The Ronan is a lead, gold, silver, and zinc mine located in Alaska.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation:
Commodity: Lead, Gold, Silver, Zinc
Lat, Long: 56.003, -130.04800
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Ronan MRDS details
Site Name
Primary: Ronan
Commodity
Primary: Lead
Primary: Gold
Primary: Silver
Primary: Zinc
Secondary: Tungsten
Location
State: Alaska
District: Hyder
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Model Name: Polymetallic veins
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Galena
Ore: Pyrite
Ore: Scheelite
Ore: Sphalerite
Ore: Tetrahedrite
Gangue: Quartz
Comments
Comment (Workings): 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).
Comment (Reference): Primary Reference = Maas and others, 1995
Comment (Geology): 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.
Comment (Deposit): Model Name = Polymetallic veins
Comment (Deposit): Other Comments = The Ronan vein may continue to the northwest and join the Monarch vein (BC079).
Comment (Geology): 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.
Comment (Production): Production Notes = An unknown, but probably small, amount of gold reportedly was produced from the Ronan deposit (Maas and others, 1995, p. 260).
References
Reference (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.
Reference (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.
Reference (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.
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