GENERAL SUMMARY. 
49 
dreds of feet of bed rock. There seems to be no indication that the gold lias been 
derived from any great "mother lode," and it has probably come from comparatively 
small veins distributed through the country rock. 
All of the creeks at present known to be gold bearing to a paving extent, except 
Slate and Ruby creeks, take their rise in the Minook-Baker-Troublesome divide 
Along this divide are dikes of monzonitic, dioritic, and arid igneous rocks, and it 
may be that these were associated with causes that introduced gold-bearing solutions 
into the rocks. The large mass of diabasic rocks in the Minook group may have 
been related in some way with the mineralization of that area. 
As to the origin of the silver and copper nuggets with the gold in the creeks of the 
Minook group, little can be said. On all the creeks in which they are found, except 
Slate Creek, both limestones and diabases occur. On Slate Creek diabase was not 
seen, although there is much of it on Ruby Creek. It is likely that the silver and 
copper nuggets come from the oxidation of contact minerals resulting from the dia- 
basic intrusions. 
The average depth of gravel worked is probably between 10 and 20 feet. The 
gravels are mostly frozen, but much trouble in working them is sometimes had on 
account of live water. Hydraulicking has been introduced and apparently works 
well in the frozen gravels. This form of mining will probably become of consider- 
able importance in the Minook Creek group wherever plenty of water and head are 
obtainable. In the Baker Creek group the expense of obtaining water for hydrau- 
licking seems to be very much greater, though data are lacking. There is much 
gravel in this group, which can probably be worked at a profit only by this method. 
In the Troublesome country there is plenty of water, with sufficient fall for hydrau- 
licking in that valley. 
The following tables give the most important statistical data of the Rampart region 
and include the total gold production, so far as ascertainable, up to the fall of 1904: 
Distances, men employed, and freight rates of Rampart region, 1904. 
Name of diggings. 
Distance 
from 
Rampart. 
Number 
of men 
em- 
ployed. 
Freight rates. - 
Winter. 
Summer. 
Minook Creek 
Miles. 
Cents -per 
pound. 
Cents per 
pound. 
Hunter Creek 
3 
4^ 
5 
6 
8 
9 
11 
28 
30 
15 
30 
10 
7 
2 
2 
2 
4 
tattle Minook ('reek 
4 
4 
4 
Itubv Creek 
10 
3 
4 
(■! 
6 
6 
6 
6 
6 
G 
6 
Slate Creek 
Eureka Creek 
Bench bars 
8 
15 
15 
Doric Creek 
jlenn Creek 
30 [] 
30 ' 2 1 
31 10 
15 
15 
15 
Seattle Creek 
Dmega Creek 
Thanksgiving Creek 
■n 
15 
32 
34 
2 » 
3 
10 
5 
15 
15 
Juail Creek 
15-20 
Total 
169 
Bull. 236--06- 
