The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1913-10-09

dard Mammoth mine. $3.50 feet ut the
Morning mine, and over 5000 feet a.
the Hercules mine.
Types Of Naturalization.
In my Wardner paper. already cited.
I have described IS faults distributed
among systems and have discrimin-
ated IL types of naturalization. do
not recognize any important minerali-
zation as connected with the first, the
third, fifth and sixth systems l find
first a disseminated siderite of an ear
ly but rather indefinite age. After that
| place some deposits that may be of
contact metamorphic character. The
first zinc-lead naturalization Is dis
semination in quartzite and is corsid-
cred older than the second fault sys-
tenn. II reaches an altitude OF 1000
feet, but has not been much explored
underground. The Sullivan dissanin-
ated pyrite and Phil Sheridan siderite
and pyrite are connected with the Sec
ond system of faults. The Blue Bird,
Buckeye and Ontario types represent
a single stage of ore deposition con-
nected with the fourth fault system.
The Jersey type Is connected with the
seventh system. The Alhamora and
Bunker Hill types represent third
important stage of ore deposition due
to the eighth fault system. Finally
connect the Jackass type with the
ninth system. l have recently learn
ed there is. locally associated with
, another of the great faults OF the
ninth system, an ore consisting OF
quartz, galena. sphalerite, pyrite and
calcite. The presence of considerable
| calcite and the tendency to develop
much pyromorphite in the zone OF
oxidation, set this deposit apart,
mineralogically, from all others in the
! Wardner district, though there are
some features about it that lead me
to place it tentatively in the Jackass
type. These various types are clearly
distributed without any reference 70
altitude and as they all occur in
quartzites, they show little change due
/ to rock formation. Their differences
are mainly due to their having been
deposited at different periods of time
when conditions of heat, pressure, and
! source Of material differed The point
: | am trying to make is that in the
Occur d'Alene district, range of al
titude of 5000 or 1000 feet has scarcely
any noticeable effect on the character
of the deposits except such as may be
traced to the influence of different
formations. The Prichard type owes
| its characteristics solely to its en-
vironment
Distribution of Zinc Lead Deposits.
There is very unequal distribution
of zinc-lead deposits in the Prichard
| formation. Practically all the mines
and the vast majority of prospects
occur in the upper portion Of the for
nation. The deposits that may be said
| to have some promise are generally
di tributed near the borders of the
| large Prichard areas, though the zone
of prospects extends farther in. while
the central portions of the areas are
notably barren. 1t appears in the
Occur d'Alene district that these
deeper portions of the formation are
characterized by gold and copper pros
poets rather than lead and zinc. / re-
fer particularly to the Murray region
and to the Elk Creek district near
Kellogg. 1t may, however, be fact
with no genetic significance. But If
one spends much time examining
prospects and mines in northern Idaho
and western Montana, the conviction
will grow in his mind that If he finds
in Prichard areas a deposit of any
promise 1t Is almost certain to be in
the upper 1000 feet of the formation.
This leads me to think that the min
erals, if diffused in the Prichard, were
largely confined to the upper portion
of the formation.
Relations of the Deposits to Faults.
The question will be asked why the
known ore deposits are absent from
large areas Of the Occur d'Alene and
neighboring regions, if derived from
Inn on Da