1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Ronan

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

Geologic information

Identification information

Deposit ID 10308520
Record type Site
Current site name Ronan

Geographic coordinates

Geographic coordinates: -130.04975, 56.00277 (WGS84)
Relative position The Ronan mine is in Section 2 at an elevation of about 2800 feet on the rounded ridge about 0.1 mile west of Skookum Creek, and 0.8 mile east of the Riverside mine (adit) (Maas, 1995, p. 255 and fig. 66). The location is accurate within about 0.1 mile.

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
Tungsten Critical Secondary

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Scheelite Ore
Sphalerite Ore
Tetrahedrite Ore
Quartz Gangue

Mineral occurrence model information

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

Nearby scientific data

(1) -130.04975, 56.00277
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The country rocks in the area of the Ronan mine are pelitic metasedimentary and subordinate andesitic metavolcanic strata of the Jurassic or older Mesozoic Hazelton Group; the Triassic Texas Creek Granodiorite, which underlies and locally intrudes the Hazelton; and the Eocene Hyder Quartz Monzonite, which intrudes the Hazelton and Texas Creek rocks (Smith, 1977; Koch, 1996). Maas and others(1995, p. 254-257) describe the deposit as a well-defined shear or fracture zone in Texas Creek Granodiorite. The zone strikes northwest and dips steeply northeast, and contains sulfide shoots in quartz or quartz(-granodiorite?)-breccia veins. The principal sulfides are pyrite, galena, sphalerite and tetrahedrite; some of the veins contain scheelite. Samples collected by the U. S. Bureau of Mines in 1992 or 1993 from about 450 feet of the approximately 2-foot-thick main Ronan vein averaged 5.8 ppm Au, 296 ppm Ag, 0.3% Cu, 1.6% Pb, and 0.35% Zn (Maas and others, 1995, p. 257). Lead-isotope studies of galena from the Ronan mine (Maas and others, 1995, p. 254) indicate that the deposit is Eocene in age, contemporaneous with the emplacement of the Hyder Quartz Monzonite.
  • Age = Lead-isotope studies of galena from the Ronan mine (Maas and others, 1995, p. 254) indicate that the deposit is Eocene in age, contemporaneous with the emplacement of the Hyder Quartz Monzonite.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Mining district

District name Hyder

Comments on the production information

  • Production Notes = An unknown, but probably small, amount of gold reportedly was produced from the Ronan deposit (Maas and others, 1995, p. 260).

Comments on the workings information

  • Workings / Exploration = The Ronan mine was explored by pits and trenches, and developed by about 700 feet of underground workings (Maas and others, 1995, p. 255). Samples collected by the U. S. Bureau of Mines in 1992 or 1993 from about 450 feet of the approximately 2-foot-thick main Ronan vein averaged 5.8 ppm Au, 296 ppm Ag, 0.3% Cu, 1.6% Pb, and 0.35% Zn (Maas and others, 1995, p. 257).

Reference information

Bibliographic references

  • Deposit

    Smith, J.G., 1977, Geology of the Ketchikan D-1 and Bradfield Canal A-1 quadrangles, Alaska: U.S. Geological Survey Bulletin 1425, 49 p.

  • Deposit

    Maas, K.M., Bittenbender, P E., and Still, J.C., 1995, Mineral investigations in the Ketchikan mining district, southeastern Alaska: U.S. Bureau of Mines Open-File Report 11-95, 606 p.

  • Deposit

    Koch, R.D., 1996, Reconnaissance geologic map of the Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-A, 35 p., 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Maas and others, 1995

General comments

Subject category Comment text
Deposit Model Name = Polymetallic veins
Deposit Other Comments = The Ronan vein may continue to the northwest and join the Monarch vein (BC079).

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.