Anugi

The Anugi is a zinc, silver, and lead 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: Anugi

Commodity

Primary: Zinc
Primary: Silver
Primary: Lead

Location

State: Alaska
District: Fairhaven

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

Not available

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Hematite and limonite

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Sphalerite
Ore: Galena
Gangue: Quartz
Gangue: Limonite
Gangue: Hematite
Gangue: Calcite

Comments

Comment (Exploration): Status = Active?

Comment (Deposit): Model Name = A) Paleozoic, stratiform lead-zinc deposit remobilized during Cretaceous or younger tectonic and intrusive events; or B) Cretaceous or younger structurally-controlled veins and disseminations of lead and zinc minerals in Paleozoic bedrock.

Comment (Geology): Age = Mid-Paleozoic; Cretaceous or younger

Comment (Deposit): Other Comments = the Anugi Prospect is mostly in the Bendeleben quadrangle with the north-northeast portion extending into the Kotzebue quadrangle. Prospect is on NANA-owned lands. The area is underlain by permafrost.

Comment (Workings): Workings / Exploration = The original discovery was made during a regional stream-sediment sampling program for NANA Regional Corp. Soil sampling has been done on a 500-foot grid over an area of approximately 3 square miles. Some select areas have been sampled on 250- and 100-foot spacing. Soil, rock and pan concentrate samples have also been collected from adjacent areas. Seven trenches were dug with a backhoe and were mapped and sampled at 5-foot intervals. VLF, magnetics and gravity surveys have been run across the deposit in several areas and six core holes were completed in 1994. An airborne magnetic survey of the area was done in 1995 by Kennecott.

Comment (Reference): Primary Reference = This description

Comment (Geology): Geologic Description = The Anuyi prospect narrow, hematite-rich gossan that trends south-southwest for a distance of approximately 1/2 mile. The gossan is hosted predominately in black, graphitic, quartz-mica schist. Hematite cobbles are common on the surface. Hematite is also found as cement in quartz breccia. The metamorphic bedrock is considered to be early Paleozoic in age and has undergone several periods of deformation. Several rock types are present. They include quartz-mica schist, quartzite, limestone, rhyolite, and possible aplitic dikes. Soil sampling and shallowing trenching indicate that the gossan has weathered in place. Soil samples contain anomalous values of lead, zinc, antimony, arsenic, silver, and occasionally gold. The following sample values are from Williams (1991, 1992). Sample T2-20, taken from Trench 2 across the gossan, contained 14,579 ppm Pb, 737 ppm Zn, 48 ppm Ag and 60 ppm Cu. Rock sample #1328 of gossan material contained 7,264 ppm Pb, 5,243 ppm Zn, 15.6 ppm Ag and 116 ppm Cu. Sample 1374, graphitic, quartz-mica schist, contained 6,469 ppm Pb, 1,597 ppm Zn, 78.2 ppm Ag and 380 ppm Cu. On the basis of soil samples having lead values greater than 500 ppm, the mineralized area extends over 9,000 feet in a south-southwest direction with a width of 500 to 2,000 feet. The surface distribution of anomalous metal values, suggests that the deposit appears to be structurally controlled along a regional north-northeast trend. Samples from drill core contain galena and sphalerite in carbonate veins, as disseminations in schist, and as small crystals of sphalerite in open fractures. A sample of black, quartz-mica schist from trench 3 had hematite alteration along small fractures. The model for Anugi is conjectural. It may be a Paleozoic strataform massive sulfide deposit remobilized during Cretaceous intrusion and/or Tertiary volcanism; or, perhaps more likely, a Cretaceous or younger structurally-controlled deposit hosted in Paleozoic rocks.

References

Reference (Deposit): Ebish, J., Olson, D. and Williams, A., 1994, Anugi Report 1994: unpublished report, Kennecott Exploration Company, Spokane, Washington, 120 p. (Report held by NANA Regional Corporation, Anchorage, Alaska).

Reference (Deposit): Williams, Anita, 1992, NANA land selection evaluation, 1991, Candle-Deering area: unpublished report prepared for NANA Regional Corporation, 45 p. (Report by NANA Regional Corporation, Anchorage, Alaska).

Reference (Deposit): Williams, Anita, 1991, NANA Land selection evaluation 1990: unpublished report prepared for NANA Regional Corporation, 52 p. (Report held by NANA Regional Corporation, Anchorage, Alaska).

Reference (Deposit): Degenhart, C.E. and Bigelow, C.G., 1974, Preliminary minerals evaluation NANA Regional corporation selection lands: unpublished report, WGM, Anchorage, Alaska, 84 p. (Report held by NANA Regional Corporation, Anchorage, Alaska).

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