Black

The Black is a 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

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Site Name

Primary: Black

Commodity

Primary: Gold

Location

State: Alaska
District: Willow Creek

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

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

Physiography

Not available

Mineral Deposit Model

Model Name: Low-sulfide Au-quartz vein

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Role: Host
Age Type: Host Rock
Age Young: Late Cretaceous

Analytical Data

Not available

Materials

Ore: Gold
Gangue: Quartz

Comments

Comment (Exploration): Status = Inactive

Comment (Geology): Age = Late Cretaceous or younger; the mineralized host is the Late Cretaceous Willow Creek Pluton.

Comment (Workings): Workings / Exploration = Roehm (1937) reported that Sydney Black was developing a small property with two men employed on Craigie Creek, near the head.

Comment (Reference): Primary Reference = Roehm, 1937

Comment (Deposit): Model Name = Low-sulfide Au-quartz veins ? (Cox and Singer, 1986; model 36a ? )

Comment (Geology): Geologic Description = Very little information available on this prospect. Presumably the occurrence is similar to others in the area - auriferous quartz veins cutting quartz diorite. Country rock is the Late Cretaceous Willow Creek Pluton, a zoned pluton: the outer part consists of hornblende quartz diorite and lesser hornblende tonalite; the core consists of hornblende-biotite granodiorite, and lesser hornblende-biotite quartz monzodiorite and biotite quartz monzonite.

Comment (Geology): Age = Host rock is Late Cretaceous.

References

Reference (Deposit): ROEHM, J.C., 1937, PRELIMINARY REPORT OF MINING ACTIVITIES ON CROW CREEK, GIRDWOOD DISTRICT, ALASKA: TERRITORY OF ALASKA DEPARTMENT OF MINES REPORT (1946 SUPPLEMENT), 6P., 2 MAPS.

Reference (Deposit): Roehm, J.C., 1937, Preliminary report of operating mines and prospects, Willow Creek district, Alaska: Alaska Territorial Department of Mines Miscellaneous Report 85-4, 15 p.

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