1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Ophir Prospect

Occurrence in Alaska, United States with commodity Gold
Map
XML
JSON
KML
C

Geologic information

Identification information

Deposit ID 10001335
MRDS ID A012075
Record type Site
Current site name Ophir Prospect
Related records 10136884

Geographic coordinates

Geographic coordinates: -135.10067, 58.86919 (WGS84)
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • LOCATION IS PRINTED ON JUNEAU D-4 QUAD., 1:63360 TOPOGRAPHIC SERIES 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

Analytical data

Result AU VALVES LOW

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
    Rock unit name Jualin Diorite
    Rock description Jualin Diorite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite

Nearby scientific data

(1) -135.10067, 58.86919
ListMap

Ore body information

  • Strike N 30 W-N 60 W
    Dip 45 E AVERAGE

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Juneau/Berners Bay

Land status

Ownership category National Forest

Comments on the workings information

  • SEVERAL 100 FT OF WORKINGS IN 3 TUNNELS, 2 OF WHICH WERE ON THE VEIN

Comments on development

  • MOST WORK COMPLETED PRIOR TO 1910

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012075

Bibliographic references

  • Deposit

    USGS BULL 284, P. 33

  • Deposit

    USGS BULL 446, P. 39

  • Deposit

    USGS BULL 800, P. 317

  • Deposit

    USGS OFR 85-717, NO. J089

  • Other Database

    BAG-OFR-85-717-089

General comments

Subject category Comment text
Deposit TRACE AMOUNTS OF PYRITE IN AURIFEROUS QUARTZ FISSURE VEIN 2 TO 6 FT WIDE; VUGS AND CAVITIES IN VEIN LINED WITH QUARTZ CRYSTALS
Deposit SEE ALSO: HORRIBLE, IVANHOE ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1985 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey