Quadrangle map, 1:250,000-scale | MC |
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Quadrangle map, 1:63,360-scale | C-8 |
Latitude | 61.7425 |
Longitude | -143.8667 |
Nearby scientific data | Find additional scientific data near this location |
Location and accuracy | This occurrence is on the southwest flank of Granite Peak. It is at an elevation of about 6,200 feet, 1,400 feet south-southwest of Granite Peak, and 2,300 feet northeast of the center of section 36, T. 1 S., R. 8 E. of the Copper River Meridian. This is locality 178 of MacKevett (1976) and locality 3 of MacKevett and others (1978). The location is accurate to within about 100 feet. |
Geologic descriptionThis occurrence consists of numerous pyrite- and chalcopyrite-bearing quartz veinlets and sulfide disseminations in Jurassic granodiorite (MacKevett, 1976). Samples of the mineralization contain as much as 0.1 part per million (ppm) gold, 2 ppm silver, 5,000 ppm copper, 70 ppm molybdenum, more than 5,000 ppm barium, and 100 ppm antimony. | |
Geologic map unit | (-143.868793835332, 61.7420403067154) |
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Mineral deposit model | Porphyry Cu (Cox and Singer, 1986; model 17) |
Mineral deposit model number | 17 |
Age of mineralization | Jurassic or younger based on the age of the granodiorite host rock. |
Alteration of deposit | The type of alteration is not specified. |
Workings or exploration | Only limited surface sampling. |
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Indication of production | None |
Additional commentsThe locality is in the Wrangell-Saint Elias National Park and Preserve. |
MRDS Number | A011762 |
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References | |
Reporters | Travis L. Hudson (Applied Geology, Inc.) |
Last report date | 1/12/2003 |