Marion Mine (Jack Wilcox Mine), Nutkwa Lagoon, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi

Regional Level Types
Marion Mine (Jack Wilcox Mine)	Mine
Nutkwa Lagoon	Lagoon
Prince of Wales Island	Island
Ketchikan Mining District	Mining District
Prince of Wales-Hyder Census Area	Census Area
Alaska	State
USA	Country

Location: The Marion prospect is at an elevation of about 110 feet, 1.2 km (3,900 feet) NNE of Nutkwa Lagoon (coordinates of record), about 0.8 mile W of the mouth of the stream at the head of Nutkwa Lagoon. It is about 0.4 mile SE of the center of section 32, T77S, R86E.

Geology: By 1916, the Marion prospect had been explored by a 400-foot adit with a 50-foot winze about 190 feet from the portal (Chapin, 1916). Roehm (1939 [PE 119-18] ) called it the Jack Wilcox prospect, and it was restaked in 1944 (Twenhofel and others, 1949). Wolff and Heiner (1971) indicate that the property has produced about 50 ounces of gold, 3 ounces of silver, and 36 pounds of lead. The rocks in the vicinity are greenschist of the Wales Group of Late Proterozoic and Cambrian age. The adit follows a calcite-bearing quartz vein up to 6 feet thick that is along a shear zone that strikes N20-30W and dips 80W (Herreid and others, 1978). The vein contains small amounts of arsenopyrite, chalcopyrite, galena, pyrite, and sphalerite. Roehm (1939 [PE 119-18]) collected 21 samples across the mineralized zone that averaged 0.06 ounce of gold per ton, and 0.66 ounce of silver per ton; the highest value was 0.66 ounce of gold per ton. As described by Roehm, the mineralized zone is 3 to 12 feet wide and extends for 3,000 feet to an elevation of about 1,000 feet. Maas and others (1991) could not locate the workings under a landslide and recent logging. However, they identified several thin, mineralized fault zones on the surface nearby. A sample from a 4-inch quartz vein in the footwall of a 11-foot-wide fault zone contained 3,828 parts per million (ppm) Au, 12.6 ppm Ag, and 5,590 ppm Zn.

Workings: By 1916, the Marion prospect had been explored by a 400-foot adit with a 50-foot winze about 190 feet from the portal (Chapin, 1916). Roehm (1939 [PE 119-18] ) called it the Jack Wilcox prospect, and it was restaked in 1944 (Twenhofel and others, 1949).

Alteration: None specifically noted, but the mineralized quartz vein occurs along a shear zone.

Commodities (Major) - Ag, Au, Cu, Zn

Development Status: Yes

Deposit Model: Sulfide-bearing gold-quartz vein (Cox and Singer, 1986; model 36a).

Other Databases

Link to USGS - Alaska:	CR163

Other Regions, Features and Areas containing this locality

References