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  3. Alaska Resource Data File (ARDF)

Spring

Occurrence, Probably inactive

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Commodities and mineralogy

Main commodities Sb
Other commodities Au
Ore minerals stibnite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale NM
Quadrangle map, 1:63,360-scale D-1
Latitude 64.784
Longitude -165.177
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Spring antimony occurrence is in upper Rocky Mountain Creek, an east tributary to upper Nome River, at an elevation of 1,150 feet. It is locality 17 of Hummel (1962 [MF 248]) and included in locality 32 of Cobb (1972 [MF 463], 1978 [OFR 78-93]). The prospect is located within about 1,000 feet of the coordinates.

Geologic setting

Geologic description

Hummel (1962 [MF 248]) identified the Spring prospect as an antimony occurrence. The ore mineral is assumed to be stibnite, possibly with quartz and some gold values, that occurs in veins that cross-cut the metasedimentary rocks. The prospect is in, or stratigraphically above, a massive marble intercalated in metasedimentary schist (Hummel, 1962 [MF 248]).
Geologic map unit (-165.179619381837, 64.7832430118497)
Mineral deposit model Antimony-bearing vein? in metasedimentary rocks.
Age of mineralization Probably mid-Cretaceous or younger if a vein occurrence.

Production and reserves

Workings or exploration A surface pit or trench may be present.
Indication of production None

References

References

Cobb, E.H., 1972, Metallic mineral resources map of the Nome quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-463, 2 sheets, scale 1:250,000.
Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Nome quadrangle, Alaska: U.S. Geological Survey Open-File report 78-93, 213 p.
Hummel, C.L., 1962, Preliminary geologic map of the Nome D-1 quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-248, 1 sheet, scale 1:63,360.
Hummel, C.L., 1975, Mineral deposits and occurrences, and associated altered rocks in southwest Seward Peninsula, western Alaska: U.S. Geological Survey Open-File Report 75-2, 1 sheet, scale 1:125,000.
Reporters C.C. Hawley and Travis L. Hudson
Last report date 10/22/1999