|Quadrangle map, 1:250,000-scale||RM|
|Quadrangle map, 1:63,360-scale||A-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The Rocky Ridge prospect is on the ridge between Rocky Creek and California Creek, about 1.0 mile southwest of triangulation station Bonanza. It is about 0.2 mile north of the center of section 2, T. 11 N., R. 60 W. The location is accurate.|
Geologic descriptionThe Rocky Ridge prospect is an area of anomalous soil and rock samples on the ridge between Rocky Creek and California Creek. Bedrock in the area is Jurassic sedimentary and volcanic rocks (Box and others, 1993; Wenz, 2004, 2005; Strachan, 2005). Tonogold Resources, Inc. (2006) has a mining lease agreement with Calista Corporation covering the Nyac area. They completed detailed soil geochemical surveys in several areas including this prospect in the summer of 2005. Strachan (2005) shows a map of soil sample sites in the area of this prospect; several samples contain several hundred parts per billion gold.
|Geologic map unit||(-159.875604462421, 61.0745678994163)|
|Mineral deposit model||Low-sulfide Au-Bi-Te-quartz veins.|
|Age of mineralization||Probably mid-Cretaceous as at the Bonanza Ridge prospect (RM037).|
|Workings or exploration||Tonogold Resources, Inc. has a mining lease agreement with Calista Corporation covering the Nyac area (http://www.tonogold.com/s/Nyac.asp; Apr. 2006). They completed detailed soil geochemical surveys in several areas including this prospect in the summer of 2005 and 2006.|
|Indication of production||None|
Box, S. E, Moll-Stalcup, E. J., Frost, T. P., and Murphy, J. M., 1993, Preliminary geologic map of the Bethel and southern Russian Mission quadrangles, southwestern Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2226-A, 20 p., scale 1:250,000.
Strachan, D. G., 2005, A summary and interim status report on Tonogold's 2005 geochemical exploration of the Nyac gold district, southwest Alaska: Private report for Tonogold Resources, 20 p. (Available online at: http://www.tonogold.com/i/pdf/2005_Final_Report_5m.pdf.)
Tonogold Resources, Inc., 2006: www.tonogold.com/s/Nyac.asp (as of April, 2007)
Wenz, Z.. J., 2004, Geology and gold mineralization of the Nyac district, southwest Alaska: MS thesis, University of Alaska, Fairbanks, 133 p.
|Reporters||Travis L. Hudson (Applied Geology, Inc.)|
|Last report date||4/8/2007|