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  3. Mineral Resource Data System (MRDS)

Accident

Occurrence in Alaska, United States with commodities Gold, Lead, Zinc
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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. Alteration
  8. Mineral occurrence model information
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10000675
MRDS ID A011299
Record type Site
Current site name Accident

Geographic coordinates

Geographic coordinates: -147.28026, 63.18963 (WGS84)
Relative position This occurrence is at an elevation of about 4,800 feet, just west of the summit of Gold Hill between Lucky Gulch and White Creek. The map site is on the boundary of secs. 7 and 18, T. 20 S., R. 3 E., of the Fairbanks Meridian. The location is shown as site 18a in Smith (1981). This position is accurate to within 200 feet.

Site location context

Political divisions (FIPS codes)

Matanuska-Susitna(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Healy A-1(quadrangle 1:63,360 scale)

Mount Hayes SW(quadrangle 1:100,000 scale)

Healy(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Susitna River(hydrologic unit)

Susitna River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

BLM(Federal land areas administered by BLM)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Lead Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Galena Ore
Gold Ore
Pyrite Ore
Sphalerite Ore
Quartz Gangue
Sericite Gangue

Alteration

  • (Local) Quartz, sericite, and pyrite alteration of host phyllite and small silicic dike.

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Nearby scientific data

(1) -147.28026, 63.18963
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Accident prospect explores one of several mineral deposits in a belt south of Valdez Creek. The Valdez Creek area is underlain by pre-Upper Triassic pelitic clastic rocks, minor tuff, limestone lenses, and conglomerate. The rocks apparently vary abruptly in regional metamorphosed grade, from prehnite-pumpellyite through greenschist and amphibolite, to granulite. These rocks are intruded by Upper Jurassic alkali gabbro and by dioritic intrusions of Late Cretaceous and Early Tertiary age (Smith, 1981).? the bedding and foliation of the strata strike about N 75 E and dip steeply northwest. Strike-slip faults having a similar orientation are also present, particularly on the south side of Valdez Creek (Smith, 1981). On the north side of the creek, a northwest-dipping thrust fault in part explains an apparent 'telescoping' of the metamorphic rocks.? the Accident occurrence consists of a quartz vein on the same lode system(?) as the Yellowhorn prospect (HE208). Decomposed slates are intruded by siliceous, fine-grained leucocratic rock containing abundant pyrite. The gold vein contains galena and sphalerite.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Valdez Creek

Comments on the workings information

  • Workings / Exploration = Surface sampling and trenching.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Ross, 1933

General comments

Subject category Comment text
Deposit Model Name = Low-sulfide Au-quartz vein (Cox and Singer, 1986; model 36a)
Deposit Other Comments = A rocker set up in a gulch 300 to 400 feet above Accident lode was reported to have obtained good gold values from stream gravel.

Reporter information

Type Date Name Affiliation Comment
Reporter 07-APR-2000 D.L. Stevens Stevens Exploration Management Corporation

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.