Mohave County miner., 1891-12-19
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hs kinss and the Geological Formation
Thsrs0i
kIovILLE, LIScoLN Co., NEVADA,
December l4th, 1891.

RIovILLk, LINCOLN Co., NEVADA,
December l4th, 1891.
EDIToK MiSER:
Having Just returned home from trif
through the Weaver and Minnesota min.
ing districts, fancy some notes aud Oh.
servations Ou that region might be OF use
10 some Of your readers and hence here
offer The same for you to do with ~ you
think test:
There has been large amount of sur
face prospecting done in that region. II
the subdivision into twenty-scre lots by
the hundreds is anything to go by, and
there has evinently been high spprecia-
tion of claims, for there are now very few
lett within the mineralized zone that do
not carry string OF sppropriating mon
uments.
The kind of prospecting now needed
there is in the underground regions
among the ore deposits that await deyel-
opment AS my own affairs are OF no
public interest do not mention them,
but will offer some modest suggestions
that may be Of use or interest to some.
The mining laws are now 10 = fair state
OF completion aud should be studied and
rigidly observed by all locator. so that
each mans rights may be conserved and
much difficulty avoided.
II a man sticks up one hundred monu-
nen,s day about the size Of teapot on
every brown, green or mottled rock with
out knowing the claim to contain the
metals claimed, he In not keeping the
spirit or letter Of the law and giving no
fair chance 10 men who come afterwards,
and would help open up the resources OF
the region il finding encouragement.
liza prospector hnds valuable claim
and takes day to put up good and plain
monuments and notices that can be east
ly seen and understood no does much
better for himself and his country. liza
man makes a valid location and valid
record in evidence OF the same the laws
Of his country will help him hold his
rights; II he trespasses upon rights exist
ing before he came he is sowing thorns
and thistles in his own pathway and
trouble for the rest.
There are in these to districts four dis.
tinct classes Of ore deposits 80 far as now
known, which will briefly note:
The first zone in which the Weaver
and the George, old producers. are stu.
ated. and whole legion OF new locations
is belt Of ferruinous mica schists and
schsles in part chloritic, Of Archian
age, and in this belt there is mineralzed
bed OF rock some twenty feet thick up.
turned at various angles. and whenever
this layer or stratum Is tilted enough 10
make its former width nearly its present
depth the chloride films with which
1t is impregnated have collected into rich
seams and pockets Of ore which may be
in favored spots very large and yaIu.
able. This zone lies on the west flank Of !
the range and Is overlaid at its west and |
southwest end by eruptive masses Of ar.
Of paleazoic time, basic field
spars prevailing in the mass but gradu-
atiDg into the trachytic order Of dyke
rocks, The contact OF the two formations
il very promising for mineral deposits.
East Of this, over the central ridges. ia
4 belt Of camhrian gueissoid and grant.
old rocks containing large ledges Of red.
lish yellow quartz, gold bearing, With
small rich seams Of silver ore. These
quartz ledges are probably the source Of
he gold found in newer veins or frac.
lures around the Gold Bug region and the
ireen Bay camp which lat ter shows
igns Of collection by strong currents
Ifter period Of emergence or folding Of
Idjoining heights. Within these masses
4 auriferous rock secondary silicltica-
ion has occurred and produced seams or
'eins Of richer rock or ore.
Where these masses rest upon the old.
= bed rocks there will likely be some
cry rich deposits encountered by future
development work
These are the immediate reliance o
he present mills and mining companies.
farther west along the road to FL Dorado
,anyon there is another zone or belt
long the northern sntichinal side of
idse Of blackened trochyte, highly silic.
ous. An elvan dixie (often called quartz
'orphry) adjoins the trachyte mass and
0 this ridge of eruptjye and Fin the elva, :