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  3. Mineral Resource Data System (MRDS)

Jorgensen Prospect

Occurrence in Alaska, United States with commodities Gold, Lead, Tungsten
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10001996
MRDS ID A012840
Record type Site
Current site name Jorgensen Prospect
Alternate or previous names Borasco Claim, Eureka Claim
Related records 10112150

Geographic coordinates

Geographic coordinates: -165.42216, 64.58456 (WGS84)
Relative position HEAD OF MARY GULCH; W SIDE OF BONANZA HILL

Site location context

Political divisions (FIPS codes)

Nome(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nome C-1(quadrangle 1:63,360 scale)

Solomon NW(quadrangle 1:100,000 scale)

Nome(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Nome(hydrologic unit)

Norton Sound(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-247, LOC. 8; AK-KX-52-134. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Gold Primary
Lead Secondary
Tungsten Critical Secondary

Comments on the commodity information

  • MOST AU IN SULFIDES (PYRITE AND/OR ARSENOPYRITE)

Materials information

Materials Type of material
Galena Ore
Gold Ore
Scheelite Ore
Oligoclase Gangue
Pyrite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Marble

Nearby scientific data

(1) -165.42216, 64.58456
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Fault: N 65 Degrees W, Stee[ Ne Dip.

Controls for ore emplacement

  • Fault: N 65 Degrees W, Steep Ne Dip.

Comments on the geologic information

  • STRIKE AND DIP OF COUNTRY ROCK: N, 28 DEGREES E; JOINTS: N 30 DEGREES E, 70 DEGREES NW; QUARTZ VEINS: N 60 DEGREES E, 90.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1916

Comments on development

  • 2 LODE CLAIMS STAKED, 1916.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit QUARTZ VEINS AND IRON-STAINED SCHIST CUT BY 1 FT WIDE FAULT ZONE; SCHIST IMPREGNATED WITH ARSENOPYRITE AND PYRITE, ESPECIALLY NEAR FAULT; AU OCCURS AS FREE GOLD AND IN SULFIDES; PYRITE, ARSENOPYRITE, AND GALENA OCCUR AS VEINLETS IN QUARTZ VEINS; SCHEELITE ALSO REPORTED IN QUARTZ VEINS.
Deposit ORE PARAGENESIS: 1) AURIF. QUARTZ-SCHEELITE VEINS, 2) POST-MIN MOVEMENT ALONG FAULT, 3) INTRODUCTION OF AU AND SULFIDES INTO FISSURES IN QUARTZ VEINS AND DISS. IN WALL ROCK. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1987 Leonard, Kenneth R. (Huber, Donald F.) U.S. Geological Survey
Editor 02-SEP-1994 Mosier, Dan U.S. Geological Survey PARSED OUT HOST ROCK AND ASSOCIATED ROCK TYPES, AGES, UNIT NAMES, AND UNIT AGES.

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.