Julian Creek Gold Mine
Yukon-Koyukuk, Alaska
62.2088°N 157.3747°W
Mine Overview
The Julian Creek Gold Mine is in Yukon-Koyukuk, Alaska. Historically the site has been part of the Aniak Mining District. The Julian Creek Gold Mine was closed at the time of data entry with no known plans to re-open. The ore mined is composed of gold, monazite and cinnabar. The mineralization at this location is from the Neogene period (23.03 to 2.58 million years ago) to the Quaternary period (2.58 million years ago to present).
Julian Creek Gold Mine In Yukon-Koyukuk, Alaska
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Owner Name and Address
Julian Creek Mining Company
Alaska- Type
- Owner-Operator
- Stake
- Majority
Commodities
Additional textual information about a site or mine.
- Commodity Type Importance
- Gold Metallic Primary
- Mercury Metallic Secondary
- Rare Earth Elements (REE) Metallic Secondary
- Tin Metallic Tertiary
Location Info
- Yukon-Koyukuk , Alaska County / State
- Continent Country State County
- North America The United States Alaska n/a
Workings
SURFACE: HYDRAULIC
Geology
PLACER GOLD IS IN CREEK GRAVEL. IT WAS PROBABLY DERIVED FROM GRANITE PORPHYRY AT HEAD OF CREEK. CONCENTRATES CONTAIN GOLD, CINNABAR, AND MONAZITE (CADY AND OTHERS, 1955; MILLER AND OTHERS, 1995).
TERTIARY-QUATERNARY
Rocks
Geological materials at the site.
- Class? 1st Order Name? 2nd Order Name? 3rd Order Name? 4th Order Name? Most Specific Name? Begin Time End Time Description?
- Associated Rock Plutonic Rock Granitoid Granite - Granite - - -
- Associated Rock Volcanic Rock (Aphanitic) Felsic Volcanic Rock Rhyolite - Rhyolite - - -
- Host Rock Kuskokwim Group Sedimentary Rock Clastic Sedimentary Rock Sandstone Sandstone - - -
- Host Rock Metamorphic Rock Metasedimentary Rock Slate - Slate - - -
- Host Rock Plutonic Rock Granitoid Granite - Granite - - -
- Host Rock Volcanic Rock (Aphanitic) Felsic Volcanic Rock Rhyolite - Rhyolite - - -
- Mineralization - - - - - Neogene Quaternary -
Exploration
STATUS IS INACTIVE
Production
Production information
- Production Year? Amount Mined? Material? Comment
- 1921 2985.93 grams Gold 400 yards processed; 96 troy ounces gold
- 1923 279.93 grams Gold 600 yards processed; 9 troy ounces gold
- 1931 14369.8 grams Gold 5,000 yards processed; 462 troy ounces gold
- 1946 2083.93 grams Gold 11 troy ounces silver; 67 troy ounces gold
- 1947 17760.08 grams Gold 571 troy ounces gold; 93 troy ounces silver
- 1949 5225.38 grams Gold 14,000 yards processed; 168 troy ounces gold; 27 troy ounces silver
- 1950 1088.62 grams Gold 10 troy ounces silver; 3,000 yards processed; 35 troy ounces gold
Notes
PRODUCTION ESTIMATED AT 23, 400 OZ. GOLD (BUNDTZEN AND OTHERS, 1985).
Reference
BUNDTZEN AND OTHERS, 1985
Reserve-resource
RESOURCES EXHAUSTED IN 1993, END OF PLACER MINING (SR 48).
Nearby Deposits
Other deposits in the same region.
-
West Of Julian Creek Silver Occurrence
- Arsenic commodity Site type Occurrence status
- Yukon-Koyukuk, Alaska
- 1.07 miles
-
Spruce Creek Gold Prospect
- Gold commodity Site type Prospect status
- Yukon-Koyukuk, Alaska
- Placer
- 1.14 miles
-
Michigan Creek Gold Prospect
- Gold commodity Site type Prospect status
- Yukon-Koyukuk, Alaska
- Placer
- 2.39 miles
Nearby Places
There are no places nearby
Nearby Mining Districts
- Aniak Mining District (0 miles away)
Footnotes
* 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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Deposit
MODEL NAME = PLACER STREAM
STREAM GRADIENT ABOUT 100 FEET PER MILE.