Waterfall Creek

Prospect in Alaska, United States with commodities Zinc, Molybdenum, Lead

Geologic information

Identification information

Deposit ID 10307414
Record type Site
Current site name Waterfall Creek

Geographic coordinates

Geographic coordinates: -141.05278, 65.37981 (WGS84)
Relative position The Waterfall Creek prospect area encompasses about 20 square miles; the approximate center of the area is in section 29, T. 6 N., R. 32 E., of the Fairbanks Meridian. The coordinates are for the most mineralized portion of the prospect area, which trends north-northeast through the center of section 1, T. 6 N., R. 32 E., of the Fairbanks Meridian. This location is accurate to within one mile. This prospect is located within Doyon, Limited selected or conveyed land.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Zinc Primary
Molybdenum Secondary
Lead Secondary

Materials information

Materials Type of material
Pyrite Ore
Quartz Gangue

Alteration

  • (Local) Alteration at the Waterfall Creek prospect consists of chloritization of the basalt, iron oxide in breccia clasts in silicified limestone or quartzite, and quartz veins and vug fillings (DiMarchi and others, 1993).

Nearby scientific data

(1) -141.05278, 65.37981

Comments on the geologic information

  • Geologic Description = The Waterfall Creek prospect is underlain by northwest-dipping, Upper Proterozoic to Lower Cambrian Tindir Group rocks (redbeds, basalt, limestone, and conglomerate), which transition northwestward into black chert, green siltstone, and quartzite (DiMarchi and others, 1993). The Waterfall Creek thrust separates the Tindir Group from a Cambrian through Permian sedimentary sequence which lies to the west. Bedding in this area generally strikes north-northeast and dips from 80SE to 55NW (DiMarchi and others, 1993). Minor fine-grained disseminated pyrite is present in altered basalt and siltstone units. Alteration consists mostly of chloritization of basalt and oxidation of cherts and siltstones. Iron oxides are found locally, most of them in clasts of breccia which is hosted by silicified limestone or quartzite. White quartz veins and drusy quartz veinlets and vuggy fillings are also common in brecciated rocks (DiMarchi and others, 1993). Soil and stream sediment samples taken by WGM Inc. and by ASA Inc. are anomalous in zinc in the prospect area. Weak anomalies of molybdenum and lead were also found (DiMarchi and others, 1993).
  • Age = Permian or younger.

Economic information

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Active

Mining district

District name Black

Comments on the workings information

  • Workings / Exploration = WGM Inc. conducted a soil and rock sampling program on the property in the mid-1970s, and in 1993 ASA Inc. conducted a soil and rock sampling program and geologic mapping. The property is located on Doyon, Limited selected or conveyed land.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF CY036

Bibliographic references

  • Deposit

    DiMarchi, J.J., Weglarz, T.B., Adams, D.D., Hubert, J.A., and West, A.W., 1993, 1993 annual report reconnaissance program, Doyon option lands: ASA Inc., 120 p. (Report held by Doyon Ltd., Fairbanks, Alaska.)

Comments on the references

  • Primary Reference = DiMarchi and others, 1993

General comments

Subject category Comment text
Deposit Model Name = Fault-controlled Zn?
Deposit Other Comments = This prospect is located on Doyon, Limited selected or conveyed land. For more information, contact Doyon, Limited. This site is within the Yukon-Charley Rivers National Preserve.

Reporter information

Type Date Name Affiliation Comment
Reporter 07-APR-00 Cameron, C.E. Alaska Division of Geological and Geophysical Surveys