Shepard

The Shepard is a zinc, copper, and gold 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: Shepard

Commodity

Primary: Zinc
Primary: Copper
Primary: Gold
Secondary: Cobalt

Location

State: Alaska
District: McGrath

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Polymetallic veins

Orebody

Not available

Structure

Not available

Alterations

Alteration Text: Silicic and phyllic in intrusion.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Arsenopyrite
Ore: Chalcopyrite
Gangue: Quartz

Comments

Comment (Reference): Primary Reference = DiMarchi and others, 1992

Comment (Workings): Workings / Exploration = Surface samples taken by DiMarchi and others (1992) contain up to 500 ppb gold. Nine samples averaged 100 ppb gold. Copper, cobalt, and arsenic values are not given.

Comment (Deposit): Other Comments = The Shepard occurrence is on lands selected or owned by Doyon Ltd. For further information, contact Doyon Ltd. at 210 1st Ave., Fairbanks, Alaska, 99701.

Comment (Geology): Geologic Description = The Shepard occurrence consists of quartz veins in and near a northwest trending quartz monzonite dike swarm (DiMarchi and others, 1992). The quartz veins contain disseminated arsenopyrite, chalcopyrite, and carry gold values; they are found in zones of silicic and phyllic alteration in the quartz monzonite dikes. Surface samples collected by DiMarchi and others (1992) contain up to 500 ppb gold. Nine samples averaged 100 ppb gold. Copper, cobalt, and arsenic values are not given.

Comment (Deposit): Model Name = Polymetallic veins (Cox and Singer, 1986; model no. 22c)

Comment (Exploration): Status = Inactive

References

Reference (Deposit): DiMarchi, J.J., Weglarz, T.B., Freeman, L.K., Nicholson, L.C., and Barker, J.C., 1992, Annual Report for 1992--Doyon Option Lands, Block 10: ASA Inc. Report, 121 pages (Report held by Doyon Ltd., Fairbanks, Alaska.)

The Top Ten Gold Producing States

These ten states contributed the most to the gold production that built the West from 1848 through the 1930s. The Top Ten Gold Producing States.