Boulder Lode

Occurrence in Alaska, United States with commodities Antimony, Gold, Tungsten

Geologic information

Identification information

Deposit ID 10001979
MRDS ID A012823
Record type Site
Current site name Boulder Lode

Geographic coordinates

Geographic coordinates: -165.5205, 64.65095 (WGS84)
Location accuracy 500(meters)
Relative position Within 1/4 Mi. Radius
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • APPROX. LOCATION BASED ON DESCRIPTION IN USGS BULLETIN 722; ON S SIDE OF BOULDER CR. ABOUT 1/4 MI ABOVE MOUTH OF TWIN MT. CR. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Antimony Primary
Gold Primary
Tungsten Secondary

Materials information

Materials Type of material
Scheelite Ore
Stibnite Ore
Calcite Gangue
Pyrite Gangue
Quartz Gangue

Analytical data

Result NOT AVAILABLE

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -165.5205, 64.65095

Ore body information

  • General form LENSES

Controls for ore emplacement

  • Schist-Limestone Contact

Comments on the geologic information

  • SCHIST IS BOTH OVERLAIN AND UNDERLAIN BY LIMESTONE; CLEAVAGE IN SCHIST: TRENDS S 60 DEGREES W.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1915

Comments on the workings information

  • 92 FT ADIT DRIVE S 60 DEGREES W AND AT LEAST ONE OPEN-CUT MADE CIRCA 1916.

Comments on development

  • DEVELOPED IN 1916; 50 LB OF STIBNITE MINED FROM OPEN-CUT NEAR PORTAL OF ADIT IN 1916; MY NOT HAVE BEEN SHIPPED.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012823

Bibliographic references

  • Deposit

    USGS BULLETIN 662, P. 427-429, 440.

  • Deposit

    USGS BULLETIN 722, P. 184, 251-152.

  • Deposit

    USGS OFR 17, P. 5.

  • Deposit

    TDM PAM 5-R, P. 12.

  • Deposit

    USGS OFR 77-796-B, P. 30, LOC. 383.

  • Other Database

    BAG-MF-463-37

General comments

Subject category Comment text
Deposit SHEAR ZONE IN ALTERED SCHIST CONTAINS NUMEROUS VEINS AND LENSES OF QUARTZ AND THIN STRINGERS OF LIMONITIC MATERIAL; SCHEELITE IN QUARTZ VEINS; PYRITE, ARSENOPYRITE, STIBNITE AND GOLD IN QUARTZ VEINS AND WALL ROCK; AU DETECTED IN ASSAY.
Deposit COATS COULD NOT FIND ANY SCHEELITE IN UNDERGROUND WORKINGS USING A UV LAMP IN 1943. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-87 Leonard, Kenneth R. (Huber, Donald F.) U.S. Geological Survey