Mohave County miner., 1893-05-13
Tho Cause Of ORE chsfss.

| gs Years, !, hAo P'oo'y 'ss"S os"oss
.,.,,ered over the peculiar dissri.
!. of ore in the limestone contact
II the Rocky Mountains, and
...s,.rly ~ exhibited at Lssdvills.
I, cdfr and other mining sections Of
do Why are the deposits In dis
.sa,e. or channels, and what
= ave these chutes the trends or
- ,hey has~9 These are questions
1 .ne, have occurred 70 every mining
l .od doub,le.s ~ere dismissed by
s.isisy without any solution to the
.,ss Certainly these questions In
II 3, ,hrm.eIv-s upop the mind Of the
!. :, hao.ireds oi times before an ap-
ii, satisfactory answer vas evolved.
examining ore chn'es occupying
,e,~een blue aud brown lime, or
smss,one and shAie or porphyry,
IA bs noticed that while the ore
- sssmIngly occupy troughs OF
-. "a 10. oedding rock, there are
smr,,l,ns or waves Ia the Tor
nat arbitrary requirements Of
..r.tu,,s. TIE hanging wall or cap
,.o.oly regular, and does not con-
.ah the ocdding plane of the ore,
H., docs il separate or dlstend over
!. % As to have produced an open.
!. sn., VA. originally closed con-
Il ,od might thus have hcen thought
.,ss iac,lita,ed the creation OF an
saale.
,h.r f,atur. aoout ore chutes thai
a me to considerAh!e speculation
n they are insar,ab!v thicker Oh
a, Than the other in other words /:
sslIlns or thickest part oil the
!. nearer 10 one edge than tiie
u rha. At Robinson and other
k-lhAye iuuni that an easterly and
-dy ore chute, l5J feet long. would
q max,nnm thickness at y TO 80
ktgp the sDutnern edge, thinning
IA, TO the northwarj until II
sed out entirely.
.eoar-e oI ore chutes differ in diff
aisric.s. At LeAdvilie they have
~,.l northeast course, At Rico they
.pbe4.,. In all districts they are
a less parallel, that Is when a
considered relative 10 It's neigh"
lhoayh the same may not prevail
entire system, AS AZ LeAdSiiie
there are probably no less than
distinct ore ehutes or channels.
sor.hern portion Of this district
ase OF these channels is, ii any
rIa- south OF east. The great
yqs that trAverses the Morning
lad Mad oi Erin mines has a
nearly east and west AS a line
kdrasn, the Iron Hill ore chutes
course north about 500 east,
8rth-r southwark, the Rock Hill
.hox trend north, 70" east only.
Enard they would ali unite at no
tsant point. This, however, 10
dl probable.
4ieser tine theory As to the genesis
ae oitiie different mining districts,
sao question bnt that the ore was
esi from mineral charged waters,
iaud an opening and opportunity
salate ~ the contact plane. IL
sere originally no troughs or de-
as in the limestone il would seem
sconiact plane generally should
'en nineralized, instead OF chan'
lnt4ct whether the fios was ins
v gravity, bydros!atic pressure,
~ attraction or any other agency,
rities Tor mineralizing one portion
naisct plane were as good As for
p. Following on this line OF rcas-
and not wishing TO enter the
sonplex field OF speculation in
sthe agency of electric currents,
ssase ior the deposition OF 'be
'os itself. IL then occurred to me
lhe deposition OF the limestone
belts or zone. incorporated more
natter than others. What the
ashls were OF the paleozic sea, and
eM oi It's animal and vegetable
natter OF speculation. but it IL
'@gh to imagine aggregation o.
natter m lines conforming with
ssad How OF the tide, Or possibly
1sss've lowering, or alternate low
@ansing OF the sea. Such con
"as are now represented by ore