Stampede Mine

The Stampede Mine is a antimony mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Stampede Mine

Commodity

Primary: Antimony
Secondary: Silver
Secondary: Gold
Tertiary: Zinc

Location

State: Alaska
District: Kantishna/Stampede Creek

Land Status

Land ownership: National Park
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Owner Name: E. R. Pilgrim

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1937
Year Last Production: 1970
Years of Production:
Organization:
Significant: N
Deposit Size: L

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Form: LENSES AND KIDNEYS

Structure

Type: R
Description: Stampede Anticline, Trend: N55e To S 85e, Plunge: Ne, Cut By Stampede Fault

Type: L
Description: Pronounced Change In Strike Of Stampede Fault, From N 50 E To N 80 E, Near The Mine

Alterations

Alteration Type: L
Alteration Text: Secondary Sb Minerals, Stibiconite And Cervantite Near Surface, Kermesite Underground

Rocks

Name: Andesite
Role: Associated
Age Type: Host Rock Unit
Age Young: Early Cambrian

Analytical Data

Analytical Data: PYRITE-RICH TABLE CONCENTRATE ALSO REPORTED TO HAVE SHOWN 1.71 OZ/TON AU, USGS BULLETIN 936-N, P. 341-342
Analytical Data: COMPOSITE SAMPLE OF CONCENTRATES: 59.8% SB, 0.62% AS, 0.03 OZ/TON AU, 0.41 OZ/TON AG, TRACES OF CU, PB, ZN

Materials

Ore: Stibnite
Ore: Gold
Ore: Sphalerite
Gangue: Chlorite
Gangue: Pyrite
Gangue: Cervantite
Gangue: Kermesite
Gangue: Muscovite
Gangue: Quartz
Gangue: Stibiconite

Comments

Comment (Development): USBM EXPLORATION WORK IN 1942-1943; DMEA CONTRACT WORK DONE IN 1953-1955 INCLUDED EXTENSIVE DRILLING AND TRENCHING; BUNDTZEN (1976) REPORTS DRILL CORE INTERSECTIONS WITH 2 UNDEVELOPED HIGH GRADE ORE SHOOTS

Comment (Deposit): 1,500 FT OF KNOWN STRIKE LENGTH; ORE OCCURS IN HIGH GRADE (GREATER THAN 50% SB) VEINS AND LENSES, IN STRINGERS AND VEINLETS OF ALMOST PURE STIBNITE IN SHEAR ZONES AND DISSEMINATED IN QUARTZ VEINS (10-20% SB)

Comment (Workings): COMPLEX SERIES OF DRIFTS, CROSS CUTS, CONNECTING SHAFTS AND RAISES MOSTLY CAVED IN 1978; OPEN CUTS AND SURFACE TRENCHING EXTENSIVE; MILL ON SITE

Comment (Geology): ORE BODIES COMPRISE A SERIES OF VEINS THAT FOLLOW A LOW ANGLE OFFSHOOT OF THE STAMPEDE FAULT AND ARE COMMONLY WIDER AND HIGHER IN GRADE NEAR CROSS FAULT INTERSECTIONS. QUARTZITIC SCHIST CUT BY SMALL ANDESITE AND BASALT DIKES.

Comment (Deposit): ORE ALSO DISCOVERED ON NORTH SIDE OF STAMPEDE CREEK; ALASKA'S LARGEST ANTIMONY PRODUCER, SECOND LARGEST AMERICAN ANTIMONY MINE; SEE ALSO: LAST CHANCE, SLATE CREEK ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Production): DOES NOT INCLUDE 150 TONS OF HIGH GRADE ORE MINED BETWEEN 1916 AND 1937; ORE + CONCENTRATE RAN 50 TO 56% SB

Comment (Reserve-Resource): LINE 1: BUNDTZEN, 1983, P.23; LINE 2: MACKEVETT ET AL, 1978, P.35

Comment (Commodity): AU APPARENTLY ASSOCIATED WITH QUARTZ; LOW AU CONTENT IN SB-POOR, PYRITE-RICH PARTS OF VEIN

Comment (Reserve-Resource): BUNDTZEN, T.K, 1983, P.23

References

Reference (Deposit): USGS BULLETIN 936-N, P.331-348

Reference (Deposit): USBM INFORMATION CIRCULAR 7379, P.67

Reference (Deposit): USBM REPORT OF INVESTIGATIONS 4173, P.3-20

Reference (Deposit): USGS BULLETIN 1108-A, P.A27-A29

Reference (Deposit): USGS BULLETIN 1155, P. 10-17

Reference (Deposit): USGS BULLETIN 1246, P.229-231

Reference (Deposit): USGS PROFESSIONAL PAPER 820, P.48

Reference (Deposit): ADGGS OPEN FILE 98, P. 8-10, 16-17, 27, 38-39

Reference (Deposit): USBM OPEN FILE 24-78, P. 4-32, 4-36 TO 4-45

Reference (Deposit): USGS OPEN FILE 78-1-E, P.35

Reference (Deposit): 11) ADGGS REPORT OF INVESTIGATION 83-12, P. 23

Reference (Production): BUNDTZEN, 1976, P.27

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