Crooked Creek Area
The Crooked Creek Area is in Flat, Alaska. Historically the site has been part of the Iditarod Mining District. The site was first discovered in 1910. The Crooked Creek Area was closed at the time of data entry with no known plans to re-open. Production size when active was considered to be small. The ore mined is composed of cassiterite, gold and scheelite with waste material consisting primarily of garnet, magnetite and pyrite. Associated rock in this area is rhyolite from the Pliocene epoch 5.33 to 2.58 million years ago.
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A PRODUCTIVE PLACER AREA OF APPROXIMATELY 25 SQ MI.; INCLUDES MINOR TRUBUTARIES OF DONLIN & CROOKED CREEKS; AREA OF INTEREST GENERALLY NE SOUTHEAST OF GIVEN LOCATION LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2, 500, 000 SCALE OWNERSHIP STATUS MAP (1991 ).; INFO FROM LAND. ST :49.
Formal or informal mining district names.
WORK ALMOST CONTINUOUSLY FROM 1910 TO 1956.
HYDRAULICKING MOST PRODUCTIVE RECOVERY METHOD IN THIS AREA.
GOLD MAY HAVE BEEN DERIVED FROM CONTACT ZONES AROUND INTRUSIVE BODIES (IN BRECCIA ZONES ); INTERBEDDED GRAYWACKE & SHALE INTRUDED BY ALBITE RHYOLITE DOMES TRENDING NW BETWEEN GULCHES; GOLD LODES ABOUT 1 MILE SE-NE OF GIVEN LOCATION, MOST LIKELY SOURCE.
Geological materials at the site.
Other deposits in the same region.
Otter Creek Prospect
Minnie Gulch Gold-Mercury Occurrence
Black Creek Gold Mine
Glen Gulch Mercury Occurrence
Otter Creek Mine
Black Creek Gold Mine
Black Creek Occurrence
Glen Gulch Placer
* 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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HIGHEST PRODUCTION FROM SNOW GULCH BENCH PLACERS.