Unnamed (near headwaters of Granite Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Pb; Zn
Other commodities Ag; Cu; Sn
Gangue minerals pyrite

Geographic location

Quadrangle map, 1:250,000-scale BN
Quadrangle map, 1:63,360-scale A-2
Latitude 65.19
Longitude -162.59
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 setting

Geologic description

This 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.

Production and reserves

Workings or exploration Prospecting has primarily been on the west side of the Windy Creek stock (see BN094).
Indication of production None