Dollar Creek

Past Producer in Alaska, United States with commodities Gold, Tin, Titanium
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Mineral occurrence model information
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10000919
MRDS ID A011583
Record type Site
Current site name Dollar Creek
Related records 10161010

Geographic coordinates

Geographic coordinates: -151.05779, 62.5076 (WGS84)
Relative position C.C. Hawley and Associates, Inc. (1978, Fig. 4.2-B(3)) locate this property on Dollar Creek, a tributary to Cache Creek, just below an auriferous quartz-breccia bench deposit in the northwest quarter of Section 24, T. 28 N., R. 10 W., of the Seward Meridian.

Site location context

Political divisions (FIPS codes)

Matanuska-Susitna(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Talkeetna C-3(quadrangle 1:63,360 scale)

Talkeetna NE(quadrangle 1:100,000 scale)

Talkeetna C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Yentna River(hydrologic unit)

Susitna River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Tin Critical Secondary
Titanium Critical Secondary

Materials information

Materials Type of material
Arsenopyrite Ore
Cassiterite Ore
Gold Ore
Ilmenite Ore
Magnetite Ore
Pyrite Ore
Garnet Gangue
Quartz Gangue
Zircon Gangue

Alteration

  • (Local) Capps (1913) describes strongly altered graywacke and slate underlying the white quartz conglomerate. Reed and others (1978) note hydrothermally altered zones similar to Thunder Creeks (TL032, TL058), at the headwaters of Treasure (TL030), Dutch (TL033) and Bear Creeks (TL017) and at an unnamed locality east of McDoel Peak (TL053). Mineralogy of the alteration is not described by either of these authors. However, based on its reported similarity to altered zones at Thunder Creek, it is most likely argillic alteration of Mesozoic sedimentary rocks.

Mineral occurrence model information

Model code 119
USGS model code 39a
Deposit model name Placer Au-PGE
Mark3 model number 54

Nearby scientific data

(1) -151.05779, 62.5076

Economic information

Comments on the geologic information

  • Geologic Description = This property lies on Dollar Creek, a tributary to Cache Creek, just below an auriferous quartz-breccia bench deposit (C.C. Hawley and Associates, Inc. (1978) , Fig. 4.2-B(3).? At this locality, near the head of the main pay streak of Dollar Creek, Capps (1913) described a basal conglomerate unit of the Tertiary Kenai Group composed of white to dark gray quartz in subangular to angular fragments up to 4 inches in diameter, within a matrix of very fine quartz, white clay and muscovite. Underlying the white quartz conglomerate is a strongly altered graywacke and slate. Clark and Hawley (1968) later suggested that the stream placers and the 60-foot-wide conglomerate probably are derived from hydrothermally altered, gold-bearing, alaskite which intrudes a fault zone and from associated quartz veins. They described the conglomerate as white quartz-breccia. Source of the gold is Dollar Creek is proximal as suggested by Mertie (1919) who reports abundant pyrite in concentrates with 4.03 oz/ton gold and the discovery of a large nugget in the late 1900s worth $90. Clark and Hawley (1968) report the gold fineness ranges from 857 to 871, with an average of 865 with 150 to 500 ppm copper, 100 to 200 ppm lead. C.C. Hawley and Associates, Inc. (1978) report that significant resources remaining in Dollar Creek. ? the Dollar Creek channel probably represents an old southwest flowing drainage similar to those at Thunder (TL032, 058), Falls (TL030), Nugget (TL035) and Willow (TL042) Creeks (C.C. Hawley and Associates, Inc., 1978). From these older channels gold was reconcentrated into Cache Creek (TL029). Reed and others (1978) indicate that hydrothermally altered zones, similar to those at Dollar Creek, are observed along Thunder Creeks (TL032, TL058), at the headwaters of Treasure (TL030), Dutch (TL033) and Bear Creeks (TL017) and at an unnamed locality east of McDoel Peak (TL053).
  • Age = Pleistocene and Tertiary (Clark and Hawley, 1968).

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Mining district

District name Yentna

Comments on the production information

  • Production Notes = Mertie (1919) reports abundant pyrite in concentrates with 4.03 oz/ton gold and the discovery of a large nugget in the late 1900s worth $90.

Comments on the reserve resource information

  • Reserves = C.C. Hawley and Associates, Inc. (1978) report significant resources remaining in Dollar Creek.

Comments on the workings information

  • Workings / Exploration = The drainage has been prospected and mined by various small scale surface methods.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = C.C. Hawley and Associates, Inc., 1978

General comments

Subject category Comment text
Deposit Model Name = Placer Au-PGE (Cox and Singer, 1986; model 39a).
Deposit Other Comments = Reed and others (1978) indicate that hydrothermally altered zones similar to those at Dollar Creek are observed along Thunder Creeks (TL032, TL058), at the headwaters of Treasure (TL030), Dutch (TL033) and Bear Creeks (TL017) and at an unnamed locality east of McDoel Peak (TL053).

Reporter information

Type Date Name Affiliation Comment
Reporter 10-AUG-1998 Madelyn A. Millholland Millholland & Associates

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.