Ronan

Unknown in Alaska, United States with commodities Silver, Gold, Lead, Zinc, Tungsten

Geologic information

Identification information

Deposit ID 10003620
MRDS ID A106378
Record type Site
Current site name Ronan

Geographic coordinates

Geographic coordinates: -130.04953, 56.00255 (WGS84)
Relative position SEE LOCATION COMMENTS
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • 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.

Commodities

Commodity Importance
Silver Primary
Gold Primary
Lead Primary
Zinc Primary
Tungsten Primary

Mineral occurrence model information

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

Nearby scientific data

(1) -130.04953, 56.00255

Ore body information

  • General form SEE DEPOSIT DESCRIPTION COMMENTS

Comments on the geologic information

  • 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

Economic information about the deposit and operations

Commodity type Metallic
Significant No

Mining district

District name Hyder

Comments on the production information

  • 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

  • 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

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A106378
USGS Alaska Resource Data File ARDF BC086

Bibliographic references

  • Deposit

    Smith, J.G., 1977, Geology of the Ketchikan D1 and Bradfield Canal A-1 quadrangles, southeastern 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 81-728A, 35 p.,1 sheet, scale 1:250,000.

General comments

Subject category Comment text
Deposit 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
Deposit 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.
Deposit THE RONAN VEIN MAY CONTINUE TO THE NORTHWEST AND JOIN THE MONARCH VEIN (BC079).

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1998 Berg, H. C. U.S. Geological Survey