The Weiser signal. [volume] (Weiser, Idaho) 1890-1904, 1900-03-22

can be traced for short distances on |
ly in the vicinity of some of the lead
ing mines, entirely disappear farther
on, and again crop up beyond. These
facts. in connection with the charac
ter of the gangue, lead us to say that
the naturalization of the veins in this
region occurs in lines parallel with
the granite contact, or i'll series OF
parallel veins, with occasional cross
veins, and that these veins have
been formed at different times and
by different agencies. There are
two distinct series of veins in the
schist-those parallel with the gran
lite contact. and those interstratified
with the schist. The latter are al
ways composed of white quartz, are
of varying thickness, rarely over four
feet, are as crooked as rams horns,
and faulted in ALI sorts of ways They
occasionally carry gold in rich peck
cts of small size, and are probably
, simply cases of infiltration. They
never have any porphyry with them,
but often have considerable micacious
iron. The North Star. at the head
| of Rapid river. is one of these mines.
The schist veins parallel with the
granite can be found for several
t miles out in the schist and parallel
with the contact, and probably exist
e all through the schist, but cannot be
1 traced much beyond the Snake be-
cause of the continuous basaltlc cap
there. The Vaughn is one of these
: mines, and has a great outcrop OF
2 iron-quartz gangue in connection with
f large porphyry outcrop. The River
t Queen is on another vein parallel
: with and north and east of the
4 Vaughn. but has little iron and no
f porphyry as yet, though it will be
e found eventually. Both of these are
: copper sulphide veins, with quartz Oh
e iron-quartz gangue, and both are iso-
4 lated ore chutes. There are a num-
5 Der of other similar outcrops west OF
5 Ruthberg and Cuprum.
It At Ruthberg are three distinct Sc
S ries of veins of different mineraliza
a ton. They are ron-quartz coppel
1t veins in schist, silver-lead- jron-man
t, ganese-quartz veins in quartz porphy
L ~, and garnet-copper-iron veins il
lie granite. The schist veins are lik
1T those mentioned above. and. so Tar
id nothing has been done with them
n They lie near the river. The quartz
Up porphvry veins are large and az
he more continuous than any others
ne The area of these veins is large. bu
ne it also runs east of north, is Gale
It. "quartzite" locally, and is embrace
wv in a region half mile wide
Sc There are several parallel veins
I'd Ruthberg is nearly in the center
tn this area. Years ago much wor
st. was done on these veins, and a mi
% was erected for treating the ores
ed but the presence of manganese mad
of the attempt failure. So far littl
"a lead has been found, though som
nd high grade galena has recently bee
nd opened in the Allison Houlahan mine
as The manganese has been too muc
VS. mixed with iron and quartz to
* of value. The garnet granite ven
he lie practically on the crest OF u
ed granite. and near the crest OF I'll
ist range. They are characterized
nd heavy outcrops of brown or yello
ew garnet chutes carrying iron, cope
av and some gold and silver. There a
,v several parallel series of chutes al
st. number of apparent cross veins. II
of principal outcrops are the Queen al
yer the Railroad mine. The former is
granite. and the latter in lime a.
al granite. There is no well defin
use porphyry in any of the granite ven
Ike but there is much decomposed a
lif- altered granite, some of it approac
We ing yellow porphyry. Among t
asst cross veins are the Sunday group, t
ced latter entirely unopened.
sly; On the eastern side of Cud