The deposits of Hudson Bey mountain occur in six

isolated areas which are dis

SCuUSSCC

Southwestern slope, Glacicr

gan creek, Simpson

ereck, Southeastern slope, and Northern veak.

SQUTHWESTERN SLOPE OF HUDSON BAY MOUNTAIN. Most of the deposits

ne ee

on the southwestern slope of Hudson Bay mountain belonz
most common type; that is, they occur in vertical or nearly
vertical fractures that strike northeast toward she peak of the

mountain. Most of them show some replacement of the wall-rock

and in some places the altered rock may be classed as ore. The

deposits range in length up to nearly 3,700 fect anc in width to

8 or 10 feet, but in the main they are fairly short and narrow.
They generally are widest in the central vart and tend to pinch

LQ

out toward both ends. Development work suggests that with depth

the deposits become narrower and in general poorer. The ;

Henderson vein was mined along a length of 1,100 feet for a

maximum depth of 600 feet. The Mamic vein for 680 feces out of

a total of 3,700 feet probably averages 4 to 6 feet wide. In

general the longest are also the widest

The Henderson (Duthie) vein is very high in silver,

has very important quantities of lead and zinc, and is Low in

gold. The Mamie is high in gold, high in zine, and relatively

low in silver. The Victory is mainly high in silver, lead, and

zinc, and moderately high in gold. The Coronado is high in

silver, gold, lead, and zinc. Other veins in this section carry

approximately the same mineral content. Copper occurs in places

in small amounts. There are certain important groupings of

constituents: silver is high with tetrahedrite (freibergite),

is moderate to high with galena, and low with zine blende; gold

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caile dk |
s . ese LN ' aati - ant wple for :
occurs mainly with arsenopyrite. There is no apparent ruie for Hy