The Goldfield news. [volume] (Goldfield, Nev.) 1904-1911, 1906-11-24
GEOLOGY

The prevailing country rock in the territory controlled by the company is
ldacte al eruptNe porphyry. This is the productive formation of the Godfeld dis
volcanic activity AM from a points somewhere in the vicinity of this property. The
volcano was trmiue in Eruption. and thereby ave to the extruded rocks a
rudely bedded structure but such structure has n o relation to edimentatio a re-
cent popular fanacy. he rock magma elected Eo varied somewha from time to
time ranging in character from andeatet the more snfceous classes such as
rhyoHe. In this particular section. some of the later rocks of the period of r-
phyy erupuons. remnnts of which now show in the mesas to the south OF the
district have been eroded ava exhibiting thereby porphyres which wereo once
buried under 1000 feet or more OF lavas. These rocks have beer brecdated and
assured by the shock of succeeding ant repeated eruption alongt the hnesn now oc-
cuped BY the ore bodies which are being mined
1t may be concluded upon Biological data from surrounding areas thai the
more recent volcanic series of rocks last described underaidb by another volcanic
Formations of much greater age, which was hnruded int stl older formations of
various origin. These we're eroded and alter buried by the productive porphyries
The variety o volcanic rocks their intense regional brecciahoni indicates
for a treat period of geological time 10 far as low appears from the mine work
hgs Of the district the territory Of isc mpa ad it's immediate vicinity ws
the focus of the most intense OF such action in the period mediate preceding the
important epoch of ore deposition whit the result that IN intricate seres of in
themselves incidents to hssurhng Thesee extensive assures Ind their related shat
tered rock massesh have served as deal avenue for the circulation Of orebeanng
solutions and as exceptionally xtensive receptacles for their precipitation
The oe-bodhs are in the nature OF both a filling I'M a replacement in the
brecciab bodies and along the assures connectingt them. Bonanza bodies are formed
within the oe-bodies along the many intersections of the network OF assures with
porphyry.
In III Mohawk No 2 the bonanza ores haveb been found continuously from the
south end1ne norhwardf for a distance of nearly 500 feet aong the claim ant
complete development promises to how theirc connection with similar bodies re-
pear that the series of remarkably rich ore bodies in he Combination, anuar
Combination Fraction, Mohawk Jumbo and Red Top will soon be definitely cor
as n ariculated system of veins due to the same causes me together form
ing a vein system.
lions within greater masses of quartz deposits which ans from a few feet to
more than 100 feetin width, commonly caIed hedges" Millions of cubic feet of
such material hav been deveopedi in the brecia zones which everywhere contan
gold values Such bodies ARE e veins OF Goldhe1d and. when the company milling
is fully instituted, a great portion of these masses will be m1ed to good profit
such is heir extent that a upp of mill ore is assured for a period IF many
years., after the rich ores have beef extracted