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Stoney Vein

Prospect in Alaska, United States with commodities Silver, Gold, Copper, Lead, Arsenic, Antimony
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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. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10003498
MRDS ID A106256
Record type Site
Current site name Stoney Vein

Geographic coordinates

Geographic coordinates: -152.92278, 61.90949 (WGS84)
Relative position Alaska Department of Natural Resources claim records show this property located approximately one mile north of Mount Stoney in Section 15, T 21 N., R 20 W. Location is accurate to 500 feet.

Site location context

Political divisions (FIPS codes)

Matanuska-Susitna(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Tyonek D-8(quadrangle 1:63,360 scale)

Tyonek NW(quadrangle 1:100,000 scale)

Tyonek(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
Silver Primary
Gold Primary
Copper Primary
Lead Primary
Arsenic Critical Secondary
Antimony Critical Secondary

Comments on the commodity information

  • Ore Material = Copper (native)

Materials information

Materials Type of material
Arsenopyrite Ore
Chalcopyrite Ore
Galena Ore
Gold Ore
Pyrite Ore
Pyrrhotite Ore
Sphalerite Ore
Stibnite Ore
Copper Ore
Calcite Gangue
Dolomite Gangue
Epidote Gangue
Graphite Gangue
Quartz Gangue
Siderite Gangue
Tourmaline Gangue

Alteration

  • (Local) Calcite, epidote, sericite, tourmaline, quartz

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Host
    Rock type
    Stratigraphic age (oldest) Late Jurassic

Nearby scientific data

(1) -152.92278, 61.90949
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Part of the Yentna trend of Late Cretaceous/early Tertiary composite plutons (Tcp) described by Reed and Nelson (1980), the Mount Estelle pluton (Tme, Reed and Elliott, 1970) extends from Timber Creek on the south to the Portage Creek area in the north. At this site in the central part of the pluton, a biotite-hornblende-quartz monzonite intrudes Mesozoic marine sedimentary rocks (KJs) of the Kahiltna terrane. ? Two veins follow dilatational zones within the pluton along its west side (Cominco American Incorporated, unpublished reports, 1986-1987). The Main Stoney vein is steeply dipping structure that is mapped as more than 3 miles long, varies in measured width from 14 feet to 60 feet and has a vertical relief of at least 1000 feet. The mineralogy consists of alternating sulfide-quartz -carbonate vein material and altered intrusive material. The mineralogy consists of quartz-calcite-dolomite-siderite-tourmaline-pyrrhotite-chalcopyrite- arsenopyrite-pyrite-stibnite +/- graphite, sphalerite and galena. The North Stoney vein is a sub-parallel feature just west of the northern end of the Main Stoney vein. This vein is 35 feet at it's widest and has similar mineralogy to the Main Stoney vein. A third vein is located one mile to the west.
  • Age = Possibly related to the Tertiary/Cretaneous pluton that is the host rock
  • Age = Host rock is Tertiary - Cretaceous.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Yentna

Comments on the workings information

  • Workings / Exploration = Exploration included prospecting, rock chip geochemical sampling, and mapping. Technical climbers were employed to map and sample the steep terrain.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Reed and Elliott, 1970

General comments

Subject category Comment text
Deposit Model Name = Polymetallic vein (Cox and Singer, 1986; model 22c)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1998 Madelyn A. Millholland Millholland & Associates

Beyond USGS

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

Maps centered on this site

Authoritative Alaska resources

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