Transactions American Institut
of Mining Engineers, Vol. kXXIII, p. 473.
the camp is drawn from slopes aver
aging TO feet in width; where the
ore is high-grade, even the smaller
veins are worked at a profit In the
Belmont, Tonopah and Tonopah Ex-
| tension properties some of the fis-
sures are of great size, with ore-bod-
les Is to 35 feet in breadth, meas
ured at right angles to the walls.
The ores are largely quartz, carry
ing silver glance (argentite), ruby
silver (pyrargyrite), and the socalled
brittle silver" (polybasite, etc. to-
gether with chalcopyrite and other
sulphides bearing, gold and silver.
The ratio of silver to gold in the ores
is quite uniform throughout the dis
trict, being 90 to 100 ounces of sill
yer to one ounce of gold; in the bull
lion produced, about one-third the
value is gold. The grade of the ore
as sent to the mills ranges in assay
value from $12 to $50 per ton.
The Tonopah ores resemble in min
eral character and in the ratio of
| gold to silver the ores of the Com
stock. 1t is also noteworthy that in
certain mines, particularly the West
End, the ore-deposits occur largely
in the country rock. exterior to the
assures through which they were
formed-in places reaching out so
feet or more beyond the assure walls,
a type of deposit characteristic of the
| Comstock lode
THE GOLDEN ANCHOR PROP
ERTY.
At this date October, 1909 the
Tonopah Merger Mining Co owns the
Salutation. Limerick, Limerick No. .,
Sky, Sky No. and Sky No. 3, lode
mining claims and fractions. and
also the Golden Anchor property,
embracing the Golden Anchor, Trip
let and Black Mascot patented claims.
The Golden Anchor shaft Is sunk TO