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Stoner

Prospect in Alaska, United States with commodities Silver, Gold, Lead, Zinc
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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 10000190
MRDS ID A010226
Record type Site
Current site name Stoner
Alternate or previous names Stoner Gold and Silver Mining Corporation

Geographic coordinates

Geographic coordinates: -130.03064, 56.03477 (WGS84)
Relative position The Stoner prospect, also referred to as the Stoner Gold and Silver Mining Corporation, is in Section 25 at an elevation of about 850-1450 feet on the divide between Cabin and Boundary creeks, and within a few hundred feet of Cabin Creek (Elliott and Koch, 1981, p. 16, loc. 63). The location probably is accurate within a few hundred feet.

Site location context

Political divisions (FIPS codes)

Prince of Wales-Hyder(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bradfield Canal A-1(quadrangle 1:63,360 scale)

Bradfield Canal SE(quadrangle 1:100,000 scale)

Bradfield Canal(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Southern Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Tongass National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary
Lead Primary
Zinc Critical Primary

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Pyrrhotite Ore
Sphalerite Ore
Tetrahedrite Ore
Calcite Gangue
Quartz Gangue

Alteration

  • (Local) Greenstone is impregnated with sulfide minerals; local silicification of greenstone

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 (youngest) Jurassic

Nearby scientific data

(1) Canada
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The country rocks in the area of this prospect are pelitic metasedimentary and subordinate andesitic metavolcanic (greenstone) strata of the Jurassic or older Mesozoic Hazelton Group; the Triassic Texas Creek Granodiorite, which underlies and locally intrudes the Hazelton; the Eocene Boundary Granodiorite, which intrudes the Hazelton and Texas Creek rocks; and still-younger Tertiary lamprophyre dikes, which cut all the other rocks (Smith 1973, 1977; Koch, 1996).? There are three types of deposits on the property (Westgate, 1922, p. 131-132; Buddington, 1925, p. 74, 83; 1929, p. 43, 89-90; Cobb, 1978, p. 76): (1) sulfides in quartz-calcite veins and disseminated sulfides in greenstone; (2) sparse sulfides in quartz fissure veins in or near contacts between slate and granitic dikes; and (3) sulfides in seams, disseminations, and along fractures in quartz porphyry dikes. The sulfides are pyrite, sphalerite, galena, tetrahedrite, and pyrrhotite. In addition to sulfide replacement, some of the greenstone also is silicified. Early assays reportedly showed as much as 0.5 oz Au and 20.5 oz Ag per ton, and 28% Pb.? 'Concentrated' sulfide samples from a shear zone on the Stoner prospect yielded an Eocene lead-isotope age (Maas and others, 1995, p. 254). The deposit, however, is similar in mineralogy, structural setting, and hostrock to isotopically-dated Jurassic deposits nearby in the Hyder district (see, for example, BC065, BC067). The lode thus may be polygenetic, originating as a 'disseminated' deposit during Jurassic Hazelton island-arc volcanism (Alldrick, 1993), and then partly remobilized into shear zones during emplacement of the Boundary Granodiorite.?
  • Age = 'Concentrated' sulfide samples from a shear zone on the Stoner prospect yielded an Eocene lead-isotope age (Maas and others, 1995, p. 254). The deposit, however, is similar in mineralogy, structural setting, and hostrock to isotopically-dated Jurassic deposits nearby in the Hyder district (see, for example, BC065, BC067). The lode thus may be polygenetic, originating as a 'disseminated' deposit during Jurassic Hazelton island-arc volcanism (Alldrick, 1993), and then partly remobilized into shear zones during emplacement of the Boundary Granodiorite.
  • Age = Host rock is similar to isotopically dated Jurassic deposits nearby.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Hyder

Comments on the workings information

  • Workings / Exploration = Prospect was explored in 1920's by open cuts and a 15-foot shaft.? As much as 0.5 oz Au and 20.5 oz Ag per ton, and 28% Pb reported in early assays.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Buddington, 1929

General comments

Subject category Comment text
Deposit Model Name = Polymetallic veins
Deposit Other Comments = Deposit originally staked in early 1920's

Reporter information

Type Date Name Affiliation Comment
Reporter 17-MAY-1998 H. C. Berg U.S. Geological Survey

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.