|Quadrangle map, 1:250,000-scale||NM|
|Quadrangle map, 1:63,360-scale||D-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Rocky Mountain Creek is an east tributary to upper Nome River. It is about 2 miles south of Christian Creek (NM073). Tailings extend about one-half mile along Rocky Mountain Creek, beginning just east of the Nome-Taylor road. The location is accurate; the coordinates are the mid-point of the placer tailings. The mine is locality 108 of Cobb (1972 [MF 463], 1978 [OFR 78-93]).|
Geologic descriptionThe lower part of Rocky Mountain Creek was placer mined for gold, probably after WW II. The area was actively prospected for tungsten and other strategic metals during World War II (Coats, 1944), and native gold and small amounts of cassiterite were present with scheelite in heavy mineral concentrates. Rocky Mountain Creek was one of three creeks in the Nome area identified by Anderson (1947) as having notable amounts of cassiterite. Anderson (1947) inferred that the placer cassiterite was derived from the same veins that hosted scheelite. Lode occurrences identified above the placer mine in the Rocky Mountain Creek drainage include the Lindfors (NM080) and Spring (NM078) antimony prospects and the Thomson (NM077) antimony and zinc prospect identified by Hummel (1962 [MF 248]). Coats (1944) reported a narrow vein, mostly composed of quartz and albite but also with about 3 percent scheelite, in Rocky Mountain Creek above the placer. This scheelite occurrence may be locality 34 of Hummel (1962 [MF 248]) near the head of the creek (NM076). Bedrock in the Rocky Mountain Creek drainage is a metasedimentary schist and marble sequence (Hummel, 1962 [MF 248]).
|Geologic map unit||(-165.206318950143, 64.7694423510178)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Holocene.|
|Workings or exploration||Rocky Mountain Creek was worked as a placer mine on a small scale relatively late in the history of the district. It is not mentioned as a placer prospect in reports earlier than World War II.|
|Indication of production||Yes; small|
|MRDS Number||A012813; A012914; D002571|
Anderson, Eskil, 1947, Mineral occurrences other than gold deposits in northwestern Alaska: Alaska Territorial Division of Mines Pamphlet 5-R, 48 p.
Coats, R.R., 1944, Lode scheelite occurrences of the Nome area: U.S. Geological Survey Open-File Report 17, 6 p.
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.
|Reporters||C.C. Hawley and Travis L. Hudson|
|Last report date||10/22/1999|