The Whalen Shaft is near Medfra, Alaska. Historically the site has been part of the Mcrath Mining District. The Whalen Shaft was closed at the time of data entry with no known plans to re-open. The ore mined is composed of silver, malachite and allanite with waste material consisting primarily of tremolite, zircon and pyroxene. The host rock in this area is limestone.
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THE WHALEN SHAFT WAS DRIVEN TO AN UNKNOWN DEPTH, BUT NOT BELOW THE WATER TABLE, WHICH WAS AT ABOUT 400 FEET.
THE WHALEN SHAFT IS MAINLY A TACTITE WITH GOLD-POLYMETALLIC MINERAL VALUES. ORE FROM TACTITE CONTAINED THE FOLLOWING: 25 PERCENT BIOTITE; 10 PERCENT PYROXENE; 10 PERCENT TREMOLITE; 10 PERCENT CARBONATE; AND 10 PERCENT MALACHITE (HERREID, 1966 ). THE TACTITIE ZONE AVERAGED: 1. 24 OUNCES/TON GOLD, 2. 9 OUNCES/TON SILVER, 1. 11 PERCENT COPPER, AND 0. 05 PERCENT BISMUTH (HERREID, 1966 ). AGE OF MINERALIZATION IS UNKNOWN, BUT PROBABLY RELATED TO THE 68. 0 MA NIXON FORK MONZONITE PLUTON (BUNDTZEN AND MILLER, 1997).
STATUS IS INACTIVE
Other deposits in the same region.
Birch-Holmes Gulch Ridge Uranium Prospect
Birch Gulch Gold Mine
Holmes Gulch Mine
Whalen Copper Mine
Discovery On Whistling Gulch Gold Mine
Hidden Creek Lode
Uranium Discovery Uranium Prospect
Encio Gulch Mine
Riddle Gulch Gold Mine
Nixon Fork Mine And Mill
* Mine bounds on map indicate the general area that a mine occupies. For an detailed map, refer to the overseeing BLM field office.
** The mine central point is based on an average of the mine's bounding box(es) and does not necessarily fall on the claim itself.
1 World-class significance is determined by total endowment of the contained commodity. This includes all past production and remaining reserves. Each commodity is considered separately and commodities cannot be combined to arrive at a significant size. The tonnage thresholds are from the mine model grade-tonnage studies. As of June 2008, many entries were classified as significant under less strict rules.
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MODEL NAME = COPPER-GOLD SKARN (COX AND SINGER, 1986; MODEL 18B).
SEE NIXON FORK MINE (MD062)