Rogue River courier. (Grants Pass, Or.) 1886-1927, 1909-11-12
CHARACTER OF ORES WHICH
MAKE UP THE DISTRICT
SOME VERY RICH MINES
The Development Work ON u Num-
ber Of the Properties Is
Discussed.

Galice owes its rich mineral veins,
in large measure, to a belt of di- !
orite that was intruded between the !
slate contact east of the Big Yank |
zone and the granite west of the
Chieftain zone. The dlorite is in
many places porphyritic, though
rarely to any considerable depth,
and at others 1t has altered In char
acter so that its determination Is
difficult. Pyroxene and the rocks
collectively known as greenstones,
all intrusives, are also found In the
belt.
To the south, near the head OF
Taylor creek, the slate and GRANTEES
rapidly merge together, but through
the major portion of the Gaice dis
trict the intrusive belt between has
an approximate width of two miles,
Its probable greatest width is on
line almost due east from the sum-
NIT of Mt. Peavlne, indicating that
the mineralzed area comprises an
enormous lens with Its main axis
north and south.
Eruptive rocks are scarce. Ande-
site and some trap rock are found
on the higher elevations, notably on
Mt. Peavine, on the divide between
Galice and Silver creeks and on the
high ridges followed by the Bear
camp trail, but the volanic sheet
has nearly all been lost by erosion,
leaving only few scattered patches
as evidence Of It's existence.
II Is the intrusive dorite and It's
veins that possess an economic inter
est In the Galice district for the pros
pector, the miner and the capitalist.
The contact zones--the Big Yank
and the Chieftain--are sufficiently
prominent TO warrant the attention
they are today receiving. In the
two miles between them the dlorte
has been in places extensively folded,
crushed and fissured, and In these
fractures veins Of varying width
have been formed from the cIrcuIat-
ing magmatc waters. These veins
; have been enriched by the deposition
OF gold and silver carried by the
, waters. Tellurides, copper and ga.
/, lena are found In some OF the veins
: and iron is n common constituent OF
\ all OF them. The Sugar Pine, Gold
r en- Wedge. 0riole and Robertson
o mines cover veins OF this character
e II Is doubtless true, as many observ
a ant miners OF Galce believe, that
+ these veins are genetlcally connected
r with either the Chieftaln or Bill
Yank zones and owe their origin /,
n one or the other.
g Oxidation extends TO considerable
d depth at some points, while at other
sulphuret veins reach the surface, y,
that no rule ls common to all part
OF the district. In the porphyrltl
n areas the gold Is usually free. an,
n this Is often the case, also. where tn
IA alteration OF an original rock ha
il proceeded to some extent, but Will
l. few exceptions the ore becomes bas
q at depth OF 100 feet or less.
b The most prominent exception h
n this Ia the Sugar Pine. Az n vertica
W depth OF 500 feet It's ores are still
v partly free and they will probabl
,e continue to yield free gold until IN
IA level OF Quartz creek II passed. !
II this proves true. II will give an AZ
4. proxlmate depth OF over 1000 fec
,e TO the free gold on this ledge.
4. The extensive development OF IN
,e Sugar Pine gives good genert
RI idea Of the size and persistency q
M It's ore body. Three adIt levels pen'
I'd trate the mountain, the two low,
re- ones being respectively 600 and "a
n. feet In length and both following n
vein from which 80 much good o
has been taken. Third level
70 140 feet below the second and II
TO In this block OF ground, where sto
Ing ls now in progress, that hlg
i,o grade ore Ia being sacked for sh
seu ment. ON the second level oy'
hand Stopping is being carried on