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  3. Mineral Resource Data System (MRDS)

Snyder Falls Creek

Occurrence in Alaska, United States with commodity Copper
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Mineral occurrence model information
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10307379
Record type Site
Current site name Snyder Falls Creek

Geographic coordinates

Geographic coordinates: -145.5835, 60.6436 (WGS84)
Relative position Site is at an elevation of about 2000 feet near the head of Snyder Falls Creek. It is in the NE1/4 sec. 21, T. 14 S., R. 2 W., of the Copper River Meridian. Location of site is accurate to within 1000 ft. Location is the same as site C-24 of Jansons and others (1984).

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cordova C-5(quadrangle 1:63,360 scale)

Cordova NW(quadrangle 1:100,000 scale)

Cordova C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Eastern Prince William Sound(hydrologic unit)

Prince William Sound(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Chugach National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore
Pyrrhotite Ore
Quartz Gangue

Mineral occurrence model information

Model code 90
USGS model code 24a
Deposit model name Massive sulfide, Cyprus
Mark3 model number 11

Nearby scientific data

(1) -145.5835, 60.6436
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = This occurrence consists of small veinlets of chalcopyrite and of disseminated pyrite and pyrrhotite in greenstone 'pods' in sedimentary rocks of the Orca Group (Jansons and others, 1984; Nelson and others, 1985). These pods probably represent localized mafic flows or structurally disrupted flows. Ten grab samples analyzed from the area contained from 29 ppm to 3.35% Cu (Jansons, 1984).
  • Age = Probably Tertiary based on the age of the host rocks.

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Copper River

Comments on the workings information

  • Workings / Exploration = Site was visited as part of a regional mineral assessment of the Chugach National Forest (Nelson and others, 1984; 1985; Jansons and others, 1984). Ten grab samples analyzed from the area contained from 29 ppm to 3.35% Cu (Jansons, 1984).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Jansons and others, 1984

General comments

Subject category Comment text
Deposit Model Name = Cyprus massive sulfide (Cox and Singer, 1986; model 24a)
Deposit Other Comments = Chugach Alaska Corporation, Anchorage, Alaska has control of these lands.

Reporter information

Type Date Name Affiliation Comment
Reporter 10-JUN-00 S.W. Nelson U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.