Unnamed (on William Henry Mountain) (ARDF #JU059) Pb, Zn

Unnamed (on William Henry Mountain)

Occurrence, Inactive

Commodities and mineralogy

Main commodities	Pb; Zn
Gangue minerals	quartz

Geographic location

Quadrangle map, 1:250,000-scale	JU
Quadrangle map, 1:63,360-scale	C-4
Latitude	58.749
Longitude	-135.2806
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	This occurrence is at an elevation of about 2,800 feet, approximately 1/2 mile north-northeast of William Henry Mountain and 1.5 mile west of Lynn Canal. It is just northwest of the center of section 17, T. 36 S., R. 61 E. of the Copper River Meridian. The location is accurate within 1/4 mile.

Geologic setting

Geologic description The general area is underlain mainly by Silurian and Devonian graywacke and argillite and Middle Devonian carbonate, clastic and volcanic rocks (MacKevett and others, 1971; Brew and others, 1978). The country rocks at this prospect are Silurian graywacke and Devonian and Silurian greenstone intruded by small bodies of Cretaceous quartz monzonite and syenite (Clough and Redman, 1989). The U.S. Bureau of Mines sampled a quartz vein at this site that contained 17,000 ppm zinc and 1,400 ppm lead (Clough and Redman, 1989).
Geologic map unit	(-135.282417991563, 58.7486699415118)

Geologic description

The general area is underlain mainly by Silurian and Devonian graywacke and argillite and Middle Devonian carbonate, clastic and volcanic rocks (MacKevett and others, 1971; Brew and others, 1978). The country rocks at this prospect are Silurian graywacke and Devonian and Silurian greenstone intruded by small bodies of Cretaceous quartz monzonite and syenite (Clough and Redman, 1989). The U.S. Bureau of Mines sampled a quartz vein at this site that contained 17,000 ppm zinc and 1,400 ppm lead (Clough and Redman, 1989).

Geologic map unit

(-135.282417991563, 58.7486699415118)

Production and reserves

Workings or exploration	Surface sampling only.
Indication of production	None
Additional comments The Lucky Six (JU057) , William Henry (JU060), Kings View (JU058), Athero (JU062), and this record are on the flanks of William Henry Mountain and have been collectively referred to as the William Henry prospect or as being in the William Henry area.

References

References Brew, D.A., Johnson, B.R., Grybeck, D., Griscom, A., Barnes, D.F., Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources of the Glacier Bay National Monument Wilderness Study Area, Alaska: U.S. Geological Survey Open-File Report 78-494, 670 p., 7 sheets. Clough, A.H., and Redman, E.C., 1989, Bureau of Mines mineral investigations in the Juneau mining district, Alaska, 1984-1988, Volume 2, Detailed mine, prospect, and mineral occurrence descriptions, Section C, West Lynn Canal subarea: U.S. Bureau of Mines of Mines Special Publication, 44 p. MacKevett, E.M., Jr., Brew, D.A., Hawley, C.C., Huff, L.C., and Smith, J.G., 1971, Mineral resources of Glacier Bay National Monument, Alaska: U.S. Geological Survey Professional Paper 632, 90 p., 12 plates, scale 1:250,000.
Reporters	J.C. Barnett and L.D. Miller (Juneau, Alaska )
Last report date	12/15/2001