|Quadrangle map, 1:250,000-scale||BN|
|Quadrangle map, 1:63,360-scale||A-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is on the ridge crest (elevation 1,425 feet) between headwater tributaries of Granite Creek. Granite Creek is the principal drainage in the northwest part of Death Valley.|
Geologic descriptionThis occurrence is in the east part of the Windy Creek stock, a mid-Cretaceous composite pluton of quartz monzonite, monzonite, syenite and some melanite-bearing nepheline syenite (Miller and others, 1971; 1972). Latite and greenish quartz porphyry, both commonly pyritiferous, locally crosscut the alkalic phases of the Windy Creek stock. Two samples of pyritiferous quartz monzonite from this ridge crest have weakly anomalous lead values (150 ppm) and one contains 20 ppm Sn. A pyritiferous aphanitic dike from this ridge contains 150 ppm Cu, 700 ppm Pb, 700 ppm Zn, 15 ppm Sn, and 1 ppm Ag (Miller and others, 1971, Table 2). Molybdenum was detected at low levels in the aphanitic dike but was below detection in the other two samples. This occurrence primarily serves to illustrate that late, cross-cutting phases of the Windy Creek stock are mineralized compared to earlier, pyrite-bearing phases.
|Geologic map unit||(-162.592629398158, 65.1892974648822)|
|Mineral deposit model||Polymetallic sulfide mineralization in quartz monzonite|
|Age of mineralization||Mid-Cretaceous; the Windy Creek stock is inferred to be mid-Cretaceous based on similarities to the Granite Mountain stock to the east in the Candle quadrangle (Miller and others, 1971).|
|Alteration of deposit||One of the samples here is described as oxidized quartz monzonite.|
|Workings or exploration||Prospecting has primarily been on the west side of the Windy Creek stock (see BN094).|
|Indication of production||None|
Miller, T.P., Elliott, R.L., Grybeck, D.J., and Hudson, T.L., 1971, Results of geochemical sampling in the northern Darby Mountains, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 72-211, 12 p.
|Reporters||Travis L. Hudson (Applied Geology)|
|Last report date||3/15/1999|